BMW 1 / 3 / 5 / 6 / 7 / X / Z Series Valve Cover Crankcase Ventilation Vent Hose Assembly | N54 & N55 Engines | E8X, E9X, F3X, E6X, and More

Restore proper crankcase ventilation and protect your N54/N55 engine with this OEM+ replacement hose.

Keep your BMW’s turbocharged inline-six running at its best with our Crankcase Ventilation Hose (PCV/CCV line) — a critical component in the N54 and N55 engine family. Over time, the factory hose becomes brittle, cracks, or leaks, leading to unmetered air entering the system, rough idle, oil vapor buildup, or even boost and performance issues.

This direct-fit replacement is designed to match OEM specifications, ensuring a perfect seal between the valve cover and intake system. Built from durable, heat-resistant materials, it restores proper crankcase pressure regulation while preventing harmful oil vapors from coating your intake tract and turbo system.

Replacing a worn hose is a simple, preventative upgrade that helps avoid costly repairs down the road. Whether you’re restoring reliability on a daily driver or maintaining a tuned performance build, this hose is a must-have replacement for any aging N54/N55 BMW.

Key Features

• OEM+ Direct Replacement: Fits and functions exactly like the factory hose.
• Restores Proper Ventilation: Prevents vacuum leaks, rough idle, and oil vapor intrusion.
• Durable Materials: Heat- and oil-resistant construction for long life.
• Plug-and-Play Fitment: No modifications required — installs in minutes.
• Cost-Effective Maintenance: Protects your turbos and intake system from premature wear.

FITMENT: 

• BMW 1 Series – E82 Coupe, E88 Convertible (N54, N55)
• BMW 1M Coupe – E82 (N54 only)
• BMW 3 Series – E90 Sedan, E91 Touring, E92 Coupe, E93 Convertible (N54, N55)
• BMW 5 Series – E60 Sedan, E61 Touring (N54, N55)
• BMW 5 Series – F10 Sedan (N55)
• BMW 6 Series – E63 Coupe, E64 Convertible (N54/N55 in later trims)
• BMW 7 Series – F01 SWB, F02 LWB (N55 only)
• BMW X1 – E84 (xDrive28i N55)
• BMW X3 – E83 (late N55), F25 (N55)
• BMW X5 – E70 (N55), F15 (N55)
• BMW X6 – E71 (N54, N55), F16 (N55)
• BMW Z4 – E89 Roadster (sDrive35i, sDrive35is N54/N55)

Does Not Fit

• Diesel engines (N47, N57, M57, etc.)
• Naturally aspirated engines (N51, N52, M54, etc.)
• Later B-series engines (B48, B58, etc.)
• S55 engine (uses different crankcase setup)

Replaces Part Numbers (OE & Cross-Reference): 11127584128, 11127584129, 11127584131, 11127584152, 11127602681, 11127617535.

Please refer to the “Fitment” section in the product description for compatibility details.