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ARP Hex Head Stud Kit | Ford Modular 4.6L 2-Valve & 4-Valve Engines (256-4001)

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ARP

ARP Hex Head Stud Kit | Ford Modular 4.6L 2-Valve & 4-Valve Engines

PART# ARP 256-4001
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( We'll refund the difference! )

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Phone 1-888-627-3736



$ 439.55   $ 468.86
Instant Savings of 6% ($ 29.31)

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Ford Modular 4.6L (2-Valve & 4-Valve) Head Stud Kit by ARP

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.

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.

Features

  • Premium grade 8740 alloy
  • Color: Black oxide
  • Head Style: Hex

Benefits

  • Better fatigue strength than those studs that are threaded prior to heat-treat
  • Prevents blown head gaskets, and assures optimum engine sealing

Applications

  • Ford Modular 4.6L 2-Valve Engines
  • Ford Modular 4.6L 4-Valve Engines

What's In The Box?

  • 1 - Head Stud Kit

Warranty

  • Manufacturer Standard Warranty

Ford Modular 4.6L (2-Valve & 4-Valve) Head Stud Kit by ARP

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.

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.

Features

  • Premium grade 8740 alloy
  • Color: Black oxide
  • Head Style: Hex

Benefits

  • Better fatigue strength than those studs that are threaded prior to heat-treat
  • Prevents blown head gaskets, and assures optimum engine sealing

Applications

  • Ford Modular 4.6L 2-Valve Engines
  • Ford Modular 4.6L 4-Valve Engines

What's In The Box?

  • 1 - Head Stud Kit

Warranty

  • Manufacturer Standard Warranty

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MAP Limited Lifetime Warranty

1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

For warranty evaluation please create a support ticket via this form Click Here For Customer Service.

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