Thermostats

A BMW thermostat controls the flow of coolant from your BMW engine through the radiator. During warmup coolant flows, but not into the radiator until proper operating temperature has been reached. Only then does the BMW thermostat open and allows coolant to move through your radiator for engine cooling, adjusting flow rate to ensure safe operating temperatures under all conditions. Whether a thermostat is stuck open (engine too cold) or thermostat stuck closed (engine too hot) an old or failing thermostat must be replaced immediately. Use our SEARCH BY MODEL feature to filter these items for your BMW.

Want to learn more about your BMW's cooling system? Check out our BMW cooling system tech page by clicking here.

Need help finding Thermostats for your BMW? Call us at 877.639.9648, email us, or live chat for expert assistance.

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Thermostat O-Ring, Wahler - E46 M3, MZ3 S54, Z4M

Seals thermostat to water pump housing. OEM replacement for BMW part #11531318402.

Price: $3.99
8.67

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Engine Coolant Thermostat OEM - E28 M5 E24 M6 - 80 Degree C

OEM Vernet-Calorstat 80C coolant thermostat for the S38 engine.

Price: $17.98
68.38

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Thermostat, Rein - 128i/135i, 325i/328i/330i/335i, X3, Z4

OEM-type thermostat to regulate cooling system temp. Replaces BMW part #11537549476.

Price: $55.99

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Auto Transmission Cooler Thermostat, Rein - E46, E83 X3, E53 X5, E85/E86 Z4

OEM-type thermostat to regulate transmission cooler. Replaces BMW part #17111437362.

Price: $24.90
101.55

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Competition Thermostat Kit, Mishimoto 70C - E46, E39, E60, X3, X5, Z3, Z4 (M52TU/M54)

Replacement mechanical thermostat kit for the failure-prone electronic part

Price: $117.95
143.95

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Competition Thermostat Kit, AAF 80C - E46, E39, E60, X3, X5, Z3, Z4 (M52TU/M54)

Replacement mechanical thermostat kit for the failure-prone electronic part

Price: $174.99

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Thermostat Assembly, URO - E39 540i, E38 740i/iL, X5 4.4/4.6is, M62TU

Aftermarket replacement thermostat for your cooling system. Replaces BMW part # 11531436386

Price: $44.99
134.48

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Coolant Outlet Connector, BMW - F22, F3X, G30, G12, G01, G02 (B58A)

Coolant return pipe on side of engine block. Genuine replacement for BMW part #11118619408.

Price: $35.53
37.40

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Thermostat Housing Gasket, BMW - E60 M5, E63 M6

Genuine replacement gaskets for the thermostat housing on each bank. Replaces BMW part #11537834168.

Price: $16.29
17.15

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OEM Coolant Thermostat - N47/N57 Diesel - F30 F31 F10 F02 F25 F15

OEM coolant thermostat for models with the N47 or N57 diesel engine.

Price: $16.99
93.36

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Thermostat for Transmission Cooler - E53 X5 4.4i 4.6is 4.8is (2002-2006)

Original BMW thermostat controls fluid flow to the transmission oil cooler.

Price: $95.54
100.57

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Engine Coolant Thermostat - Mahle - N51 N52 N54 Engines

OEM-quality thermostat for engine cooling on BMW N51, N52, and N54 engines.

Price: $61.99

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Thermostat, BMW - F22 228i, F3X 328i/428i, F10 528i, X3/X4, Z4 28i (N20/N26)

Genuine BMW thermostat for N20 and N26 4-cylinder engines.

Price: $144.38
164.31

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OEM Thermostat - E32 750il E31 850i 850Ci 850SCi - M70 S70 Engine

OEM coolant thermostat for M70 and S70 V12 engines.

Price: $31.99
89.77

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Thermostat Assembly, Behr - E39 540i, E38 740i/iL, M62

OEM replacement thermostat for your cooling system. Replaces BMW part #11531437526 for 96-98 models only.

Price: $80.99
134.48

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Thermostat O-Ring, Genuine BMW - E46 M3, MZ3 S54, Z4M

Original BMW seal for between the S54 thermostat and water pump housing, BMW part #11531318402

Price: $8.49
9.77

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Heat Management Module Thermostat, BMW - F22 230i, F3X 330i/430i, G30 530i, G01 X3, G02 X4

Thermostat central to the B46 cooling system. Genuine replacement for BMW Part # 11537644811 (11-53-7-644-811).

