BMW 1 / 3 / 5 Series / X5 / X6 Thermostat & Water Pump Kit — OEM 11532394968 / 11518635090
Genuine OEM thermostat and water pump kit for BMW's N-series engine family. Factory-original cooling system pair — thermostat and electrically driven water pump supplied together for a complete cooling system service. Maintains precise coolant temperature regulation and flow rate across BMW's turbocharged four and six-cylinder applications.
Part Numbers
- 11532394968 — Thermostat
- 11518635090 — Electric Water Pump
Fitment (Verified)
- BMW 1 Series (2012–2019) — N20 / N26 / N55
- BMW 3 Series (2012–2019) — N20 / N26 / N55
- BMW 5 Series (2012–2019) — N20 / N55
- BMW X5 (2012–2019) — N55
- BMW X6 (2012–2019) — N55
⚠️ VIN confirmation required. Engine code and build date must be confirmed — N20, N26, and N55 cooling system specs differ. Confirm against your VIN before ordering.
Why OEM
BMW's electric water pump and mapped thermostat operate as an integrated ECU-controlled system — flow rate and coolant temperature targets are actively managed. Aftermarket units frequently introduce signal incompatibility causing cooling system fault codes, incorrect temperature regulation, and premature pump failure under sustained load.
Installation Note
Replace thermostat and water pump together — failure of one accelerates wear on the other. Flush and refill cooling system to BMW spec. Verify ECU-commanded pump operation and temperature regulation via diagnostic scan post-installation.







