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Best Spark Plugs - Buying Guide

Last Updated: 01/20/2019

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  #1

ACDelco 41-993 Professional Iridium Spark Plug (Pack of 8)

Model: 41-993   |    Mpn: 41-993   |    Ean: 0707773652930   |    PartNumber: 41-993   |   Asin: B075XWYMYD

ACDelco Professional Iridium Spark Plugs are the high quality replacement ideal for many vehicles on the road today. They are the latest in spark plug technology and an exact replacement for your vehicle's original components. Iridium composition has the highest melting point and strength of all metals. It provides the greatest wear resistance and durability over Platinum and Conventional spark plugs. ACDelco Professional Iridium Spark Plugs provide the best wear resistance and durability of any spark plug. These premium aftermarket replacement iridium spark plugs are manufactured to meet your expectations for fit, form and function.

Features

  • Iridium offers better engine idle stability and smoother performance
  • Iridium allows for smaller, more efficient electrode designs for improved cold starting and quicker acceleration
  • Iridium fine-wire electrode helps improve ignition of the fuel and burns away carbon deposits on the tip of the plug as they form, to help improve fuel economy
  • One piece suppressor seal blocks radio frequencies that can affect vehicle electronics
  • Suppressor seal meters spark energy for longer electrode life and seals against combustion leakage
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Brand: ACDelco   |   Manufacturer: ACDelco

Package Dimensions: 0.9 x 3.4 x 6.4 inches (2.3 x 8.6 x 16.3 cm)

First Available: 2017-09-25

Amazon Price: $30.25 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $30.25

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  #2

NGK (6546) DCPR8EIX Iridium IX Spark Plug, Pack of 1

Model: DCPR8EIX   |    Mpn: DCPR8EIX   |    Ean: 5053557112950   |    PartNumber: DCPR8EIX   |   Asin: B000CJ8CZY

Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling. The 0.6mm laser welded fine iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect. Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage. Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high-performance engines. Trivalent metal plating has superior anti-corrosion and anti-seizing properties.

Features

  • Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling
  • The 0.6mm laser welded fine Iridium tip ensures high durability and a consistently stable spark and the tapered ground electrode minimizes electrical quenching effect
  • Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage
  • Iridium alloy has extremely high melting point, giving it high durability to heat and electrical wear, perfect for today's high-performance engines
  • Trivalent metal plating has superior anti-corrosion and anti-seizing properties
  • See more on Amazon...

Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 2.08 x 2.24 x 4.35 inches (5.3 x 5.7 x 11.0 cm)   |   Package Dimensions: 0.8 x 1 x 3.3 inches (2.0 x 2.5 x 8.4 cm)

Amazon Price: $7.92 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $9.09

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  #3

Denso (3297) SK20R11 Iridium Spark Plug, Pack of 1

Model: SK20R11   |    Mpn: 3297   |    Ean: 7355117378119   |    PartNumber: 3297   |   Asin: B0012Q4IPY

Denso Iridium Spark Plug Iridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Because of the strength and hardness of iridium, there is virtually no electrode wear. This combined with a platinum ground electrode, creates a spark plug that is almost impervious to wear even under extreme driving or racing conditions. Technical Specifications - Extra Long Life Iridium Plug, 14mm Thread, 19mm (3/4") Reach, 5/8" (16mm) Hex Size, Gasket Seat, Resistor, Solid Terminal, 0.7mm Fine Wire Iridium-Tipped Center Electrode, Platinum Tipped Ground Electrode, .044" (1.1mm) Gap

Features

  • SK20R11
  • Excellent acceleration and performance
  • Stable combustion during idling
  • Long life and high reliability
  • Features iridium with high melting point
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Brand: Denso   |   Manufacturer: DENSO

Package Dimensions: 0.8 x 1 x 3.2 inches (2.0 x 2.5 x 8.1 cm)

Amazon Price: $6.00 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $7.07

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  #4

NGK (6502) IFR5L-11 Laser Iridium Spark Plug, Pack of 1

Model: IFR5L-11   |    Mpn: IFR5L-11   |    Ean: 5053557108328   |    PartNumber: IFR5L-11   |   Asin: B001RLS1SE

NGK Spark Plugs are designed to operate over a much wider heat range than ordinary plugs. They resist carbon buildup and pre-ignition. Each features high alumina ceramics for better heat transfer and electrical insulation. A patented triple gasket sealing process eliminates the possibility of combustion gas leakage, and a longer insulator nose prevents fouling and misfiring. A solid copper core and its nickel tipped electrode provide a longer plus life.

