9 Cooling system parts are listed for the 2026 BMW M2, in 4 part types, covering the 3.0L L6 Turbocharged engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2026 BMW M2, 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. 8 parts of the 9 listed are Coolant Reservoir Cap (4 parts), Coolant / Antifreeze (2 parts) and Temperature Sender / Sensor (2 parts). The other 1 part type covers the remaining 1 part.
The 2026 BMW M2 came with a single engine, the 3.0L L6 Turbocharged, and every part is verified against it.
5 brands supply cooling system parts for the 2026 BMW M2, led by REIN (3 parts), PRESTONE (2 parts) and MOTORAD (2 parts), plus 2 more brands.
Each part number listed for the 2026 BMW M2 opens a page with every vehicle that part fits.
Coolant / Antifreeze
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PRESTONE | AF6110 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MAX Original EquipmentEuropean Blue | View on Amazon |
| PRESTONE | 78023 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | European Vehicles (Teal)1 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.
PRESTONE supplies both parts for the 2026 BMW M2.
Listed part numbers: PRESTONE AF6110 and PRESTONE 78023.
Coolant Reservoir Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORAD | T76 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Standard | View on Amazon |
| MOTORAD | T64 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Standard | View on Amazon |
| REIN | CPE0034 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | RADIATOR | 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.
4 Coolant Reservoir Cap parts for the 2026 BMW M2 come from 2 brands — MOTORAD and REIN.
Listed part numbers: MOTORAD T76, MOTORAD T64 and REIN CPE0034, plus the other parts above.
Temperature Sender / Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NISSENS | 207110 | 🇺🇸 US 🇨🇦 CA | Location-Engine Block | 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.
2 Temperature Sender / Sensor parts are listed for the 2026 BMW M2, from NISSENS and WALKER PRODUCTS.
Part numbers include NISSENS 207110 and WALKER PRODUCTS 2112021.
Thermostat
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| 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.
This group shows a single part: REIN CTA0028.
Buying Cooling System Parts for a 2026 BMW M2
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 Coolant / Antifreeze .
Frequently Asked Questions
How many cooling system parts fit the 2026 BMW M2?
Our catalog currently lists 9 cooling system parts for the 2026 BMW M2 across 4 subcategories and 5 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 2026 BMW M2?
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 2026 BMW M2 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 2026 BMW M2?
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 2026 BMW M2
Cooling System Parts for Other BMW M2 Years
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