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High Performance Head Stud Kits by ARP

Part #
Jag 3.4 & 3.8 w/o Lifting Bracket
In Stock In Stock

XKs recently contracted with the worlds leading manufacturer of high performance engine fasteners to make competition-grade head and main studs. These parts far exceed the strength of original or reproduction fasteners and are a must for any high-compression Jaguar engine. The studs are made from 8470 chrome moly with a tensile strength of 190,000psi., the same as used in some NASCAR applications. Standard studs are adequate for a stock engine, but if your'e interested in a high-revving, high-compression Jaguar engine, don't trust that investment to anything but the best.

Kit Contents

Part Number Description Quantity
322-815 ARP Fastner Lubricant 1
37-1681 6.450 x 7/16" Stud 13
37-1683 6.825ËÇ¥ Doweled Stud 1
37-1686 7/16" I.D. Flat Washer 14
37-1688 7/16" 12 Point Head Nut 14


Note: This item replaces part number 17-3500.

The Longest in the Business

  • All Classic British products are warrantied to be free from defects in material and workmanship for 2 years from the date of invoice.
  • All superchargers, supercharger components, and supercharger hardware are warranted to be free from defects in material and workmanship for 1 year from date of invoice.
  • Moss Motors, Ltd. will, at its discretion, repair or replace any part that fails in service within the warranty period. This warranty does not cover labor, failure of related components, normal wear of brake or clutch components or failure resulting from alteration, misuse, accidental damage, faulty installation, or faulty repair.
  • Warranty requests should be submitted to our sales department and must be supported by the original Moss Motors purchase invoice and documentation of the failure.
Make: Jaguar Model: XK120, XK140, XK150, E-Type