Product Description
Stop Oil Consumption and Rough Idle Without Replacing the Entire Valve Cover
Is your BMW N57 diesel engine whistling, leaking oil, or puffing smoke? The culprit is likely a torn PCV (Positive Crankcase Ventilation) diaphragm. Traditionally, BMW dealerships will tell you that the diaphragm is non-serviceable and force you to buy a complete, expensive valve cover assembly.
The Klifex PCV Repair Kit is the professional-grade solution. Our kit allows you to replace only the failed internal diaphragm and cap, restoring factory-spec crankcase pressure and saving you hundreds of dollars in unnecessary parts.
Common Symptoms of a Failed N57 PCV Membrane:
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High Oil Consumption: Excessive oil being sucked into the turbo and intake.
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Engine Whistling: A high-pitched squeal or whistling sound at idle.
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Rough Idling: Poor combustion due to unmetered air/pressure imbalances.
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Oil Leaks: Increased internal pressure forcing oil past gaskets and seals.
Why Choose the Klifex Repair Kit?
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Direct Fit: Engineered to meet or exceed OEM specifications for the N57 engine family.
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High-Grade Elastomer: Our diaphragms are made from advanced heat-and-oil-resistant materials that outlast the factory rubber.
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Complete Solution: Includes both the replacement membrane and the retention cap for a secure, leak-free seal.
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Cost-Efficient: A fraction of the cost of a full BMW valve cover (OEM #11127823181).
Engine & Vehicle Compatibility
Engine Codes: N57, N57N, N57T, N57S, N57X (Diesel)
Fits the following US & Global Models:
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3 Series: E90, E91, E92, E93, F30, F31, F34 GT
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4 Series: F32, F33, F36 Gran Coupe
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5 Series: F07 GT, F10, F11
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7 Series: F01, F02
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X Series: X3 (F25), X4 (F26), X5 (E70/F15), X6 (E71/F16)
Compatible Valve Cover OEM Part Numbers: 11128578811, 11127823181, 11128515745, 11127800309, 11128507607, 11128515746, 11127812894, 11128510234
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Orders ship within 1–2 business days.
Standard delivery:
- USA: Some items ship from our US warehouse and arrive within 3 business days.
- USA-EU: 10–21 business days
- Worldwide: 14–30 business days
Shipping cost is shown at checkout.
Can I exchange or return an item?
Yes, you can exchange or return an item within 14 days of purchase. This right is guaranteed to you by the Law on the Protection of Consumer Rights
To use this feature, please make sure that:
- the product was not in use and has no traces of use: scratches, chips, abrasions, etc.
- the goods are fully completed and the integrity of the packaging is not violated
- retained all labels and factory markings