2025 BMW X4 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

4 Coolant / Antifreeze parts are listed for the 2025 BMW X4, from VALVOLINE and PRESTONE. All of them fit every engine offered in the 2025 X4.

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.

1 ungrouped part is 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

6 Coolant Reservoir parts for the 2025 BMW X4 come from 2 brands — REIN and TECHPRO. The "Popular" part is REIN EPT0262. 4 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: REIN EPT0262, REIN EPK0262 and REIN EPT0277, plus the other parts above.

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 2025 BMW X4 come from 3 brands — MOTORAD, REIN and CALORSTAT. The "Popular" part is MOTORAD T64. 4 parts fit every engine; the other 2 are engine-specific.

Listed part numbers: MOTORAD T64, REIN CPE0035 and CALORSTAT RC0084, plus the other parts 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

7 Radiator parts are listed for the 2025 BMW X4, from CSF, TECHPRO, FVP and 2 other brands. 5 parts fit every engine; the other 2 are engine-specific.

Economy: 1 part, from TECHPRO. A representative part number is TECHPRO BM3010199.

The Standard Replacement section: 6 options from CSF, FVP, MAHLE / CLEVITE and 1 other brand. CSF 4003 is listed in this group.

Listed part numbers: TECHPRO BM3010199, CSF 4003 and CSF 4007, plus the other parts above.

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

3 Radiator Fan Assembly parts for the 2025 BMW X4 come from 2 brands — TECHPRO and TYC.

The Economy section: 1 option from TECHPRO. TECHPRO BM3115136 is listed in this group.

Standard Replacement: 1 part, from TYC. A representative part number is TYC 625160.

1 further part sits outside the graded sections, with the same engine-level match.

This group includes TECHPRO BM3115136, TYC 625160 and TECHPRO BM3115142.

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

3 Temperature Sender / Sensor parts are listed for the 2025 BMW X4, from NISSENS, STANDARD MOTOR PRODUCTS and VNE. All of them fit every engine offered in the 2025 X4.

This group includes NISSENS 207110, STANDARD MOTOR PRODUCTS TX332 and VNE 941041.

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

7 Thermostat parts for the 2025 BMW X4 come from 5 brands — MOTORAD, FOUR SEASONS, BECK/ARNLEY and 2 other brands. The "Popular" part is MOTORAD 606221.

Listed part numbers: MOTORAD 606221, BECK/ARNLEY 1430869 and FOUR SEASONS 86364, plus the other parts above.

This table covers the seals at the thermostat housing and water outlet. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Thermostat / Thermostat Housing / Water Outlet Seal parts are listed for the 2025 BMW X4, from FEL-PRO and MAHLE / CLEVITE.

Part numbers include FEL-PRO 36226 and MAHLE / CLEVITE C32504.

This table covers the housings and outlets the thermostat sits in. Read more

This group shows a single part: VEMO V20991310.

This table covers the pumps that circulate coolant through the block and radiator. Typical signs include coolant at the weep hole, pulley play, or a growl from the front of the engine. Replace the thermostat and refill with the specified coolant whenever the pump comes off. Read more

8 Water Pump parts for the 2025 BMW X4 come from 5 brands — FVP, GMB, GATES and 2 other brands. The "Popular" part is GATES 41236.

This group includes GATES 41236 and GMB 1153360 and the remaining parts above.

This table covers the gaskets between the water pump and the block or housing. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2025 BMW X4 — AJUSA 01732500.