2026 BMW X5 Cooling System Parts

This table covers the engine coolants and antifreeze formulations specified for this cooling system. Typical signs include a rising temperature gauge, rusty or sludged coolant, or a heater that blows cold. Use the chemistry named in the notes. Mixing silicate, OAT and HOAT formulas can gel in the radiator. Read more

5 Coolant / Antifreeze parts are listed for the 2026 BMW X5, from PRESTONE and VALVOLINE. 1 part fits every engine; the other 4 are engine-specific.

In the Economy grade, VALVOLINE supplies 1 part: the catalog's value-priced group. A representative part number is VALVOLINE 719009.

The Heavy Duty section lists 1 option from PRESTONE — rated for severe service. PRESTONE AFC12100 is listed in this group.

The Standard Replacement section lists 1 option from VALVOLINE — built to original-equipment specification. VALVOLINE 904685 is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

Part numbers include VALVOLINE 719009, PRESTONE AFC12100 and VALVOLINE 904685, among others listed above.

This table covers the overflow / expansion tanks that hold extra coolant. Read more

2 Coolant Reservoir parts for the 2026 BMW X5 come from REIN. Every part fits all 3 engine options (3.0L L6 ELECTRIC/GAS Turbocharged, 3.0L L6 Turbocharged and 4.4L V8 Turbocharged).

This group includes REIN EPT0277 and REIN EPK0277.

This table covers the caps on the overflow / expansion tank. Typical signs include a leak at the neck, a cap that will not hold pressure, or a missing tether. Match the pressure rating or thread in the notes — radiator, reservoir and fuel caps are not interchangeable. Read more

6 Coolant Reservoir Cap parts for the 2026 BMW X5 come from 2 brands — MOTORAD and REIN.

Part numbers include MOTORAD T76, MOTORAD T64 and MOTORAD T65, among others listed above.

This table covers the radiators that dump engine heat to airflow through the core. Typical signs include overheating in traffic, a wet core, or coolant that disappears with no puddle. Replace the cap if it cannot hold the rated pressure, and bleed the system after the swap. Read more

3 Radiator parts are listed for the 2026 BMW X5, from CSF and UAC.

Part numbers include CSF 4009, CSF 4011 and UAC RA14004C.

This table covers the fan assemblies (and clutches, where listed) that pull air through the radiator. Read more

This group shows a single part: TYC 625170.

This table covers the senders that report coolant temperature to the gauge or ECU. Typical signs include a gauge that sits on empty or overheat, or a lamp that does not match what the engine is doing. Rule out the cluster and the wiring before replacing the sender. Read more

2 Temperature Sender / Sensor parts are listed for the 2026 BMW X5, from NISSENS and STANDARD MOTOR PRODUCTS.

Part numbers include NISSENS 207110 and STANDARD MOTOR PRODUCTS TS658.

This table covers the thermostats that open the coolant circuit at the specified temperature. Typical signs include slow warm-up, a gauge that climbs in traffic, or heat that never quite arrives. Replace the housing gasket with the thermostat and bleed the system so a trapped air pocket does not cook the new part. Read more

2 Thermostat parts for the 2026 BMW X5 come from 2 brands — MOTORAD and REIN.

Listed part numbers: MOTORAD TA3156 and REIN CTA0028.