Used BMW i4 Water Pump

Yes, but not in the way you might expect from a petrol car. The BMW i4 is a fully electric vehicle, so it has no combustion engine and no traditional engine-driven water pump. Instead, it uses one or more electric coolant pumps to manage thermal regulation of the battery pack, power electronics, and electric motors. If you need a coolant pump for your i4, you should search specifically for an electric coolant pump rather than a conventional water pump.

Almost certainly not. The i4's electric coolant pumps are purpose-built for high-voltage EV thermal management and are quite different in design, voltage, and connector specification from the mechanical or auxiliary water pumps found on petrol or diesel BMWs. You should source a pump taken from another i4 of the same generation, and confirm compatibility against your exact build date and registration with the breaker. Do not assume cross-model compatibility based on the BMW badge alone.

The BMW i4 (G26) launched in the UK in late 2021, and a facelift was introduced for the 2024 model year, bringing updated software and some hardware revisions. Whether the coolant pump changed at that facelift boundary is not something we can confirm as fact, so you should check your registration against the breaker's donor vehicle build date before buying. Naming the boundary — pre-facelift 2021–2023 versus facelift 2024-on — is the key question to put to any breaker you contact.

Yes, it may well matter. The eDrive40 is a single rear-motor variant while the M50 is a dual-motor all-wheel-drive variant with higher power output, and the thermal management systems between the two are likely to differ in pump specification, layout, or quantity. Always tell the breaker exactly which variant you have — eDrive40 or M50 — along with your registration, so they can match the pump to the correct donor car rather than just the i4 model name.

Trim level on its own, such as Sport or M Sport badging, does not affect the coolant pump specification; what matters is the underlying drivetrain variant (eDrive40 or M50) and the build date of your car. Two i4 eDrive40s with different trim badges should share the same pump provided they are from the same production period, so don't let trim names distract you from confirming the drivetrain and build date with your breaker.

A used electric coolant pump from a breaker is a legitimate and commonly sourced part, but whether any module pairing or coding to your vehicle's systems is required after fitting is something you must confirm with your fitting garage or the breaker rather than assume. The i4's high-voltage architecture means any work near the cooling or electrical systems should be carried out by a technician familiar with EV safety procedures. Always check with the breaker that the part was pulled from a like-for-like i4 variant matching your registration.