DISA Valve Vacuum Membrane – BMW M52TU / M54 / M56 | OEM 11617502269 1161144004911617502269 11611440049 DISA Vacuum Membrane for BMW M52TU, M54 and M56 This DISA valve vacuum membrane is designed for BMW M52TU, M54 and M56 engines using compatible DISA unit references 11617502269 and 11611440049. It replaces the failed internal diaphragm inside the DISA valve and helps restore correct intake manifold flap control. A torn or hardened DISA membrane can cause vacuum leaks, rough idle, hissing sounds from the intake manifold area,

Cost-effective solution when the pump body and drive mechanism are still usable

unbalanced engine operation

A failed VANOS on the BMW S54 E46 M3 causes loss of high-RPM power

but a replacement spacer used when the driveshaft itself is still serviceable

which begins to beat against the structure

and hardware

2 CDI | W203 / W210 / W211 | OEM 6110903637

Restores Variable Timing: Correct oil pressure restores full variable valve timing across the RPM range

Complete Rebuild Kit for BMW Transfer Case Servo — Fix xDrive AWD Faults Without Buying a New Servo

Targeted Fix: Worn piston and seals are the failure cause — not the motor

Fix Boost Faults and Wastegate Rattle on Your BMW N20 — Steel Wastegate Rebuild Kit

the system can lose sealing ability and cause PCV-related symptoms