Crankcase Ventilation Valve – BMW N47N / N47S1 / B47 Diesel | OEM 11128589941

11128589941 Crankcase Ventilation Valve for BMW N47N, N47S1 and B47

This crankcase ventilation valve is designed for BMW and MINI diesel applications using OEM reference 11128589941. It repairs the PCV / crankcase ventilation function in compatible N47N, N47S1 and B47 valve cover designs.

The part is intended for targeted crankcase ventilation repair. It is not a complete valve cover assembly.

OEM / Reference Numbers

Primary OEM number:

• 11128589941

Secondary valve cover reference numbers:

• 11127810584
• 11128570828
• 11128513755
• 11128581798
• 11128581797
• 11128513754
• 11128589943
• 11128576293
• 11127823180
• 11128589942
• 11128516511

Product reference:

• SKU: KL11128589941

Part Type

• crankcase ventilation valve
• PCV valve
• valve cover PCV repair component
• engine breather valve
• crankcase pressure control valve

What This Part Does

The crankcase ventilation valve regulates pressure inside the crankcase and controls blow-by gas flow through the engine breather system. A failed valve can cause pressure imbalance, oil vapor issues, vacuum leak symptoms and unstable engine operation.

Replacing the failed valve helps restore PCV system function while keeping the existing valve cover in service when it is otherwise usable.

Compatible Vehicles

This crankcase ventilation valve is listed for BMW and MINI applications with N47N, N47S1 and B47 diesel engines.

• BMW N47N diesel applications
• BMW N47S1 diesel applications
• BMW B47 diesel applications
• MINI applications with compatible N47N / B47 engine configurations

Engine / Engine Family

• BMW N47N
• BMW N47S1
• BMW B47
• MINI diesel applications using compatible engine family configurations

Common Symptoms of Failure

• incorrect crankcase pressure
• rough or unstable idle
• increased oil consumption
• oil vapor issues in the intake system
• vacuum leak symptoms
• whistling or suction noise from the valve cover area
• check engine light related to air or pressure control faults

Why Choose This Replacement

• Targets the exact repair intent for 11128589941
• Supports multiple related BMW / MINI valve cover reference numbers
• Repairs the crankcase ventilation valve area in the existing valve cover
• Cost-effective alternative to replacing the complete valve cover when only the PCV valve has failed
• Helps restore crankcase pressure regulation and breather system function

Important Before Ordering

• Check that your original valve cover or PCV system matches 11128589941 or one of the listed reference numbers.
• Confirm that your vehicle uses a compatible N47N, N47S1 or B47 diesel engine.
• Compare the valve design with the PCV component installed in your original valve cover.
• This product is a crankcase ventilation valve / PCV repair component, not a complete valve cover assembly.
• Verify compatibility by OEM number, engine type and part design before ordering.

FAQ

• BMW
• MINI

Returns and exchanges

Request a change-of-mind return within 14 calendar days of delivery, then send the goods within 14 calendar days of notifying us. Our voluntary return option applies to unused, uninstalled, complete goods in their original condition and packaging. Exchanges are subject to availability and agreement.

The customer pays change-of-mind return shipping. No restocking fee applies. Refunds and original delivery charges are handled under our Refund & Return Policy and applicable law.

Faulty, damaged or incorrect goods

Email contact-us@klifex.net with your order details and a description of the problem. These claims are separate from change-of-mind returns. Where we are responsible, we bear the required remedy and return costs. Installation alone does not remove mandatory defect rights.

Your legal rights

Applicable statutory rights take precedence, including EU/EEA and UK withdrawal rights and legal guarantees. Necessary inspection does not remove a statutory withdrawal right; deductions for excessive handling must reflect an actual, evidenced loss of value.

Contact us for the correct return address before shipping. Our legal address is not a return address.

Read the full Refund & Return Policy