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What engines and platforms do you make parts for?Updated 6 hours ago

We build high-strength engine fasteners and hard parts, with the deepest coverage on diesel platforms and popular performance gas engines.

Diesel

  • Dodge / RAM Cummins 5.9L 12V — 1989–1998: head stud kits, head stud & rocker arm combo kits, milled rocker arm pedestal assembly kits
  • Dodge / RAM Cummins 5.9L & 6.7L 24V — 1998.5–2025: head stud kits
  • Ford 7.3L Power Stroke — 1993–2002: head stud kits
  • Ford 6.0L Power Stroke — 2003–2007: head stud kits; 2004.5–2010 stand pipe & dummy plug kits
  • Ford 6.4L Power Stroke — 2008–2010: main stud kits
  • Ford 6.7L Power Stroke — 2017–2026: turbo intercooler outlet cold side charge pipes
  • GM / Chevrolet / GMC 6.6L Duramax — 2001–2016, including Hummer: head stud kits
  • GM 6.2L & 6.5L — 1982–2000: head stud kits

Gas performance

  • Chevrolet Gen III / IV LS, 4.8L–6.2L — 2004–2024: head stud kits; rocker arms with bolts and pre-installed trunnion kits for LS1, LS2, LS6, LQ4, LQ9 and LM7; harmonic balancer bolts 1997–2015
  • Subaru Impreza WRX STi EJ20 2.0L & EJ25 2.5L DOHC — 2002–2021: head stud kits
  • Mitsubishi 4B11 Evo X 2.0L — 2008–2015: head stud kits
  • Nissan VQ35 3.5L DOHC — 2002–2008: main stud kits
  • Honda & Acura 1.2L–2.0L 4-cylinder — 1988–2023: connecting rod bolts

Universal tooling and hardware

  • Thread chasers — metric M6 through M16 and imperial 1/4-20 through 1/2-13, sold individually and in sets
  • Assembly lubricant
  • 12-point nuts and washers in common sizes

Confirming your exact application

Use the vehicle search on our site or check the fitment section on any product page. Several platforms split mid-year — the 5.9L Cummins changes at 1998.5, and the Power Stroke changes at 2003 and 2008 — so check your build date if you are on a boundary year.

Don't see your engine?

We produce custom specialty fasteners for high-performance, rare and unique builds, working directly with you on strength and dimensional requirements. Start at xotic-performance.com/pages/custom-applications or email [email protected].

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