Features

  • Designed to operate over a much wider heat range than ordinary plugs
  • Resists carbon buildup and pre-ignition
  • High alumina ceramics for better heat transfer and electrical insulation
  • Solid copper core and nickel tipped electrode provide a longer plus life
  • Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
  • Laser welded Iridium center electrode tip ensures high durability and greater spark
  • Platinum disc welded to backside of ground electrode provides long life
  • Longer insulator nose prevents fouling, the corrugated ribs on insulator prevents flashover, and a triple gasket seal eliminates combustion gas leakage
  • Faster starts and quicker acceleration
  • Better fuel economy and lower emissions, trivalent metal plating for superior anti-corrosion and anti-seizing
  • See more on Amazon...

Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 1.26 x 0.39 x 0.35 inches (3.2 x 1.0 x 0.9 cm)   |   Package Dimensions: 0.9 x 1 x 3.2 inches (2.3 x 2.5 x 8.1 cm)

Amazon Price: $12.23 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $13.79

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  #5

NGK (7548) BR9EYA V-Power Spark Plug, Pack of 1

Model: BR9EYA   |    Mpn: BR9EYA   |    Ean: 5053557114916   |    PartNumber: BR9EYA   |   Asin: B000BQK6KW

Stens 130-100 NGK BR9EYA Spark Plug

Features

  • Designed to operate over a much wider heat range than ordinary plugs
  • Resists carbon buildup and pre-ignition
  • High alumina ceramics for better heat transfer and electrical insulation
  • Solid copper core and nickel tipped electrode provide a longer plus life
  • Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
  • 45 degree V-Power center electrode increases anti-fouling characteristics and performance
  • Increased fuel economy and lower emissions
  • Lowers ignition system voltage requirements
  • Greater ignitability and performance over conventional spark plugs
  • Trivalent metal plating has superior anti-corrosion and anti-seizing properties
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Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 8.27 x 9.45 x 33.07 inches (21.0 x 24.0 x 84.0 cm)   |   Package Dimensions: 0.8 x 1 x 3.3 inches (2.0 x 2.5 x 8.4 cm)

Amazon Price: $1.99 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $5.03

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  #6

NGK (6578) BPR4ES SOLID Standard Spark Plug, Pack of 1

Model: BPR4ES   |    Mpn: BPR4ES   |    Ean: 0087295165782   |    PartNumber: BPR4ES   |   Asin: B001RMC3Y6

Ngk traditional spark plug is manufactured to enhance the performance of the vehicle. It is constructed from durable material that is corrosion & abrasion resistant. The spark plug insulators are made of 99% pure alumina silicate, allowing for longer insulator noses for reduced fouling. This spark plug features a triple gasket sealing process that eliminates fuel leakage. It also includes a solid copper core that provides superior heat dissipation & conductivity. This spark plug has resistor that is produced with a glass & carbon mixture, which is fired to ensure superior performance & durability. It has corrugated ribs that prevent flash over & cold rolled threads to inhibit damage to the cylinder head

Features

Brand: NGK   |   Manufacturer: NGK

Package Dimensions: 0.8 x 1 x 3.2 inches (2.0 x 2.5 x 8.1 cm)

Amazon Price: $3.15 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $3.81

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  #7

NGK 6240 PLFR5A-11 Laser Platinum Spark Plug

Model: 6240   |    Mpn: 6240   |    Ean: 0087295062401   |    PartNumber: 6240   |   Asin: B000BYERBI

NGK Laser Platinum Spark Plugs are engineered to offer excellent fuel ignition and enhanced throttle response. They are built to OEM specifications and feature trivalent metal plating which provide long lasting durability and protection against anti-seizing. These spark plugs include a laser welded platinum center electrode tip offering faster starts and quicker acceleration. They feature a platinum disc welded behind the ground electrode providing enhanced fuel economy and reduced emissions.