Price: $299.01
331.32

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Coolant Thermostat, Mahle - E70 X5 3.0si (N52) & E71 X6 35i (N54)

OEM-quality thermostat for engine cooling on E70 X5 (N52) and E71 X6 (N54).

Price: $84.99
120.38

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Thermostat/Heat Management Module, BMW - F44, F48, F39, B46D, B48D

Thermostat central to the B46/B48 cooling system. Genuine replacement for BMW part #11538843405.

Price: $395.70
416.53

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Mishimoto Racing Thermostat with Housing - S55 & S58 Engines

Thermostat opens at a temperature 9 degrees lower than stock, helping to cool your engine more effectively.

Price: $117.95
141.76

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Coolant Thermostat - Genuine BMW - F25 X3 28i xDrive (2011-2012)

Original BMW thermostat for the N52 6-cylinder engine used on the 2011-2012 X3 28i xDrive.

Price: $158.80
180.72

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Thermostats

Thermostat O-Ring, Wahler - E46 M3, MZ3 S54, Z4M

Price: $3.99 8.67

Engine Coolant Thermostat OEM - E28 M5 E24 M6 - 80 Degree C

Price: $17.98 68.38

Thermostat, Rein - 128i/135i, 325i/328i/330i/335i, X3, Z4

Price: $55.99

Auto Transmission Cooler Thermostat, Rein - E46, E83 X3, E53 X5, E85/E86 Z4

Price: $24.90 101.55

Competition Thermostat Kit, Mishimoto 70C - E46, E39, E60, X3, X5, Z3, Z4 (M52TU/M54)

Price: $117.95 143.95

Competition Thermostat Kit, AAF 80C - E46, E39, E60, X3, X5, Z3, Z4 (M52TU/M54)

Price: $174.99

Thermostat Assembly, URO - E39 540i, E38 740i/iL, X5 4.4/4.6is, M62TU

Price: $44.99 134.48

Coolant Outlet Connector, BMW - F22, F3X, G30, G12, G01, G02 (B58A)

Price: $35.53 37.40

Thermostat Housing Gasket, BMW - E60 M5, E63 M6

Price: $16.29 17.15

OEM Coolant Thermostat - N47/N57 Diesel - F30 F31 F10 F02 F25 F15

Price: $16.99 93.36

Thermostat for Transmission Cooler - E53 X5 4.4i 4.6is 4.8is (2002-2006)

Price: $95.54 100.57

Engine Coolant Thermostat - Mahle - N51 N52 N54 Engines

Price: $61.99

Thermostat, BMW - F22 228i, F3X 328i/428i, F10 528i, X3/X4, Z4 28i (N20/N26)

Price: $144.38 164.31

OEM Thermostat - E32 750il E31 850i 850Ci 850SCi - M70 S70 Engine

Price: $31.99 89.77

Thermostat Assembly, Behr - E39 540i, E38 740i/iL, M62

Price: $80.99 134.48

Thermostat O-Ring, Genuine BMW - E46 M3, MZ3 S54, Z4M

Price: $8.49 9.77

Heat Management Module Thermostat, BMW - F22 230i, F3X 330i/430i, G30 530i, G01 X3, G02 X4

Price: $299.01 331.32

Coolant Thermostat, Mahle - E70 X5 3.0si (N52) & E71 X6 35i (N54)

Price: $84.99 120.38

Thermostat/Heat Management Module, BMW - F44, F48, F39, B46D, B48D

Price: $395.70 416.53

Mishimoto Racing Thermostat with Housing - S55 & S58 Engines

Price: $117.95 141.76

Coolant Thermostat - Genuine BMW - F25 X3 28i xDrive (2011-2012)

Price: $158.80 180.72

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Price: $3.99
8.67

Price: $17.98
68.38

Price: $24.90
101.55

Price: $117.95
143.95

Price: $44.99
134.48

Price: $35.53
37.40

Price: $16.29
17.15

Price: $16.99
93.36

Price: $95.54
100.57

Price: $144.38
164.31

Price: $31.99
89.77

Price: $80.99
134.48

Price: $8.49
9.77

Price: $299.01
331.32

Price: $84.99
120.38

Price: $395.70
416.53

Price: $117.95
141.76

Price: $158.80
180.72