Will it fit your vehicle?
This part is listed to suit:
- MakeCummins
- Model4BT
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.
Interstate McBee Lower Engine Gasket Kit 4BT -3.9L Cummins
$340.00
In stock — order before 11am AEST for same-day shipping
This gasket restores a clean factory seal on the Cummins 4BT.
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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
This gasket restores a clean factory seal on the Cummins 4BT. Sourced through Willys Workshop’s Double Duty Diesel dealer network – genuine and performance diesel hard parts for Cummins and built-engine applications. Part reference M3802375.
Listed to suit the Cummins 4BT – confirm against your engine and build before ordering; our diesel team can verify the right part. 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.
This gasket restores a clean factory seal on the Cummins 4BT.
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.
Questions, or need a fitment check?
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