Features

  • Trivalent Metal Plating Provides Superior Anti-Corrosion and Anti-Seizing Properties
  • Corrugated Ribs Prevent Flashover
  • Pure Alumina Silicate Ceramic Insulator, Provides Superior Strength and Better Heat Transfer
  • Copper Core Aids in Heat Removal
  • Triple Seals Prevent Leakage; Torque Specs: Cast Iron: 18-25.3 lb. ft; Overall Height : height of the spark plug from the seat to the top of the terminal nut is 50.5mm (1.98-inch)
  • You can depend on NGK for quality and reliability
  • Features trivalent metal plating which provide long lasting durability
  • Includes laser welded platinum center electrode tip offering faster starts and quicker acceleration
  • Equipped with platinum disc welded behind the ground electrode
  • Better fuel economy and reduced emissions
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Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 2.08 x 2.24 x 4.35 inches (5.3 x 5.7 x 11.0 cm)   |   Package Dimensions: 0.8 x 1.1 x 3.8 inches (2.0 x 2.8 x 9.7 cm)

Amazon Price: $8.57 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $11.23

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  #8

NGK (5531) DPR6EA-9 Standard Spark Plug, Pack of 1

Model: 5531   |    Mpn: 5531   |    Ean: 0087295055311   |    PartNumber: 5531   |   Asin: B000XBGUZ0

NGK Spark Plugs are designed to operate over a much wider heat range than ordinary plugs. They resist carbon buildup and pre-ignition. Each features high alumina ceramics for better heat transfer and electrical insulation. A patented triple gasket sealing process eliminates the possibility of combustion gas leakage, and a longer insulator nose prevents fouling and misfiring. A solid copper core and its nickel tipped electrode provide a longer plus life.

Features

  • Designed to operate over a much wider heat range than ordinary plugs
  • Resists carbon buildup and pre-ignition
  • High alumina ceramics for better heat transfer and electrical insulation
  • Solid copper core and nickel tipped electrode provide a longer plus life
  • Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
  • See more on Amazon...

Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 1.14 x 0.35 x 0.28 inches (2.9 x 0.9 x 0.7 cm)   |   Package Dimensions: 0.7 x 0.9 x 2.9 inches (1.8 x 2.3 x 7.4 cm)

First Available: 2016-02-02

Amazon Price: $0.39 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $3.81 | Used Price: $5.95

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  #9

NGK 54058 Spark Plug Wire Set

Model: EUX065   |    Mpn: 54058   |    Ean: 0087295540589   |    PartNumber: 54058   |   Asin: B001RM7WKQ

NGK Wire Set: 7mm ultra-low resistance magnetic core, wire wound ignition cable with OEM or better specified spark plug and distributor boots. High temp silicone jacket resists underhood temperatures up to 482 degrees F. High density, premium fiberglass braiding reinforcement over EPDM / silicone inner insulation for superior dielectric strength and excellent cable tensile strength. NGK wire sets are built to meet stringent OEM tolerances for a variety of vehicles. They utilize a construction method known as variable pitch wire winding to create resistance to radio frequency interference. The variable pitch winding provides suppression throughout a very wide range by scrambling and breaking up the electrical waves radiated by the firing of the spark plugs. NGK wire sets provide superior firing and fuel savings, outstanding durability, excellent noise suppression, and consistent performance. NGK is the Ignition Specialist with more OE expertise globally than any other brand. With over 80 years of automotive experience, NGK s family of automotive products are driven by extreme dedication to innovation, performance and quality. NGK s premium ignition products are manufactured to the highest durability and operational performance to meet OE standards. The Ignition Specialist full-line product offering includes: spark plugs, glow plugs, ignition coils, coil-on-plug boots and wire sets. With state-of-the-art manufacturing, inventory and distribution facilities in North America and globally, NGK is dedicated to providing customers with world-class products and services. NGK s OE legacy, unsurpassed quality and leading vehicles in operation coverage reinforces NGK as The Ignition Specialist offering quality replacement parts for domestic and import vehicles.

