2023 BMW M3 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

8 Coolant / Antifreeze parts are listed for the 2023 BMW M3, from PRESTONE, VALVOLINE and AISIN. PRESTONE AF3100 carries the "Popular" badge.

The Compatible With All Colors section lists 1 option from PRESTONE — grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. PRESTONE AF3055 is listed in this group.

In the Economy grade, PRESTONE and VALVOLINE supply 2 parts: the catalog's value-priced group. A representative part number is PRESTONE AF3100.

The Premium section lists 3 options from PRESTONE — a step above OE specification in materials, tolerances or warranty terms. PRESTONE AF2100 is listed in this group.

The Standard Replacement section lists 2 options from AISIN and VALVOLINE — built to original-equipment specification. AISIN ACE008 is listed in this group.

Part numbers include PRESTONE AF3100, PRESTONE AF3055 and VALVOLINE 719009, among others listed above.

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

2 Coolant Reservoir parts for the 2023 BMW M3 come from 2 brands — MAHLE / CLEVITE and ÜRO PARTS.

This group includes MAHLE / CLEVITE CRT254000S and ÜRO PARTS 17138093924.

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

5 Coolant Reservoir Cap parts for the 2023 BMW M3 come from 3 brands — MOTORAD, CALORSTAT and REIN. The "Popular" part is MOTORAD T64.

Part numbers include MOTORAD T64, CALORSTAT RC0084 and CALORSTAT RC0087, 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

2 Radiator parts are listed for the 2023 BMW M3, from GPD and UAC.

Economy: 1 part, from GPD. A representative part number is GPD 13873C.

The Standard Replacement section: 1 option from UAC. UAC RA13845C is listed in this group.

Part numbers include GPD 13873C and UAC RA13845C.

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

2 Radiator Fan Assembly parts for the 2023 BMW M3 come from 2 brands — TECHPRO and VDO / CONTINENTAL.

The Economy section: 1 option from TECHPRO. TECHPRO BM3115148 is listed in this group.

Standard Replacement: 1 part, from VDO / CONTINENTAL. A representative part number is VDO / CONTINENTAL FA74027.

Part numbers include TECHPRO BM3115148 and VDO / CONTINENTAL FA74027.

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

4 Temperature Sender / Sensor parts are listed for the 2023 BMW M3, from WALKER PRODUCTS, NISSENS and STANDARD MOTOR PRODUCTS.

Listed part numbers: NISSENS 207110, STANDARD MOTOR PRODUCTS TX332 and WALKER PRODUCTS 2112021, plus the other parts above.

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 2023 BMW M3 come from 7 brands — ÜRO PARTS, GATES, MOTORAD and 4 other brands. The "Popular" part is GATES 34245.

The Economy section: 1 option from ÜRO PARTS. ÜRO PARTS 11537586885 is listed in this group.

Standard Replacement: 6 parts, from GATES, MOTORAD, BECK/ARNLEY and 3 other brands. A representative part number is GATES 34245.

This group includes GATES 34245, ÜRO PARTS 11537586885 and MOTORAD 606221 and the remaining 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 2023 BMW M3, from FEL-PRO and MAHLE / CLEVITE.

This group includes FEL-PRO 36226 and MAHLE / CLEVITE C32504.

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

4 Water Pump parts for the 2023 BMW M3 come from 2 brands — BOSCH and NISSENS.

This group includes BOSCH 0392023486, BOSCH 0392023509 and NISSENS 831361 and the remaining parts above.