Mack U Thermostats

Your Mack U will be happy to know that the search for the right Thermostats you’ve been looking for is over! Advance Auto Parts has 1 different Thermostats for your vehicle, ready for shipping or in-store pick up. The best part is, our Mack U Thermostats start from as little as $20.99.

When it comes to your Mack U, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Thermostats brands so you can shop with complete confidence. We’re sure you will get the right product to keep that U running for a long time.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Thermostats for your U, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

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Compare 22 Mack Thermostats

Carquest Premium – Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15008 (Part No.15008)

Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15008

from

$96.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Engine Coolant HD Thermostat, 15009 (Part No.15009)

Carquest Engine Coolant HD Thermostat, 15009

from

$87.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Thermostat: With Seal, 190 Degrees, 14539 (Part No.14539)

Carquest Thermostat: With Seal, 190 Degrees, 14539

from

$39.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: With Seal, 190 Degrees, 15229 (Part No.15229)

Carquest Heavy Duty Thermostat: With Seal, 190 Degrees, 15229

from

$51.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15228 (Part No.15228)

Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15228

from

$50.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Thermostat: With Seal, 190 Degrees, 14239 (Part No.14239)

Carquest Thermostat: With Seal, 190 Degrees, 14239

from

$41.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: 180 Degrees, 14838 (Part No.14838)

Carquest Heavy Duty Thermostat: 180 Degrees, 14838

from

$21.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: 170 Degrees, 14407 (Part No.14407)

Carquest Heavy Duty Thermostat: 170 Degrees, 14407

from

$38.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: 180 Degrees, 14408 (Part No.14408)

Carquest Heavy Duty Thermostat: 180 Degrees, 14408

from

$38.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15218 (Part No.15218)

Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15218

from

$24.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: 190 Degrees, 14839 (Part No.14839)

Carquest Heavy Duty Thermostat: 190 Degrees, 14839

from

$17.49
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: With Seal, 160 Degrees, 14936 (Part No.14936)

Carquest Heavy Duty Thermostat: With Seal, 160 Degrees, 14936

from

$103.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Integrated Housing HD Thermostat: 180 Degrees, 14908 (Part No.14908)

Carquest Integrated Housing HD Thermostat: 180 Degrees, 14908

from

$89.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: 180 Degrees, 14558 (Part No.14558)

Carquest Heavy Duty Thermostat: 180 Degrees, 14558

from

$70.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Engine Coolant HD Thermostat: With Seal, 190 Degrees, 15199 (Part No.15199)

Carquest Engine Coolant HD Thermostat: With Seal, 190 Degrees, 15199

from

$68.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: 175 Degrees, 14917 (Part No.14917)

Carquest Heavy Duty Thermostat: 175 Degrees, 14917

from

$62.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15198 (Part No.15198)

Carquest Heavy Duty Thermostat: With Seal, 180 Degrees, 15198

from

$55.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Carquest Premium – Carquest Heavy Duty Thermostat: With Seal, 170 Degrees, 15197 (Part No.15197)

Carquest Heavy Duty Thermostat: With Seal, 170 Degrees, 15197

from

$52.99
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Motorad – Motorad Engine Coolant HD Thermostat: With Seal, 190 Degrees, 4087-90 (Part No.4087-90)

Motorad Engine Coolant HD Thermostat: With Seal, 190 Degrees, 4087-90

from

$33.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Motorad – Motorad Heavy Duty Engine Coolant Thermostat: 235 Degrees, 4079-35 (Part No.4079-35)

Motorad Heavy Duty Engine Coolant Thermostat: 235 Degrees, 4079-35

from

$31.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Motorad – Motorad Engine Coolant HD Thermostat: With Seal, 185 Degrees, 4066-85 (Part No.4066-85)

Motorad Engine Coolant HD Thermostat: With Seal, 185 Degrees, 4066-85

from

$21.99
DISCONTINUED – Manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
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Motorad – Motorad Integrated Housing HD Thermostat: 225 Degrees, 4078-25 (Part No.4078-25)

Motorad Integrated Housing HD Thermostat: 225 Degrees, 4078-25

from

$20.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.
See More