Description
Steed Speed | 3rd Gen (2003-2007) Cummins T3 / T4 Flange 5.9L / 6.7L
Steed Speed Manifolds are CNC Machined from 1018 Mild Steel Billet and finished with a satin black coating of Techline, these aren’t your typical cheap cast or tubular manifolds.
Steed Speed engineers some of the finest manifolds on the planet.
The Techline coating is capable of handling up to 1700 degrees continuously and up to 2000 degrees for short periods.
Steed Speed warranties workmanship for as long as you own the manifold and a 1 year warranty on the Techline coating.
Features:
- T3 or T4 Flange
- Drastic Performance Gains
- Includes all gaskets & turbo mounting hardware
- Stock Replacement Manifold
- Lifetime Warranty
We are Australian Distributors for Steed Speed and can also supply the full range of Steed Speed manifolds
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.
Steed Speed | 3rd Gen (2003-2007) Cummins T3 / T4 Flange 5.9L / 6.7L Steed Speed Manifolds are CNC Machined from 1018 Mild Steel Billet and finished with a satin black coating of Techline, these aren’t your typical cheap cast or tubular manifolds.
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.
