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Best Knurled Head Bolts - Buying Guide

Last Updated: 01/20/2019

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  #1

ARP 134-3601 1343601 High Performance Series Cylinder Head Hex Bolts

Model: 134-3601   |    Mpn: 1343601   |    Ean: 0672036001742   |    PartNumber: 1343601   |   Asin: B000CFU4PO

ARP 1343601 High Performance Series Cylinder Head Hex Bolts

Features

  • For Use With 23 Degree OEM Cylinder Heads And Most Edelbrock/ LT-AFR/ Brodix -8; -10; -11; -11xb/ LT-1/ Dart Pro -1/ Trick Flow Heads/ Most World Products Heads
  • Hex Style Head Type
  • 180000 Pounds Per Square Inch Tensile Strength
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Item Dimensions: 2.2 x 4.1 x 8.7 inches (5.6 x 10.4 x 22.1 cm)   |   Package Dimensions: 2.3 x 4.2 x 8.8 inches (5.8 x 10.7 x 22.4 cm)

First Available: 2012-06-05

Amazon Price: $72.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $82.69

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  #2

ARP 1354001 Pro Series Cylinder Head Studs With Hex Nuts

Model: 135-4001   |    Mpn: 1354001   |    Ean: 0672036002398   |    PartNumber: 1354001   |   Asin: B000CFO0YK

ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs. Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned -- something that won't happen with inferior quality head studs. By being thread rolled after heat-treat, these studs have about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort. This cylinder head stud kit comes complete with premium quality parallel ground washers and conventional hex style nuts for select Chevrolet big block applications (cast OEM, Aluminum factory heads, also early Bowtie).

Features

  • The choice of many top professional engine builders for their all-out competition powerplants
  • Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware
  • Kit comes complete with premium quality parallel ground washers and traditional hex style nuts
  • 1000% better fatigue strength than many other studs
  • Centerless ground to be as perfectly concentric as possible
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.2 x 4.3 x 8.7 inches (5.6 x 10.9 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $167.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 3-4 business days
List Price: $167.99

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  #3

ARP 114-3601 6-Point Head Bolt Kit

Model: 114-3601   |    Mpn: ARP-114-3601   |    Ean: 0672036000783   |    PartNumber: ARP-114-3601   |   Asin: B001T6JFJ6

AMC, 290-343-390 cid (1969 and earlier) 7/16, ARP 112-3601 Cylinder Head Bolts, High Performance, Hex Head, High Performance head bolts are available with a reduced wrenching hex or 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing.All High Performance Series bolts are 180,000 psi (which is 15% stronger than Grade 8) and kits come complete with hardened parallel-ground washers.PROFESSIONAL SERIES All Pro Series bolts are cold-forged to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP ZERO defect ZERO failure quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings.All Pro Series head bolts have a reduced wrenching hex or 12-point head and wide area flange to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. Most applications have undercut short bolts that can help eliminate head gasket failures through providing more stretch to compensate for the additional compression of gaskets.Head Bolt and Stud Tech Tips

Features

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.36 x 4.13 x 8.66 inches (6.0 x 10.5 x 22.0 cm)

First Available: 2012-10-25

Amazon Price: $76.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1 to 3 months
List Price: $82.54

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  #4

ARP 1543603 High Performance Hex Cylinder Head Bolts

Model: 154-3603   |    Mpn: 1543603   |    Ean: 0672036003715   |    PartNumber: 1543603   |   Asin: B000CFO17G

Arp 154-3603 Sbf Head Bolt Kit 6Pt. Product Dimension (Lxwxh): 4.4X9.05X2.4

Features

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2 x 4.1 x 8.7 inches (5.1 x 10.4 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $75.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $80.10

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  #5

ARP 2474204 Head Stud Kit for Dodge 98-02

Model: 247-4204   |    Mpn: 2474204   |    Ean: 0672036035648   |    PartNumber: 2474204   |   Asin: B003XUH3WW

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned something that won't happen with inferior quality head studs Head Stud Kit Custom Age 625+ Series 12Point Head

Features

Brand: ARP   |   Manufacturer: ARP

Item Dimensions: 11 x 3 x 8 inches (27.9 x 7.6 x 20.3 cm)   |   Package Dimensions: 2.2 x 7.4 x 11 inches (5.6 x 18.8 x 27.9 cm)

