Description
The best manifold you can buy for your C15.
A beautifully crafted CNC billet steel masterpiece! Far superior performance than any other product.
EGTs were 150 degrees lower than even the best aftermarket manifold while spooling the turbo faster with higher peak boost and 6 lbs less drive pressure.
This manifold is one piece so will never leak and is easy on studs and gaskets.
In normal service it shouldn’t need to be retorqued either.
Expect long service life and the best fuel economy ever from this manifold.
Fits round port 3406 models & C15 models under Pete and Kenworth hoods. Can also be used on C15 Acerts Converted to single turbo.
*Direct Replacement for 146-9445, confirm casting number before ordering if concerned about fitment
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.
The best manifold you can buy for your C15. A beautifully crafted CNC billet steel masterpiece! Far superior performance than any other product.
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.
