Description
Interstate McBee Expansion / Welch plug kit
Includes freeze plugs for the block, on 98-02 5.9L 24v Cummins diesel engines.
Can identify storm block easily by 3 freeze plugs in block under exhaust manifold
Includes;
Cummins Cylinder Head/Block Plug Kits for Cummins 6-B Series (S.T.O.R.M. Block)
5 M-3922072 Plug – Expansion
4 M-3007635 Plug – Expansion
3 M-3900956 Plug – Expansion
1 M-3900687 Plug – Expansion
2 M-3920706 Plug – Expansion
3 M-3900955 Plug – Expansion
1 M-3900958 Plug – Expansion
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.
Interstate McBee Expansion / Welch plug kit Includes freeze plugs for the block, on 98-02 5.9L 24v Cummins diesel engines. Can identify storm block easily by 3 freeze plugs in block under exhaust manifold Includes; Cummins Cylinder Head/Block Plug Kits for Cummins 6-B Series (S.T.O.R.M.
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.
