The 2025 BMW M4 has 17 cooling system parts with verified fitment on this page — 5 part types and 12 brands, covering the 3.0L L6 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2025 BMW M4, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses. 14 parts of the 17 listed are Coolant Reservoir Cap (5 parts), Thermostat (5 parts) and Temperature Sender / Sensor (4 parts). The other 2 part types cover the remaining 3 parts.
Every part on this page is matched to the 3.0L L6 Turbocharged — the only engine offered in the 2025 BMW M4.
The most listed brands for 2025 BMW M4 cooling system parts are REIN (3 parts), CALORSTAT (3 parts) and MOTORAD (2 parts), plus 9 more brands.
2 parts on this 2025 BMW M4 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including REIN CPE0034 (Coolant Reservoir Cap) and MOTORAD 606221 (Thermostat). Click any part number to see every vehicle that part fits.
Coolant / Antifreeze
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 719009 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Multi-Vehicle Yellow1 Gallon | View on Amazon |
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.
This group shows a single part: VALVOLINE 719009.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN Popular | CPE0034 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RADIATOR | View on Amazon |
| CALORSTAT | RC0084 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RADIATOR | View on Amazon |
| CALORSTAT | RC0087 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Maximum Pressure Rating: 30.0 PS | View on Amazon |
| MOTORAD | T76 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Standard | View on Amazon |
| REIN | CPE0078 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Intercooler | View on Amazon |
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.
5 Coolant Reservoir Cap parts are listed for the 2025 BMW M4, from REIN, CALORSTAT and MOTORAD. REIN CPE0034 carries the "Popular" badge.
Part numbers include REIN CPE0034, CALORSTAT RC0084 and CALORSTAT RC0087, among others listed above.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS | 207110 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Location-Engine Block | View on Amazon |
| STANDARD MOTOR PRODUCTS | TX332 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| VNE | 941041 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS | 2112021 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
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.
4 Temperature Sender / Sensor parts for the 2025 BMW M4 come from 4 brands — NISSENS, STANDARD MOTOR PRODUCTS, VNE and 1 other brand.
This group includes NISSENS 207110, STANDARD MOTOR PRODUCTS TX332 and VNE 941041 and the remaining parts above.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD Popular | 606221 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Housing, Sensor, Seal | View on Amazon |
| BECK/ARNLEY | 1430869 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Gasket/Seal, Housing | View on Amazon |
| CALORSTAT | TE7331105J | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 220.0 F Degrees | View on Amazon |
| FOUR SEASONS | 85956 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Includes Housing | View on Amazon |
| REIN | CTA0028 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
5 Thermostat parts are listed for the 2025 BMW M4, from MOTORAD, BECK/ARNLEY, CALORSTAT and 2 other brands. MOTORAD 606221 carries the "Popular" badge.
This group includes MOTORAD 606221, BECK/ARNLEY 1430869 and CALORSTAT TE7331105J and the remaining parts above.
Thermostat / Thermostat Housing / Water Outlet Seal
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FEL-PRO | 36226 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Thermostat Seal | View on Amazon |
| MAHLE / CLEVITE | C32504 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Molded Rubber | View on Amazon |
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.
2 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2025 BMW M4 come from 2 brands — FEL-PRO and MAHLE / CLEVITE.
Part numbers include FEL-PRO 36226 and MAHLE / CLEVITE C32504.
Buying Cooling System Parts for a 2025 BMW M4
On this vehicle, the cooling system system keeps operating temperature in the narrow band the engine was designed for, from radiator and water pump to thermostat and hoses.
- Confirm you have the 3.0L L6 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Coolant Reservoir Cap and Thermostat .
Frequently Asked Questions
How many cooling system parts fit the 2025 BMW M4?
Our catalog currently lists 17 cooling system parts for the 2025 BMW M4 across 5 subcategories and 12 brands, covering the 3.0L L6 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of cooling system problems on a 2025 BMW M4?
Common symptoms include a rising temperature gauge in traffic, sweet-smelling steam, crusty deposits around hose clamps, or a heater that blows cold. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the thermostat and refill with fresh coolant whenever you change a water pump or radiator; original hoses on an older vehicle are on borrowed time.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2025 BMW M4 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2025 BMW M4?
Every part on this page is matched to the 3.0L L6 Turbocharged engine. Then replace coolant with the exact specification the manufacturer calls for — mixing chemistries can gel and block small passages. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2025 BMW M4
Cooling System Parts for Other BMW M4 Years
Switch vehicle or jump to a subcategory
Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.