Features

  • Set includes 4 wires (Coil Lead N/R)
  • Variable pitch winding delivers ultra-low resistance, a powerful spark and outstanding EMI/RFI noise suppression
  • Numbered for easy cylinder identification and coil wires are color coded for correct and easy installation
  • Positive-locking, corrosion-resistant stainless steel terminal ends for tight fit and maximum resistance to vibration and separation
  • High-temp (250 + C / 482 + F) silicone outer jacket resists moisture, oil/petrol and cracking due to temperature extremes
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Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 2.1 x 6.2 x 8.1 inches (5.3 x 15.7 x 20.6 cm)   |   Package Dimensions: 2.1 x 6.2 x 8.1 inches (5.3 x 15.7 x 20.6 cm)

Amazon Price: $21.37 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 2-3 business days
List Price: $36.69

Warranty: Limited Lifetime

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  #10

NGK (3901) CPR7EA-9 Standard Spark Plug, Pack of 1

Model: CPR7EA-9   |    Mpn: CPR7EA-9   |    Ean: 0087295139011   |    PartNumber: CPR7EA-9   |   Asin: B001RM4R86

NGK Standard Spark Plug is manufactured to enhance the performance of the vehicle. It is constructed from durable material that is corrosion and abrasion resistant. The spark plug insulators are made of 99 percent pure alumina silicate, allowing for longer insulator noses for reduced fouling. This spark plug features a triple gasket sealing process that eliminates fuel leakage. It also includes a solid copper core that provides superior heat dissipation and conductivity. This spark plug has resistor that is produced with a glass and carbon mixture, which is fired to ensure superior performance and durability. It has corrugated ribs that prevent flashover and cold rolled threads to inhibit damage to the cylinder head.

Features

  • Solid copper core for greater spark
  • Longer insulator nose prevents fouling
  • Corrugated ribs on insulator prevents flashover
  • Zinc dipped shell prevents corrosion
  • Triple gasket seal eliminates combustion gas leakage
  • See more on Amazon...

Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 1.24 x 0.34 x 0.22 inches (3.1 x 0.9 x 0.6 cm)   |   Package Dimensions: 0.55 x 0.87 x 3.15 inches (1.4 x 2.2 x 8.0 cm)

Amazon Price: $2.93 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $5.49

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  #11

NGK (3764) BKR6EIX-11 Iridium IX Spark Plug, Pack of 1

Model: BKR6EIX-11   |    Mpn: BKR6EIX-11   |    Ean: 5054000741079   |    PartNumber: BKR6EIX-11   |   Asin: B000BYGK0E

NGK Iridium IX Spark Plug is designed to offer extreme ignitability, improved throttle response and superior anti fouling capacity. It is constructed from durable material that is corrosion and abrasion resistant. This Spark plug features a fine iridium tip that ensures high durability. It ensures longevity and can easily be installed.

Features

  • You can depend on NGK for quality and reliability
  • Constructed from durable material
  • Fine Iridium tip ensures high durability
  • Features superior anti-corrosion and anti-seizing properties
  • Iridium alloy has extremely high melting point, perfect for today's high-tech, high-performance engines
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Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 2.08 x 2.24 x 4.35 inches (5.3 x 5.7 x 11.0 cm)   |   Package Dimensions: 0.87 x 0.94 x 3.23 inches (2.2 x 2.4 x 8.2 cm)

Amazon Price: $6.50 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $13.31

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  #12

Denso (5346) IKH24 Iridium Power Spark Plug, (Pack of 1)

Model: IKH24   |    Mpn: 5346   |    Ean: 5053557044978   |    PartNumber: 5346   |   Asin: B000M6WPXM

Increased performance with World's smallest Iridium Center Electrode (0.4mm). To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to increase, which has the opposite effect. Iridium Power uses DENSO's patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage.

Features

  • 0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potential
  • U-groove and taper cut ground electrode: provides faster spark flame growth and lessens heat quenching
  • DENSO patented 360 degree laser welding process: ensuring exceptional quality bond and structural strength with the iridium center electrode
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Brand: Denso   |   Manufacturer: Denso

Package Dimensions: 1 x 1 x 3.3 inches (2.5 x 2.5 x 8.4 cm)

Amazon Price: $7.41 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $9.35

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  #13

NGK (3108) DPR6EB-9 Standard Spark Plug, Pack of 1

Model: DPR6EB-9   |    Mpn: DPR6EB-9   |    Ean: 5053557112752   |    PartNumber: DPR6EB-9   |   Asin: B001RM8AFC

NGK Spark Plugs are designed to operate over a much wider heat range than ordinary plugs. They resist carbon buildup and pre-ignition. Each features high alumina ceramics for better heat transfer and electrical insulation. A patented triple gasket sealing process eliminates the possibility of combustion gas leakage, and a longer insulator nose prevents fouling and misfiring. A solid copper core and its nickel tipped electrode provide a longer plus life.