First Available: 2012-06-05

Amazon Price: Too low to display | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $1,147.99

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  #6

ARP 134-3703 High Performance Series Cylinder Head Bolts

Model: 134-3703   |    Mpn: 1343703   |    Ean: 0672036001810   |    PartNumber: 1343703   |   Asin: B000CFO0OA

To maintain a reputation for "zero defects", ensure optimum quality control, and produce fasteners of exceptionally high quality, ARP controls all aspects of the manufacturing process, performing all operations in-house where they can be closely monitored. ARP takes extraordinary steps to produce the very finest products of their kind on the market today. These High Performance series cylinder head bolts are a premium replacement for OEM fasteners. They feature a compact 12-point style and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. The bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware, and they come complete with hardened parallel-ground washers. This kit is designed for select Chevrolet small block applications (18 degree standard port with outer row only stainless steel).

Features

  • High Performance Series cylinder head bolts are a premium replacement for OEM fasteners
  • Bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware
  • Wide area flanged head eliminates the need for valve train removal to facilitate cylinder head retorquing
  • Features compact 12-point style heads
  • Comes complete with hardened parallel-ground washers
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.3 x 4.2 x 8.5 inches (5.8 x 10.7 x 21.6 cm)

First Available: 2012-06-05

Amazon Price: $96.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1 to 2 days
List Price: $106.98

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  #7

ARP 2345501 Main Cap Stud Kit

Model: 234-5501   |    Mpn: 2345501   |    Ean: 0672036009489   |    PartNumber: 2345501   |   Asin: B000CFO3G0

There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. The studs are manufactured in their own factory using the best processes, designs, materials, and engineering. Every main stud kit exceeds the most stringent aerospace specifications, and come complete with hardened parallel-ground washers and aerospace quality nuts. The studs are manufactured from 8740 chrome moly steel, and heat-treated to 200,000 psi tensile strength. J-form threads are rolled after heat-treat to create a fastener that has threads 1000% stronger than others. Be aware that, although ARP produces both studs and bolts, they recommend the use of main studs over bolts whenever possible for several key reasons. First is the ability to obtain more accurate torque readings because studs don't "twist" into the block. All clamping forces are on one axis. By the same token, there is less force exerted on the block threads, which contributes to improved block life (which is very critical on aluminum blocks). They also allow for easier engine assembly and proper alignment of caps every time.

Features

  • Main studs are designed to meet the exacting standards and demands of professional engine builders
  • Manufactured from 8740 chrome moly steel
  • Rated at 200,000 PSI, which is considerably stronger than Grade 8 hardware
  • Rolled J-form threads are 1000% stronger than other threads
  • Main studs are recommended over main bolts for a number of reasons, including more accurate torque readings and easier engine assembly
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Item Dimensions: 9 x 3 x 4 inches (22.9 x 7.6 x 10.2 cm)   |   Package Dimensions: 1.8 x 4.2 x 8.7 inches (4.6 x 10.7 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $111.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $117.99

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  #8

ARP 1553601 High Performance Series Cylinder Head Hex Bolts

Model: 155-3601   |    Mpn: 1553601   |    Ean: 0672036004255   |    PartNumber: 1553601   |   Asin: B000CFO1D0

To maintain a reputation for "zero defects", ensure optimum quality control, and produce fasteners of exceptionally high quality, ARP controls all aspects of the manufacturing process, performing all operations in-house where they can be closely monitored. ARP takes extraordinary steps to produce the very finest products of their kind on the market today. These High Performance series cylinder head bolts are a premium replacement for OEM fasteners. They feature a reduced wrenching hex and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. The bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware, and they come complete with hardened parallel-ground washers. This kit is designed for select Ford big block applications (390-428 FE series, Edelbrock head 60069, 60079).

