Car PartsGMC PartsGMC S300 PartsGMC S300 Thermostats

GMC S300 Thermostats

Keeping your S300 in top shape is your top priority.

Anyone who owns a GMC knows that when it comes to maintaining their car, truck, or SUV only the highest quality replacement parts will do. Auto enthusiasts appreciate the a brand you can trust built into each GMC, and understand that only top quality replacement S300 parts will suffice when maintenance needs to be done. When your GMC S300 rolled off the assembly line, it was destined for a person with discerning taste who prioritizes longevity in their automobile. The vehicle in your driveway symbolizes the best in class when it comes to all the vehicles currently being driven today.

The function and purpose of Thermostats.

Your car or truck has a liquid-cooled engine, and the device that controls the flow of coolant so that the engine can remain cool is your thermostat. On start-up, the thermostat remains closed; shutting off access to the radiator. This gets the coolant hot so that the engine warms up. Once it reaches an ideal temperature, your GMC S300 thermostat then opens up and allows the coolant into the radiator. Now your coolant is part of a constant cycle in your GMC S300 engine that keeps it within a specific range of temperatures that are determined for the engine to achieve the best balance between power, fuel efficiency, and emissions... all thanks to the thermostat.

The best parts are right around the corner.

Select Your YearBuy all the car parts you will ever need from carpartsdiscount.com and realize incredible savings on all your upcoming repairs. At Car Parts Discount, we have real customer support agents here with enough expertise to help you buy the correct GMC S300 part for your project or repair. Don't let a Thermostats repair spell the end of your car, truck, or SUV, and don't gamble with its condition by installing anything but the highest quality repair parts. When it comes to GMC S300 Thermostats parts, you can find them for 1959, 1958, 1957, 1956, 1955 models by clicking the appropriate year below.

Select Your Year

GMC S300 Engine Coolant Thermostat, OEM: 45356
Stant Engine Coolant Thermostat 45356
4.65, Save 40%   POPULAR
OEM: 45356, Item: 383797
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Engine Coolant Thermostat, OEM: 45358
Stant Engine Coolant Thermostat 45358
4.55, Save 40%   POPULAR
OEM: 45358, Item: 383798
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Engine Coolant Thermostat, OEM: 45359
Stant Engine Coolant Thermostat 45359
4.65, Save 40%   POPULAR
OEM: 45359, Item: 383799
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Engine Coolant Thermostat, OEM: 13358
Stant Engine Coolant Thermostat 13358
3.55, Save 39%   NEW ITEM
OEM: 13358, Item: 383501
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Engine Coolant Thermostat, OEM: 13359
Stant Engine Coolant Thermostat 13359
3.35, Save 40%   NEW ITEM
OEM: 13359, Item: 383502
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Engine Coolant Thermostat, OEM: 13356
Stant Engine Coolant Thermostat 13356
3.55, Save 39%   NEW ITEM
OEM: 13356, Item: 383500
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Gates Engine Coolant Thermostat, OEM: 33006S
Gates Engine Coolant Thermostat
5.15, Save 40%   POPULAR
OEM: 33006S, Item: 242850
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Gates Engine Coolant Thermostat, OEM: 33009
Gates Engine Coolant Thermostat
3.85, Save 40%   NEW ITEM
OEM: 33009, Item: 242853
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Gates Engine Coolant Thermostat, OEM: 33009S
Gates Engine Coolant Thermostat
5.15, Save 40%   NEW ITEM
OEM: 33009S, Item: 242849
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8
GMC S300 Gates Engine Coolant Thermostat, OEM: 33006
Gates Engine Coolant Thermostat
3.85, Save 40%   NEW ITEM
OEM: 33006, Item: 242854
10 or More In Stock, Usually ships within 1 business day

GMC S300, 4.4L 4425CC 270Cu. In. L6
GMC S300, 4.7L 4720CC 288Cu. In. V8
GMC S300, 5.2L 5179CC 316Cu. In. V8