2021 BMW X1 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

13 Coolant / Antifreeze parts for the 2021 BMW X1 come from 4 brands — PRESTONE, PEAK, VALVOLINE and 1 other brand. The "Popular" part is PRESTONE AF3100. 12 parts fit every engine; the other 1 is engine-specific.

In the Compatible With All Colors grade, PRESTONE supplies 1 part: grouped under the catalog's "Compatible With All Colors" designation — the notes column spells out what sets them apart. A representative part number is PRESTONE AF3055.

The Economy section lists 3 options from PRESTONE, VALVOLINE and PEAK — the catalog's value-priced group. PRESTONE AF3100 is listed in this group.

In the Heavy Duty grade, PRESTONE supplies 1 part: rated for severe service. A representative part number is PRESTONE AFC12100.

In the Premium grade, PRESTONE and PEAK supply 5 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is PRESTONE AF2100.

In the Standard Replacement grade, AISIN, PEAK and VALVOLINE supply 3 parts: built to original-equipment specification. A representative part number is AISIN ACE008.

This table covers the seals at the Coolant Hose / Pipe. 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

ELRING supplies both parts for the 2021 BMW X1. All of them fit every engine offered in the 2021 X1.

Part numbers include ELRING 283410 and ELRING 521520.

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

One part is listed for the 2021 BMW X1 — HELLA 366365431.

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

3 Coolant Reservoir Cap parts are listed for the 2021 BMW X1, from CALORSTAT, MOTORAD and REIN.

Part numbers include CALORSTAT RC0084, MOTORAD T76 and REIN CPE0078.

This table covers the intercoolers that cool turbo or supercharger charge air. Read more

This group shows a single part: MARELLI MST556.

This table covers the seals at the Intercooler. 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

One part is listed for the 2021 BMW X1 — ÜRO PARTS 13718596850.

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 for the 2021 BMW X1 come from 3 brands — NISSENS, MAHLE / CLEVITE and MARELLI. 1 part fits every engine; the other 6 are engine-specific.

This group includes MAHLE / CLEVITE CR2642000P, MAHLE / CLEVITE CR2763000P and MARELLI BM2145 and the remaining parts above.

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

9 Radiator Fan Assembly parts are listed for the 2021 BMW X1, from FOUR SEASONS, MAHLE / CLEVITE, TECHPRO and 3 other brands. FOUR SEASONS 75919 carries the "Popular" badge.

Economy: 1 part, from GPD. A representative part number is GPD 2812118.

The Standard Replacement section: 6 options from FOUR SEASONS, MAHLE / CLEVITE, UAC and 1 other brand. FOUR SEASONS 75919 is listed in this group.

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

Part numbers include FOUR SEASONS 75919, GPD 2812118 and FOUR SEASONS 75922, among others listed above.

This table covers the upper, lower and connecting hoses between radiator, engine and reservoir. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

One part is listed for the 2021 BMW X1 — GATES 52455.

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

10 Temperature Sender / Sensor parts for the 2021 BMW X1 come from 6 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, GPD and 3 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS TS658.

The Economy section: 2 options from GPD and VEMO. GPD 1814545 is listed in this group.

Standard Replacement: 6 parts, from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, FACET and 1 other brand. A representative part number is STANDARD MOTOR PRODUCTS TS658.

2 further parts sit outside the graded sections, with the same engine-level match.

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

4 Thermostat parts are listed for the 2021 BMW X1, from FOUR SEASONS, SKP and MOTORAD.

Economy: 1 part, from SKP. A representative part number is SKP SKTA9254.

The Standard Replacement section: 2 options from FOUR SEASONS and MOTORAD. FOUR SEASONS 86365 is listed in this group.

1 ungrouped part is not assigned to a grade, with the same engine-level match.

Listed part numbers: SKP SKTA9254, FOUR SEASONS 86365 and MOTORAD TA9254, 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

3 Thermostat / Thermostat Housing / Water Outlet Seal parts for the 2021 BMW X1 come from ELRING. 1 part fits every engine; the other 2 are engine-specific.

Listed part numbers: ELRING 916480, ELRING B22090 and ELRING B22100.

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

One part is listed for the 2021 BMW X1 — MOTORAD CH7107.

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 are listed for the 2021 BMW X1, from BOSCH, FVP, GMB and 1 other brand.

This group includes BOSCH 0392023488 and FVP 1153350 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

2 Water Pump Gasket parts for the 2021 BMW X1 come from ELRING. Every part fits both the 1.5L L3 Turbocharged and the 2.0L L4 Turbocharged.

Part numbers include ELRING 091830 and ELRING B47470.