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Cosworth Head Studs ARP 11mm ( Part Number:COS1 PR7243)

Cosworth Head Studs ARP 11mm

Part #: COS1 PR7243
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Specifications


Brand: Cosworth
Head Alteration Required: No
Length: OEM Spec
Location: Head
Machining Required: No
QTY: 12

Mfgr. Warranty: No Warranty
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days


Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
Standard

Description

Essential for high performance engine builds, heavy duty head studs reduce cylinder head movement in high boost engines optimizing cylinder head to block sealing. Ultra high performance fasteners are manufactured from high tensile strength steel and come complete with nuts and washers.

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RallySportDirect.com Reviews:
Verified Purchase

Dont waste your money
Travis 9 months ago
These are the exact same head studs as the 11mm ARP head studs for twice the price. Do yourself a favor and buy the APR ones.
Comment

  • Q: head stud strength  Travis 9 months ago

    Answer

    Whats the tensile strength rating?


    • A: 220,000 psi is the tensile strength rating for these studs


      Kirill C. 9 months ago
  • Q: Machine work   philiprolle31807 5 years ago

    Answer

    Would you have to get the heads and block machined for these or just the block


    • A: These are OEM fit studs and should not require machining to install.


      Nick S. 5 years ago
  • Q: Power?  CLAUFICAVILEZ 6 years ago

    Answer

    Until I can use this power?


    • A: There is no power limitation needed to properly run these. These are known to help a pretty enormous amount or power prior to failure. Thank you!


      Sterling W. 6 years ago
    • A: The studs are capable of withstanding 600+whp levels of cylinder pressure, assuming there is no detonation. Beyond that may require custom studs in a larger diameter and a more robust sealing solution.


      6 years ago
  • Q: Torque Specs  1Fast05STi 6 years ago

    Answer

    Hi, I know these arent available right now, but I just ordered a set of these about a month ago or so and was wondering if you all would be able to provide the torque specs on these for my 05 STi (EJ25)


    • A: Cosworth is usually good about including instructions with info like this with there products. So it should be no issue.


      Kirill C. 6 years ago
    • A: Send an email to [email protected] and we'll send you the instructions with the torque specs.


      6 years ago