Description
OptiTorque Patriot Head Stud Kit for 12 Valve
100% manufactured with pride in the USA.
Produced from American melted aircraft quality fine grain clean steel, each fastener is “batch” heat treated with every part individually loaded and arranged to produce the most uniform hardness available ensuring an even clamp load.
All fasteners are stress relieved prior to centerless grounding for maximum straightness and exact tolerance.
The Patriot Series fasteners are thread rolled hard and include an optimised stretch area designed to out perform the competition in cycle fatigue.
Each fastener is hot temperature oiled and brilliant black oxide coated for added corrosion resistance.
The kit contains: forged high strength heat treated 12 point nuts and precision ground, thru hard load distributing washers to further promote a proper and uniform clamp load, (6) high strength m8x1.25 Rocker pedestal attaching bolts, TrueTorq+ ® fastener assembly lubricant and installation instructions.
This kit fits 12v Cummins engines found in 89-98 Dodge Ram trucks.
Fastener lengths are engineered from O.E.M. production parts and machine tolerances. Aftermarket or custom manufactured parts may require fitment modifications or length alterations
Shipped Australia-Wide
- Dispatched from within Australia with tracking.
- Same-day dispatch on in-stock orders placed before 11am AEST, Monday–Friday.
- Shipping is calculated at checkout based on size, weight and your delivery address.
- Estimated delivery 2–7 business days depending on your location.
Freight question? Call us on (07) 5619 7869.
OptiTorque Patriot Head Stud Kit for 12 Valve 100% manufactured with pride in the USA.
Double Duty Diesel — Manufacturer Pass-Through Warranty
Double Duty Diesel parts carry the original manufacturer's warranty:
- Fluidampr — Lifetime warranty on harmonic balancers
- MAHLE / Clevite — 12 months on bearings, gaskets, sealing components
- Dynomite Diesel — 12 months on stock-spec injectors and pumps; performance/race spec varies
- Power Driven Diesel — 12 months on turbos and bundled tuning kits
- Returns must be notified within 30 days of delivery
- Parts only — installation not covered
Workshop fitment available at Willys for transmissions, injectors and engine internals.
Read the full Double Duty Diesel warranty terms →
Warranty claims are coordinated through Willys Workshop. Email sales@willysworkshop.com.au or call Warana (07) 5619 7869 / Oxley (07) 3377 3421 with your order number and a description of the issue.
