Engine Breather PCV Valve Rocker Cover 11127555212 For BMW N46B20 E87 E90

Engine Breather PCV Valve Rocker Cover for BMW

This engine breather PCV valve rocker cover for BMW seals the top of the cylinder head while regulating crankcase gases, cross-referencing to part number 11127555212.

Overview

The engine breather PCV valve rocker cover for BMW protects engine internal components while managing harmful crankcase emissions. This engine breather PCV valve rocker cover for BMW integrates the positive crankcase ventilation valve to maintain proper pressure balances. Installing this engine breather PCV valve rocker cover for BMW prevents vacuum leaks and oil seepage around the cylinder head.

Built For Performance

• Durable polymer construction resists extreme engine heat and vibration.
• Integrated PCV valve ensures balanced crankcase pressure.
• Precision sealing surfaces prevent oil leaks onto hot exhaust parts.
• Designed to original dimensions for direct fitment on compatible engines.

Fits These Machines

• for BMW E87 N46B20
• for BMW E90 N46B20

On-The-Job Use

• Resolving rough idle and vacuum leak codes caused by failed PCV diaphragms.
• Stopping oil leaks that lead to burning smells in the cabin.
• Maintaining clean engine emissions during routine vehicle operation.

Specs At A Glance

Good To Know

Q: Why does the PCV valve need to be replaced with the cover? A: On many modern designs, the PCV valve is built into the cover, requiring complete replacement if the diaphragm fails.

Q: What are the signs of a failing PCV rocker cover? A: Common symptoms include a whistling noise from the engine, high oil consumption, and rough engine idling.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.