Crankcase Breather Valve Membrane for BMW N47 X1 X3 Engine, Plastic and Metal Construction

Upgrade your BMW N47 engine with the NIGHTKIST Crankcase Breather Membrane — a precise aftermarket replacement crafted from durable plastic and metal. Designed to mirror original factory specifications, it ensures reliable crankcase ventilation in BMW X1 and X3 models, helping prevent oil blow-by, reduce vapor emissions, and support smooth engine operation. This membrane replaces a failed or cracked OEM part and is built for long-term, stable performance.

Main Description

The NIGHTKIST Crankcase Breather Membrane is engineered to match the exact parameters of the original part. It uses a high-quality plastic and metal construction to deliver lightweight strength, excellent resistance to rust, and colorfast durability in varying engine bay conditions. Each item undergoes testing on multiple dedicated test machines to confirm performance and parameter accuracy, ensuring a snug fit and dependable operation as a direct replacement for your BMW’s breather system. This aftermarket membrane is ideal for restoring proper crankcase ventilation on N47 engines found in X1 and X3, as well as related models such as E60/E6 variants, helping maintain engine efficiency and longevity.

Key benefits include stable performance, high reliability, and compatibility with the OE design. The part is intended as a direct replacement for the original crankcase breather membrane and is compatible with OEM numbers 11128508570, 11127797613, and 11127809512, supporting seamless installation without custom adapters or modifications.

Benefits & Tips

• Restore proper crankcase ventilation on BMW N47/N47S engines, reducing oil vapor buildup and potential leaks.
• Direct replacement for specific OEM numbers, ensuring a secure seal and reliable operation without altering surrounding components.
• Ideal after maintenance or when replacing a cracked or worn breather membrane—helping your engine maintain peak breathing and efficiency.

Product specifications

• Brand: NIGHTKIST
• Condition: Brand New
• Material: Plastic + Metal
• Color: as pictured
• Manufacturer Part Number: 11128508570, 11127797613, 11127809512
• Interchange Part Number: 11128508570, 11127797613, 11127809512
• For OE number: 11128508570
• For Engine Number: N47, N47S
• Type: Crankcase Breather Membrane
• Fitment Type: Direct Replacement
• Fitment: For BMW N47 X1 X3 E60 E6
• Origin: Mainland China

Package includes:

• 1x Breather Membrane

Warnings / Reminders

• Please confirm compatibility by comparing part numbers (11128508570, 11127797613, 11127809512) and engine code (N47/N47S) with your vehicle before purchasing.
• Professional installation is recommended.
• Note: The compatibility reference is for guidance; ensure the part matches your specific year/make/model before buying.

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