Features

  • High Performance Series cylinder head bolts are a premium replacement for OEM fasteners
  • Bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware
  • Wide area flanged head eliminates the need for valve train removal to facilitate cylinder head retorquing
  • Features reduced wrenching hex style heads
  • Comes complete with hardened parallel-ground washers
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.5 x 4.5 x 9 inches (6.4 x 11.4 x 22.9 cm)

First Available: 2012-06-05

Amazon Price: $79.63 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $79.63

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  #9

ARP 1544005 Pro Series Cylinder Head Studs with Hex Nuts

Model: 154-4005   |    Mpn: 1544005   |    Ean: 0672036003791   |    PartNumber: 1544005   |   Asin: B000CFO19E

ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs. Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned -- something that won't happen with inferior quality head studs. By being thread rolled after heat-treat, these studs have about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort. This cylinder head stud kit comes complete with premium quality parallel ground washers and conventional hex style nuts for select Ford small block applications (289-302 with 351W head, 7/16"-14 cylinder block thread M-6049-J302, SVO high port and M-6049-L302, AFR 185 Edelbrock aluminum, GT-40 style with insert "T" washer).

Features

  • The choice of many top professional engine builders for their all-out competition powerplants
  • Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware
  • Kit comes complete with premium quality parallel ground washers and conventional hex style nuts
  • 1000% better fatigue strength than many other studs
  • Centerless ground to be as perfectly concentric as possible
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.3 x 4.3 x 8.6 inches (5.8 x 10.9 x 21.8 cm)

First Available: 2012-06-05

Amazon Price: $134.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $143.99

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  #10

ARP 154-3701 High Performance Series Cylinder Head 12-Point Bolts

Model: 154-3701   |    Mpn: 1543701   |    Ean: 0672036003739   |    PartNumber: 1543701   |   Asin: B000CFO180

To maintain a reputation for "zero defects", ensure optimum quality control, and produce fasteners of exceptionally high quality, ARP controls all aspects of the manufacturing process, performing all operations in-house where they can be closely monitored. ARP takes extraordinary steps to produce the very finest products of their kind on the market today. These High Performance series cylinder head bolts are a premium replacement for OEM fasteners. They feature a compact 12-point and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. The bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware, and they come complete with hardened parallel-ground washers. This kit is designed for select Ford small block applications (289-302 standard, Edelbrock head 60259, 60379).

Features

  • High Performance Series cylinder head bolts are a premium replacement for OEM fasteners
  • Bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware
  • Wide area flanged head eliminates the need for valve train removal to facilitate cylinder head retorquing
  • Features compact 12-point style heads
  • Comes complete with hardened parallel-ground washers
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.2 x 4.1 x 8.7 inches (5.6 x 10.4 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $50.00 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $50.00

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  #11

Manley 42192 Superior Head Bolt Set

Model: 42192   |    Mpn: 42192   |    Ean: 0807298018379   |    PartNumber: 42192   |   Asin: B000COU7KC

Cylinder Head Bolt Kit1/2 in BoltHex HeadSteelNaturalBig Block Chevy/Brodix/Dart Merlin ll Heads1 HeadKitBB Chevy with Brodix heads, Merlin II Aluminum

Features

Brand: Manley   |   Manufacturer: Manley

Package Dimensions: 1.6 x 4.3 x 6.5 inches (4.1 x 10.9 x 16.5 cm)

Amazon Price: $30.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1 to 2 days
List Price: $33.41

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  #12

ARP 2085404 Main Stud for Acura

Model: 208-5404   |    Mpn: 2085404   |    Ean: 0672036033231   |    PartNumber: 2085404   |   Asin: B002SXJUW6

ARP 2085404 Main Stud for Acura

Features

Brand: ARP   |   Manufacturer: ARP

Item Dimensions: 9 x 3 x 4 inches (22.9 x 7.6 x 10.2 cm)   |   Package Dimensions: 2.2 x 4.1 x 8.7 inches (5.6 x 10.4 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $87.64 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $87.64

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  #13

ARP 2034204 Pro Series Cylinder Head Studs, With 12-Point Style Nuts, For Select Toyota Applications

Model: 203-4204   |    Mpn: 2034204   |    Ean: 0672036007614   |    PartNumber: 2034204   |   Asin: B000CFU6BG

ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs. Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned -- something that won't happen with inferior quality head studs. By being thread rolled after heat-treat, these studs have about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort. This cylinder head stud kit comes complete with premium quality parallel ground washers and compact 12-point style nuts for select Toyota applications (3SGTE).

