BMW M54 Crankcase Vent Valve & Breather Hose Kit – Complete PCV System Service Replacement for E46, E39, E60, E83, E53 X5 & Z4 Models | Replaces Part No. 11617501566, 11617504535, 11157532649

Restore proper crankcase ventilation and refresh one of the most failure-prone maintenance areas on the BMW M54 engine with this complete Crankcase Vent Valve and Breather Hose Kit. Designed as a full PCV system service replacement, this kit helps restore correct crankcase pressure regulation, proper vapor flow, and smoother engine operation across a wide range of BMW applications using the M54 engine platform.

Over time, the factory crankcase ventilation system can become brittle, clogged, cracked, or leak from years of heat exposure, oil vapor, and repeated engine bay temperature cycles. When that happens, the vehicle may begin to show symptoms such as rough idle, vacuum leaks, oil consumption issues, lean mixture faults, sludge buildup, poor drivability, or increased crankcase pressure. Instead of replacing one failing piece at a time, this complete service kit allows you to refresh the full system at once.

By replacing both the crankcase vent valve and the associated breather hoses together, this kit helps restore proper PCV system function and reduces the chance of old brittle hoses causing problems shortly after the repair. It is one of the smartest preventative maintenance upgrades you can perform on an aging M54-powered BMW, especially if you are already addressing vacuum leaks, intake issues, or oil seepage concerns.

This complete kit is designed for OEM-style fitment and factory-style routing, making it an ideal solution whether you are repairing a failing PCV system, restoring smooth idle and drivability, or proactively refreshing the crankcase ventilation system before larger issues develop. It helps return the M54 to more stable and dependable operation while improving long-term reliability.

Key Features:

• Complete PCV System Service Kit: Includes the crankcase vent valve and breather hoses needed to refresh the full crankcase ventilation system.
• Restores Proper Crankcase Ventilation: Helps maintain correct vapor routing and crankcase pressure regulation across the M54 engine platform.
• Helps Address Common M54 Issues: Can help reduce rough idle, vacuum leaks, oil seepage, lean mixture faults, and poor drivability caused by failing PCV components.
• Ideal Preventative Maintenance Upgrade: Replacing the full system at once helps reduce the chance of old hoses failing after a partial repair.
• OEM-Style Fitment and Routing: Designed to match the original installation layout on compatible BMW applications.
• Supports Long-Term Engine Reliability: Helps keep the crankcase ventilation system functioning properly for smoother and more dependable engine operation.

FITMENT:

• BMW 3 Series – E46 Sedan, Coupe, Touring, Convertible
• BMW 5 Series – E39 Sedan, Touring
• BMW X5 – E53 SUV
• BMW X3 – E83 SUV
• BMW Z3 – Roadster, Coupe
• BMW Z4 – E85 Roadster, E86 Coupe

Compatible with select BMW M54-powered applications including 320i, 325i, 330i, 520i, 525i, and 530i models using this crankcase vent valve and breather hose kit configuration. If you’re unsure whether this kit fits your specific vehicle, please contact us with your VIN and we’ll be happy to verify compatibility before you order.

Replaces Part No. 11617501566, 11617504535, 11157532649

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