Original BMW Cylinder Head Oil Check Valve (Non-Return Valve) for BMW 5 Series, 6 Series, 7 Series, Alpina B7, and X5 (2002–2010)

The Original BMW cylinder head oil check valve 11-36-7-539-857 is an M14 x 1.5 threaded non-return valve that keeps oil in the cylinder head at start-up on V8 and V12 BMW 5 Series, 6 Series, 7 Series, Alpina B7, and X5 models. A check valve lets oil pass in one direction and stops it from draining back once the engine shuts off. This valve sits in the cylinder head. Over time it can fail and let oil escape from the head, and that failure is a common cause of low oil pressure at start-up on N62-equipped BMWs. Pieces of a failed valve can sometimes be found in the oil filter housing. The valve comes with its O-ring and is made in Germany.

Original BMW Parts carry a 24-month parts warranty.

BMW has produced this number since November 2003. It replaces the earlier 11-36-0-392-105, and BMW marks the change as exchangeable retrospectively, so the current valve can go into cars that left the factory with the earlier part. Numbers 11-36-0-150-305 and 11-36-7-516-120 also cross to this valve. BMW names it simply a non-return valve, with the M14 x 1.5 thread size as its only designation, and it weighs 34 g.

Technical Details

• Manufacturer: BMW (Original BMW Part)
• Part number: 11-36-7-539-857
• BMW part name: non-return valve, M14 x 1.5
• Location: cylinder head oil circuit
• Includes O-ring
• Weight: 34 g (1.2 oz)
• Production start: November 2003
• Supersedes 11-36-0-392-105, exchangeable retrospectively
• Sold individually, made in Germany
• Warranty: 24 months on Original BMW Parts

Common Questions

Can this valve cause low oil pressure at start-up?
Yes. A failed valve lets oil escape from the cylinder head, and that is a common cause of low start-up oil pressure on N62 engines.

Does it replace 11-36-0-392-105?
Yes. BMW supersedes the earlier number with this valve and rates the change as exchangeable retrospectively.

Is the O-ring included?
Yes, the valve comes with its O-ring.

PMB ships Original BMW oil system parts to V8 and V12 owners every week.

Fitment & Compatibility

Use the table below to verify the year and submodel for your build. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.