Features

  • Designed to operate over a much wider heat range than ordinary plugs
  • Resists carbon buildup and pre-ignition
  • High alumina ceramics for better heat transfer and electrical insulation
  • Solid copper core and nickel tipped electrode provide a longer plus life
  • Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
  • Solid copper core for greater spark
  • Longer insulator nose prevents fouling
  • Corrugated ribs on insulator prevents flashover
  • Zinc dipped shell prevents corrosion
  • Triple gasket seal eliminates combustion gas leakage
  • See more on Amazon...

Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 1.18 x 0.35 x 0.28 inches (3.0 x 0.9 x 0.7 cm)   |   Package Dimensions: 0.7 x 0.9 x 3 inches (1.8 x 2.3 x 7.6 cm)

Amazon Price: $2.04 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $2.60

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  #14

ACCEL 8199 U-Groove Spark Plug - 8 Pack of #0576S

Model: ACC 8199   |    Mpn: ACC 8199   |    Ean: 0042511181991   |    PartNumber: ACC 8199   |   Asin: B000BWAGOW

ACCEL's "Shorty" spark plugs keep your spark plug boots from being burned and your headers from being dented if you don't have enough room between your plug boots and your exhaust manifold or headers. Designed for trouble-free installation and removal in cramped spaces, these high-performance plugs are much easier than OE plugs to get a socket on but still deliver a larger, hotter, fuller flash front and significantly more power at high rpm. You'll have instant throttle response and better fuel economy with less fouling, flame dissipation, and misfire. These copper-core plugs provide increased thermal conductivity, come with machine-rolled 14mm threads to protect your heads, use a standard 5/8 socket, and come in a pack of eight.

Features

  • Ideal for use in cramped spaces
  • Deliver significantly more power at high RPM
  • Instant throttle response and better fuel economy
  • Less fouling flame dissipation and misfire
  • Pack of eight
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Brand: ACCEL   |   Manufacturer: ACCEL

Item Dimensions: 1.1 x 3.7 x 9.4 inches (2.8 x 9.4 x 23.9 cm)   |   Package Dimensions: 1.1 x 3.6 x 9.4 inches (2.8 x 9.1 x 23.9 cm)

First Available: 2005-10-28

Amazon Price: $30.57 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $32.43

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  #15

Denso (3426) FK20HR-11 Iridium Long Life Spark Plug, Pack of 1

Model: FK20HR-11   |    Mpn: 3426   |    Ean: 0826732325781   |    PartNumber: 3426   |   Asin: B002FOF1QW

Iridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Because of the strength and hardness of iridium, there is virtually no electrode wear. This combined with a platinum tipped ground electrode, creates a spark plug that is almost impervious to wear even under extreme driving or racing conditions. Dual needle design offers better fuel economy, idle stability, lower emissions and improved performance.

Features

  • Denso # 3426
  • Extra Long Life Iridium Plug
  • 0.5 mm Fine Wire Iridium Center Electrode
  • 0.7 mm Platinum Needle Tipped Ground Electrode
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Brand: Denso   |   Manufacturer: DENSO

Package Dimensions: 0.79 x 1.1 x 3.78 inches (2.0 x 2.8 x 9.6 cm)

Amazon Price: $9.00 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $22.95

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  #16

NGK (4268) GR45 V-Power Spark Plug, Pack of 1

Model: GR45   |    Mpn: GR45   |    Ean: 0087295142684   |    PartNumber: GR45   |   Asin: B000COTNFM

NGK V-Power Spark Plug is designed to improve ignitability even in lean burn conditions and the performance of the vehicle. It is constructed from durable material that is corrosion and abrasion resistant. This Spark plug is highly durable against electrical and chemical wear. It features increased fuel economy and lower emissions. This Spark plug lowers ignition system voltage requirements and ensures longevity.

