Non Return Valve For Engine Oil Circulation

Product Details

When it comes to maintaining peak performance in your BMW's valvetrain, oil pressure delivery is critical. Over time, factory cylinder head check valves can clog, wear down, or leak, allowing engine oil to drain out of the upper valvetrain assembly and VANOS units while parked. This loss of oil pressure leads to noisy lifter tick and delayed VANOS engagement during startup.

The Febi Bilstein Cylinder Head Oil Check Valve (Non-Return Valve) is designed to keep oil right where it belongs. Engine performance and timing accuracy rely heavily on instant oil pressure—this OE-quality unit provides a dependable solution to maintain oil retention, protect vital cam components, and keep your BMW running at its absolute best.

Key Features

• Prevents upper valvetrain oil drain-back during engine shutdown

• Eliminates low-oil-pressure startup rattle and valvetrain starvation

• Precision-engineered OE match for seamless fitment

• Includes high-temp sealing O-ring ready for installation

Specifications

• Manufacturer: Febi Bilstein

• Manufacturer Part Number: 178664

• Overall Length: 57 mm

• Thread Fitting: M14 x 1.5

• Weight: 0.02 kg

• OE Part Cross Reference: 11 36 7 541 692, 11 36 7 529 405

Prop 65 Warning

Product Q&A

Lifetime Replacement

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