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GENUINE BMW Water Pump - 11-51-8-638-026

GENUINE BMW Water Pump - 11-51-8-638-026

GENUINE BMW
Availability:
5+ in stock, ready to be shipped

Ships same or next business day

SKU 11-51-8-638-026
$185.20 - $185.20
$185.20
$185.20 - $185.20
$185.20
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GENUINE BMW

Water Pump

This product also goes by these part numbers: 11 51 8 638 026, 11518638026, 11-51-8-638-026

This part also goes by the following cross reference.

Cross Reference Part Number: 11518638026

Fits These Vehicles 13 applications
BMW
Make Model Engine Years
BMW 230i xDrive 2.0L4 2017–2021
BMW 230i 2.0L4 2017–2021
BMW 530i xDrive 2.0L4 2017–2020
BMW 530i 2.0L4 2017–2020
BMW 430i xDrive Gran Coupe 2.0L4 2017–2020
BMW 430i xDrive 2.0L4 2017–2020
BMW 430i Gran Coupe 2.0L4 2017–2020
BMW 430i 2.0L4 2017–2020
BMW X4 2.0L4 2019–2019
BMW X3 2.0L4 2018–2019
BMW 330i xDrive 2.0L4 2017–2019
BMW 330i GT xDrive 2.0L4 2017–2019
BMW 330i 2.0L4 2017–2019

Fitment data last updated: 2026-06-30

Fits 13 vehicle applications Check vehicle fitment before ordering View fitment

About this Water Pump

The GENUINE BMW 11-51-8-638-026 water pump circulates coolant through the engine, radiator and heater. If it leaks or stops pumping, the engine can overheat quickly, so water pumps are often replaced preventively on high-mileage cars.

Frequently asked questions

What does a water pump do?

It pushes coolant around the cooling system so heat can be carried from the engine to the radiator. Many modern European engines use electric water pumps, and some also have an auxiliary pump for the heater or turbocharger.

What are the signs of a failing water pump?

Coolant leaking from the pump or its weep hole, a whining or grinding noise from a belt-driven pump, the engine temperature rising, heater output dropping, or a warning message from an electric pump.

What should I replace along with the water pump?

Replace the gasket or O-rings and any single-use bolts. On belt-driven pumps it is a good time to replace the drive belt, tensioner and idler pulleys; on timing-belt-driven pumps, replace the pump with the timing belt.

How do I refill and bleed the system?

Fill with the coolant your car's manufacturer specifies and bleed the air out following your car's procedure. Cars with electric water pumps often need a bleed routine run through the car or a diagnostic tool.

How do I make sure this water pump fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

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