Features

  • The choice of many top professional engine builders for their all-out competition powerplants
  • Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware
  • Kit comes complete with premium quality parallel ground washers and compact 12-point style nuts
  • 1000% better fatigue strength than many other studs
  • Centerless ground to be as perfectly concentric as possible
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.3 x 4.1 x 8.7 inches (5.8 x 10.4 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $143.12 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $143.12

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  #14

ARP 2543708 Pro Series 12-Point Cylinder Head Bolt Kit

Model: 254-3708   |    Mpn: 2543708   |    Ean: 0672036011116   |    PartNumber: 2543708   |   Asin: B000CFU8DC

Pro Series bolts are cold-forge to ensure molecular integrity, heat-treated prior to thread rolling and machining, and are rated nominally at 200,000 psi. ARP Pro Series head bolt kits are application specific -- designed for use with typically competition only components. These fasteners deliver superior strength and meet the ARP "zero defect -- zero failure" quality standard. Hardened and parallel-ground washers are included with each kit to ensure even load distribution and accurate torque readings. They feature reduced wrenching 12-point heads and wide area flanges to eliminate the need for valve train removal for cylinder head retorquing and permits the use of larger diameter valve springs. This kit is for select Ford small block applications (302 with Windsor heads 1/2" - 7/16" stepped bolt, 1/2" - 7/16").

Features

  • Professional Series cylinder head bolts are premium fasteners for competition components
  • Rated nominally at 200,000 psi, which is substantially stronger than Grade 8 hardware
  • Wide area flanged head eliminates the need for valve train removal to facilitate cylinder head retorquing
  • Features reduced wrenching 12-point style heads
  • Comes complete with hardened parallel-ground washers
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Item Dimensions: 9 x 3 x 4 inches (22.9 x 7.6 x 10.2 cm)   |   Package Dimensions: 2.2 x 4.2 x 8.7 inches (5.6 x 10.7 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $135.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $158.99 | Used Price: $59.29

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  #15

Edelbrock 8553 Head Bolt Kit

Model: 8553   |    Mpn: 8553   |    Ean: 0085347085538   |    PartNumber: 8553   |   Asin: B000CSP33Y

The Edelbrock Head Bolt Kits include the complete set of head bolts and hardened washers. They are cold rolled and heat-treated before thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal when re-torquing cylinder heads.

Features

  • Includes the complete set of head bolts and hardened washers
  • Cold rolled and heat-treated before thread rolled and machining
  • Bolts are rated at 170,000 pounds per square inch (psi)
  • Reduced diameter bolt heads eliminate the need for valve train removal
  • See more on Amazon...

Brand: Edelbrock   |   Manufacturer: Edelbrock

Package Dimensions: 2.3 x 4.1 x 8.7 inches (5.8 x 10.4 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $140.65 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1 to 2 days
List Price: $140.65

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  #16

ARP 254-4503 6-Point Head Stud Kit for Small Block Ford

Model: 254-4503   |    Mpn: ARP-254-4503   |    Ean: 0672036011321   |    PartNumber: ARP-254-4503   |   Asin: B0066TCOMQ

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to "aircraft" quality. Then, each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best. Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned - something that won't happen with inferior quality head studs. ARP studs are thread rolled after heat-treat, which gives them about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort. You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the "stretch" of both studs, which makes for a more consistent clamping force - and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing! Premium quality

Features

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.5 x 4.5 x 9 inches (6.4 x 11.4 x 22.9 cm)

First Available: 2012-10-25

Amazon Price: $170.84 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1 to 3 months
List Price: $170.84

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  #17

Edelbrock 8554 Head Bolt Kit

Model: 8554   |    Mpn: 8554   |    Ean: 0085347085545   |    PartNumber: 8554   |   Asin: B000CSWM24

Edelbrock Head Bolt Kits include the complete set of head bolts and hardened washers. They are cold rolled and heat-treated before thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal when re-torquing cylinder heads.

Features

  • Includes the complete set of head bolts and hardened washers
  • Cold rolled and heat-treated before thread rolled and machining
  • Bolts are rated at 170,000 pounds per square inch (psi)
  • Reduced diameter bolt heads eliminate the need for valve train removal
  • See more on Amazon...