Features

  • You can depend on NGK for quality and reliability
  • Built to OEM specifications
  • Features trivalent metal plating which offers long lasting durability
  • Increases fuel economy and lowers emissions
  • Corrosion resistant
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Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 2.08 x 2.24 x 4.35 inches (5.3 x 5.7 x 11.0 cm)   |   Package Dimensions: 1 x 1 x 3.4 inches (2.5 x 2.5 x 8.6 cm)

Amazon Price: $1.32 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $1.58

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  #17

Bosch 7402 Copper with Nickel Spark Plug (Pack of 1)

Model: 7402   |    Mpn: 7402   |    Ean: 3165143526989   |    PartNumber: 7402   |   Asin: B002PCFYN4

Bosch Copper with Nickel spark plugs feature a heavy-duty yttrium-enhanced copper core center electrode for improved durability

Features

  • Tapered, v-profile nickel chromium ground electrode for improved cold starts and fuel ignitability
  • Heavy-duty, yttrium enhanced copper core center electrode for reliability and performance
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Brand: Bosch   |   Manufacturer: Bosch

Item Dimensions: 3.07 x 5.51 x 9.35 inches (7.8 x 14.0 x 23.7 cm)   |   Package Dimensions: 0.8 x 1 x 3.3 inches (2.0 x 2.5 x 8.4 cm)

First Available: 2018-01-31

Amazon Price: $3.02 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $3.85

Warranty: 1 Year

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  #18

NGK (6700) RE7C-L Laser Iridium Spark Plug, Pack of 1

Model: RE7C-L   |    Mpn: RE7C-L   |    Ean: 0087295167007   |    PartNumber: RE7C-L   |   Asin: B000GZEU64

Laser Iridium Spark Plugs provide superior ignitability and long service life. Smallest tip diameter available iridium/platinum surfaces ensure slow wear rate providing stable idle, superior anti fouling, improved fuel efficiency and lower emissions. Laser welded Iridium center electrode tip ensures high durability and greater spark. Platinum disc welded to backside of ground electrode provides long life. Longer insulator nose prevents fouling, corrugated ribs on insulator prevents flashover, and the triple gasket seal eliminates combustion gas leakage. Faster starts and quicker acceleration. Better fuel economy and lower emissions, trivalent metal plating for superior anti-corrosion and anti-seizing.

Features

  • Laser welded iridium center electrode tip ensures high durability and greater spark
  • Platinum disc welded to backside of ground electrode provides long life
  • Longer insulator nose prevents fouling, corrugated ribs on insulator prevents flashover, and the triple gasket seal eliminates combustion gas leakage
  • Faster starts and quicker acceleration
  • Better fuel economy and lower emissions, trivalent metal plating for superior anti-corrosion and anti-seizing
  • See more on Amazon...

Brand: NGK   |   Manufacturer: NGK

Package Dimensions: 0.7 x 1 x 3.6 inches (1.8 x 2.5 x 9.1 cm)

First Available: 2013-09-12

Amazon Price: $13.70 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $16.93

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  #19

Denso (5340) ITV22 Iridium Power Spark Plug, (Pack of 1)

Model: ITV22   |    Mpn: ITV22   |    Ean: 0042511053403   |    PartNumber: ITV22   |   Asin: B000CJ04AK

Increased performance with World's smallest Iridium Center Electrode (0.4mm). To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to increase, which has the opposite effect. Iridium Power uses DENSO's patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage.

Features

  • 0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potential
  • U-groove and taper cut ground electrode: provides faster spark flame growth and lessens heat quenching
  • DENSO patented 360 degree laser welding process: ensuring exceptional quality bond and structural strength with the iridium center electrode
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Brand: Denso   |   Manufacturer: Denso

Item Dimensions: 1 x 1 x 3.4 inches (2.5 x 2.5 x 8.6 cm)   |   Package Dimensions: 1 x 1 x 3.4 inches (2.5 x 2.5 x 8.6 cm)

Amazon Price: $7.27 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $8.58 | Used Price: $3.21

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  #20

Denso 3419 Spark Plug

Model: 3419   |    Mpn: 3419   |    Ean: 0042511034198   |    PartNumber: 3419   |   Asin: B002FOF1L2

Iridium plugs have an extremely long life as Iridium is 6x harder and 8x stronger than platinum. Because of the strength and hardness of iridium, there is virtually no electrode wear. This combined with a platinum ground electrode, creates a spark plug that is almost impervious to wear even under extreme driving or racing conditions.

