Will it fit your vehicle?
This part is listed to suit:
- MakeCummins
Fitment listings are a guide. For a guaranteed match, send us your rego or VIN and our team will confirm the exact part before you pay.
Colt Cam Stage 4 – 5.9 & 6.7L Cummins Includes Colt Cam Tappets and Retainer
$2,525.00
In stock — order before 11am AEST for same-day shipping
Colt Cam Stage 4 – 5.9 & 6.7L Cummins Includes Colt Cam Tappets and Retainer Stage 4: Similar to the Cummins stage 3 but runs a larger EXH profile.
Secure checkout — Square · PayPal · Apple Pay · Google Pay
Willys Workshop · Oxley & Warana, QLD
Easy returns within 14 days
12 Month Warranty
Tuning & Fitment Available
Fast AU-Wide Shipping
Easy returns within 14 days
12 month warranty
Description
Colt Cam Stage 4 – 5.9 & 6.7L Cummins Includes Colt Cam Tappets and Retainer
Stage 4: Similar to the Cummins stage 3 but runs a larger EXH profile. Great for max flow on large singles or compound turbo.
No mods are required, but we do recommend a set of springs if revving over 3000 rpm.
Includes TAPPETS: We recommend only COLT CAMS CUSTOM 1.4 diameter max crown lifters.
Includes RETAINER: All our cams are drilled and tapped to accept our custom retainer to keep the gear from walking off.
- Duration @ .050 – INT 181° EXH 218°
- Cam Lift .280
- Lobe seperation 107.5
- Approximately 200° EGT drop
- Good to 4400 rpm
BREAK IN PROCEDURE
- Cam Lube on all lobes, lifter faces and oil pump gears.
- Oil all bearing journals and lifter barrels.
- Always turn engine over by hand before starting, check for clearances and proper timing location.
- Fire up to 1800 – 2000 rpm. for 18 – 20 minutes.
Note: Most oil companies have taken out a percentage of additives that are meant for anti-scuffing for break in on flat tappet cams, so please ask your local auto parts professional for the best zinc additive they have and add it to your oil before you fire up your engine for the first time. (We prefer ZDD Plus.)
-
- Valve lash all grinds: INT: .010″ EXH .020″ cold.
- Follow Cummins installation instructions, use adequate amounts of assembly lube.
- Retainer torque 44 ft lbs – use red loctite.
- When using our retainer, clearance is required on C.R.
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.
Colt Cam Stage 4 – 5.9 & 6.7L Cummins Includes Colt Cam Tappets and Retainer Stage 4: Similar to the Cummins stage 3 but runs a larger EXH profile. Great for max flow on large singles or compound turbo.
Additional information
| Weight | 1.5 kg |
|---|---|
| Dimensions | 25 × 20 × 12 cm |
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.
Big purchase? Talk to our diesel team first.
Send your rego or VIN and our Australian-based team will manually confirm fitment before you buy.
Prefer to text your rego/VIN? 0485 885 957
