Description
3″ ID Flange for Cummins 5.9/6.7 Holset Turbo Downpipe (HY35 / HX35 / HE351VE / HE351VGT)
Downpipe flange for Holset turbos on the Cummins 5.9 and 6.7, with a 3″ ID and a pipe-welding step for accurate alignment. An internal wastegate clearance pocket keeps the actuator clear, and the 1/2″ thick A36 steel body (not cast) resists warping under heat. Face milled for a reliable seal and CNC machined for accurate assembly.
- Suits HY35, HX35, HE351VE and HE351VGT Holset turbos (Cummins 5.9 / 6.7)
- 3″ ID with pipe-welding step for alignment
- Internal wastegate clearance pocket
- 1/2″ thick A36 steel (not cast), face milled, CNC machined, made in the USA
Confirm your turbo before ordering and our diesel team can check it. Shipped Australia-wide, or fitted in-store at our Oxley (Brisbane) and Warana (Sunshine Coast) workshops.
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.
3″ ID Flange For Cummins 5.9/6.7 Holset Turbo Downpipe – HY-35 HX35 HE351VE HE351VGT Turbo 3″ ID (w/ pipe welding step for accurate alignment) Internal wastegate clearance pocket. 1/2″ Thick (will not warp from heat) Face milled for proper sealing.
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.
