Mechanical Car Thermostats

It’s simple: a mechanical car thermostat opens when your engine gets too hot, letting coolant flow, and then it closes when the temperature is just right. Summit...

It’s simple: a mechanical car thermostat opens when your engine gets too hot, letting coolant flow, and then it closes when the temperature is just right. Summit Racing Equipment is your ultimate source for mechanical thermostats, with applications for every engine size and opening temperature you would ever need!

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When the heat is on, equip your car or truck with a high-quality thermostat. Shop for stock car thermostat replacements and high-performance upgrades from manufacturers like Meziere, Stant, Vintage Air, ACDelco, Dorman, FlowKooler, JET Performance, Motorcraft, and many more.

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Results 1 - 25 of 49

Summit Racing™ Thermostats SUM-359-180

Thermostat, 180 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Each

Part Number: SUM-359-180

4.44 out of 5 stars ( 142 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-365-160

Thermostat, 160 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Chevy, Pontiac, GMC, LS, Each

Part Number: SUM-365-160

4.24 out of 5 stars ( 38 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-359-160

Thermostat, 160 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Each

Part Number: SUM-359-160

4.38 out of 5 stars ( 78 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-363-160

Thermostat, 160 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Housing, Chevy, Pontiac, Each

Part Number: SUM-363-160

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-362-180

Thermostat, 180 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Chrysler, Dodge, Jeep, Hemi, Each

Part Number: SUM-362-180

4.16 out of 5 stars ( 37 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-366-160

Thermostat, 160 Degree, Copper/Brass, Stainless Body, Chevy, GMC, Cadillac, LS, V8, V6, Each

Part Number: SUM-366-160

4.27 out of 5 stars ( 11 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-367-187

Thermostat, 187 Degree, WithThermostat Housing, Copper/Brass, Stainless Body, GM, Each

Part Number: SUM-367-187

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-367-160

Thermostat, 160 Degree, Bypass Valve, Copper/Brass, GM, Each

Part Number: SUM-367-160

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-363-180

Thermostat, 180 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Housing, Chevy, Pontiac, Each

Part Number: SUM-363-180

3.67 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-359-195

Thermostat, 195 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Each

Part Number: SUM-359-195

4.0 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Summit Racing™ Thermostats SUM-361-180

Thermostat, 180 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Chrysler, Dodge, V8, Each

Part Number: SUM-361-180

3.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Hybrid Racing Low Temp Thermostats for 2002-2006 RSX, CR-V, 2002-2005 CIVIC - HYB-LTT-01-10

Hybrid Racing Low Temp Thermostat (02-05 Civic Si, 02-06 RSX)

Part Number: HYB-HYBLTT0110

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Hybrid Racing Low Temp Thermostats for 2017-2025 CIVIC, 2024-2025 INTEGRA - HYB-LTT-01-20

Hybrid Racing Low Temp Thermostat (17-21 Civic Type-R)

Part Number: HYB-HYBLTT0120

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Summit Racing™ Thermostats SUM-366-180

Thermostat, 180 Degree, Copper/Brass, Stainless Body, Chevy, GMC, Cadillac, LS, V8, V6, Each

Part Number: SUM-366-180

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Thermostats SUM-368-160

Thermostat, 160 Degree, Copper/Brass, Mopar, Each

Part Number: SUM-368-160

2.17 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Thermostats SUM-370-160

Thermostat, 160 Degree, Copper/Brass, Mopar, Ford, Lincoln, Mazda, Mercury, Each

Part Number: SUM-370-160

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Thermostats SUM-366-170

Thermostat, 170 Degree, Copper/Brass, Stainless Body, Chevy, GMC, Cadillac, LS, V8, V6, Each

Part Number: SUM-366-170

2.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Hybrid Racing Low Temp Thermostats HYB-LTT-01-15

Thermostat, Mechanical, Low Temp, 154 degrees F Opening Temperature, Stainless Steel, for use on Acura®, for use on Honda®, Each

Part Number: HYB-HYBLTT0115

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Thermostats SUM-369-195

Thermostat, 195 Degrees F, Stainless Steel, Each

Part Number: SUM-369-195

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Thermostats SUM-370-192

Thermostat, 192 Degree, Copper/Brass, Mopar, Ford, Lincoln, Mazda, Mercury, Each

Part Number: SUM-370-192

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Summit Racing™ Thermostats SUM-361-195

Thermostat, 195 Degree, High-Flow, Bypass Valve, Copper/Brass, Stainless Body, Chrysler, Dodge, V8, Each

Part Number: SUM-361-195

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

Hybrid Racing Low Temp Thermostats HYB-LTT-01-01

Thermostat, Mechanical, Low Temp, 154 degrees F Opening Temperature, Stainless Steel, for use on Acura®, for use on Honda®, Each

Part Number: HYB-HYBLTT0101

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Hybrid Racing Low Temp Thermostats HYB-LTT-01-05

Thermostat, Mechanical, Low Temp, 154 degrees F Opening Temperature, Stainless Steel, for use on Acura®, for use on Honda®, Each

Part Number: HYB-HYBLTT0105

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Mishimoto Low Temperature Racing Thermostats MMTS-4RUN40-03

Thermostat Housing, Toyota 4Runner 4.0L Low-Temp Racing Thermostat, 2003+

Part Number: MIO-MMTS4RUN4003

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2025 if ordered today

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Estimated Ship Date: Dec 18, 2025 if ordered today

Mishimoto Low Temperature Racing Thermostats for 2014-2016 FIESTA - MMTS-FIST-14

Ford Fiesta ST Racing Thermostat

Part Number: MIO-MMTS-FIST14

Not Yet Reviewed

Estimated Ship Date: Dec 19, 2025 if ordered today

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Estimated Ship Date: Dec 19, 2025 if ordered today

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