Description
Cummins 6BT / 4BT Oil Pressure Regulator and Relief Valve Kit
- 1 x Oil pressure regulator Plunger
- 1 x oil pressure regulator spring
- 1 x oil pressure regulator cap and O ring
- 1 x oil pressure relief
Low oil Pressure, check your regulator spring aand also check your plunger for signs of galling or wear – could stick open causing low oil pressure.
Pressure relief reduces flow to oil filter when pressure too high – can lower oil pressure when spring loses tension.
Replace all these parts together to ensure healthy oil pressure in your 4BT / 6BT.
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.
Cummins 6BT / 4BT Oil Pressure Regulator and Relief Valve Kit 1 x Oil pressure regulator Plunger 1 x oil pressure regulator spring 1 x oil pressure regulator cap and O ring 1 x oil pressure relief Low oil Pressure, check your regulator spring aand also check your plunger for signs of galling or wear – could stick open causing low oil pressure.
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.