Brand: Edelbrock   |   Manufacturer: Edelbrock

Package Dimensions: 2.1 x 4 x 8.5 inches (5.3 x 10.2 x 21.6 cm)

First Available: 2012-06-05

Amazon Price: $261.05 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $261.05

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  #18

Edelbrock 8557 Head Bolt Kit

Model: 8557   |    Mpn: 8557   |    Ean: 0085347085576   |    PartNumber: 8557   |   Asin: B000CSSNW2

The Edelbrock Head Bolt Kits include the complete set of head bolts and hardened washers. They are cold rolled and heat-treated before thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal when re-torquing cylinder heads.

Features

  • Includes the complete set of head bolts and hardened washers
  • Cold rolled and heat-treated before thread rolled and machining
  • Bolts are rated at 170,000 pounds per square inch (psi)
  • Reduced diameter bolt heads eliminate the need for valve train removal
  • See more on Amazon...

Brand: Edelbrock   |   Manufacturer: Edelbrock

Package Dimensions: 2.2 x 4.2 x 8.7 inches (5.6 x 10.7 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $135.16 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $140.65

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  #19

ARP 1454006 Pro Series Cylinder Head Studs with Hex Nuts

Model: 145-4006   |    Mpn: 1454006   |    Ean: 0672036002985   |    PartNumber: 1454006   |   Asin: B000CFO158

ARP uses a premium grade 8740 alloy, which is rated far superior to "aircraft" quality, for their Pro Series cylinder head studs. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi to ensure complete heat penetration. Then the studs are centerless ground to make them as close to perfectly concentric as possible, unlike lesser quality studs. Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned -- something that won't happen with inferior quality head studs. By being thread rolled after heat-treat, these studs have about 1000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort. This cylinder head stud kit comes complete with premium quality parallel ground washers and conventional hex style nuts for select Chrysler big block applications (Mopar B, RB and 413-426 Wedge, Edelbrock RPM).

Features

  • The choice of many top professional engine builders for their all-out competition powerplants
  • Manufactured from a premium grade 8740 alloy that is heat-treated to 200,000 psi, which is considerably stronger than Grade 8 hardware
  • Kit comes complete with premium quality parallel ground washers and conventional hex style nuts
  • 1000% better fatigue strength than many other studs
  • Centerless ground to be as perfectly concentric as possible
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.3 x 4.3 x 8.6 inches (5.8 x 10.9 x 21.8 cm)

First Available: 2012-06-05

Amazon Price: $174.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 24 hours
List Price: $182.97

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  #20

ARP 1443602 High Performance Series Hex Cylinder Head Bolts

Model: 144-3602   |    Mpn: 1443602   |    Ean: 0672036002800   |    PartNumber: 1443602   |   Asin: B000CFS0R8

To maintain a reputation for "zero defects", ensure optimum quality control, and produce fasteners of exceptionally high quality, ARP controls all aspects of the manufacturing process, performing all operations in-house where they can be closely monitored. ARP takes extraordinary steps to produce the very finest products of their kind on the market today. These High Performance series cylinder head bolts are a premium replacement for OEM fasteners. They feature a reduced wrenching hex and wide area flanged head that eliminates the need for valve train removal to facilitate cylinder head retorquing. The bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware, and they come complete with hardened parallel-ground washers. This kit is designed for select Chrysler small block applications ("A" engine, 273-360 cid).

Features

  • High Performance Series cylinder head bolts are a premium replacement for OEM fasteners
  • Bolts are 180,000 psi, which is 15% stronger than Grade 8 hardware
  • Wide area flanged head eliminates the need for valve train removal to facilitate cylinder head retorquing
  • Features reduced wrenching hex style heads
  • Comes complete with hardened parallel-ground washers
  • See more on Amazon...

Brand: ARP   |   Manufacturer: ARP

Package Dimensions: 2.28 x 4.21 x 8.7 inches (5.8 x 10.7 x 22.1 cm)

First Available: 2012-06-05

Amazon Price: $74.99 | as of 01/20/2019(10:58pm pst)
Availibility: Usually ships in 1-2 business days
List Price: $77.46

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