Crankcase Ventilation PCV Valve – BMW N20 | OEM 1112758841211127588412 PCV Repair Kit for BMW N20 Valve Cover This PCV repair kit is designed for BMW N20 engines using OEM reference 11127588412. It repairs the crankcase ventilation valve area of the valve cover by replacing the failed diaphragm and valve cap. The kit helps restore correct crankcase ventilation function without replacing the complete valve cover assembly. It is intended for targeted repair of the BMW N20 PCV breather system when the membrane

Vacuum diaphragm

It is not a complete valve cover assembly

BMW 3 Series E90/E91/E92/E93

the ventilation system can lose correct pressure control and cause engine operation issues

Check engine light caused by air-fuel mixture issues

Mercedes-Benz S-Class W140 sedan

MINI Paceman R61 — from 2012

and rattle from the turbos at idle

or fails to extend and retract smoothly

and reduced engine efficiency

The membrane regulates crankcase pressure and controls blow-by gas flow through the crankcase ventilation / oil separator system

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