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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Showing In Stock Items. Show All 48 Items.

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Results 1 - 25 of 46

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 ( 143 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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

4.26 out of 5 stars ( 39 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

MotoRad Spec-R Racing Thermostats MRD100

Thermostat, Spec-R, 160 Degrees F, Stainless Steel/Copper, Universal, Each

Part Number: SNN-MRD100

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

MotoRad Spec-R Racing Thermostats MRD104

Thermostat, Spec-R, with Seal, 160 Degrees F, Steel/Copper, Universal, Each

Part Number: SNN-MRD104

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

MotoRad Spec-R Racing Thermostats MRD105

Thermostat, Spec-R, with Seal, 160 Degrees F, Stainless Steel/Copper, Universal, Each

Part Number: SNN-MRD105

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

MotoRad Spec-R Racing Thermostats MRD101

Thermostat, Spec-R, 160 Degrees F, Steel/Copper, Universal, Each

Part Number: SNN-MRD101

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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: Tomorrow

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Estimated Ship Date: Tomorrow

MotoRad Spec-R Racing Thermostats MRD106

Thermostat, Spec-R, 160 Degrees F, Steel/Copper, Ford, Lincoln, Each

Part Number: SNN-MRD106

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

MotoRad Spec-R Racing Thermostats MRD103

Thermostat, Spec-R, with Seal, 160 Degrees F, Steel/Copper, Chrysler, Dodge, Jeep, RAM, Each

Part Number: SNN-MRD103

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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: Apr 6, 2026 if ordered today

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Estimated Ship Date: Apr 6, 2026 if ordered today

MotoRad Spec-R Racing Thermostats MRD107

Thermostat, Spec-R, with Seal, 170 Degrees F, Steel/Copper, Ford, Each

Part Number: SNN-MRD107

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

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