Features

  • Denso # 3419
  • Extra Long Life Iridium Plug
  • 0.7mm Fine Wire Iridium-Tipped Center Electrode
  • Platinum Tipped Ground Electrode
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Brand: Denso   |   Manufacturer: Denso

Package Dimensions: 0.8 x 1 x 3.1 inches (2.0 x 2.5 x 7.9 cm)

First Available: 2012-09-10

Amazon Price: $9.29 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $10.05

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  #21

NGK (4656) R7438-9 Racing Spark Plug, Pack of 1

Model: R7438-9   |    Mpn: R7438-9   |    Ean: 0087295146569   |    PartNumber: R7438-9   |   Asin: B002FUTBE4

NGK Fine Wire Racing Plugs are designed to give you a stronger spark from your existing ignition system. Slightly recessed fine wire iridium center electrode requires less voltage to ionize (jump) the plug gap. This allows a stronger spark which will better ignite the air fuel mixture leading to more power.

Features

  • You can depend on NGK for quality and reliability
  • Requires less voltage to ionize the plug gap
  • Fine wire iridium center electrode
  • Platinum tipped ground electrode
  • Allows a stronger spark
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Brand: NGK   |   Manufacturer: NGK

Item Dimensions: 1.46 x 0.39 x 0.31 inches (3.7 x 1.0 x 0.8 cm)   |   Package Dimensions: 0.8 x 1 x 3.7 inches (2.0 x 2.5 x 9.4 cm)

Amazon Price: $29.99 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $39.98

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  #22

ACCEL 0526-4 Copper Core Spark Plug, (Pack of 4)

Model: 0526-4   |    Mpn: 0526-4   |    Ean: 0743047113158   |    PartNumber: 0526-4   |   Asin: B007RVTBV4

ACCEL spark plugs are engineered to create a considerably hotter spark that lets the flame expand more rapidly in the combustion chamber and creates a more complete and efficient burn of the air/fuel mixture. They build significantly more power at high rpm, reduce fouling and misfire, minimize flame dissipation, and give you instant throttle response and noticeably better fuel economy. Redesigned to reflect advancements in cylinder head and fuel management technology, these copper-core plugs with conventional ground electrodes also provide increased thermal conductivity and come with machine-rolled 14mm threads to protect your cylinder heads.

Features

  • Considerably hotter spark creates a more efficient burn of the air fuel mixture in the combustion chamber
  • Significantly more power at high RPM with less fouling misfire and flame dissipation
  • Redesigned to reflect advancements in cylinder head and fuel management technology
  • Instant throttle response and noticeably better fuel economy
  • Machine rolled 14MM threads protect your cylinder heads
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Brand: ACCEL   |   Manufacturer: ACCEL

Item Dimensions: 4.9 x 3.6 x 0.9 inches (12.4 x 9.1 x 2.3 cm)   |   Package Dimensions: 1.1 x 3.6 x 3.9 inches (2.8 x 9.1 x 9.9 cm)

First Available: 2012-03-22

Amazon Price: $13.99 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 24 hours
List Price: $13.99 | Used Price: $11.04

Warranty: 90 Days

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  #23

Denso (5368) IUH24 Iridium Power Spark Plug, (Pack of 1)

Model: IUH24   |    Mpn: 5368   |    Ean: 4520616568085   |    PartNumber: 5368   |   Asin: B000M6SS92

Increased performance with World's smallest Iridium Center Electrode (0.4mm). To increase ignitability, the important point is to let the flame kernel produced by the spark to grow unobstructed. Normally, this can be accomplished by widening the spark gap. However, this causes spark voltage to increase, which has the opposite effect. Iridium Power uses DENSO's patented U-Groove ground electrode to achieve maximum ignitability while minimizing required voltage.

Features

  • 0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potential
  • U-groove and taper cut ground electrode: provides faster spark flame growth and lessens heat quenching
  • DENSO patented 360 degree laser welding process: ensuring exceptional quality bond and structural strength with the iridium center electrode
  • See more on Amazon...

Brand: Denso   |   Manufacturer: Denso

Package Dimensions: 1 x 1 x 3.3 inches (2.5 x 2.5 x 8.4 cm)

Amazon Price: $6.82 | as of 01/20/2019(11:14pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $9.32

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