2003 GMC W-Series Thermostats & Components

Replacement Thermostats
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4.8L
5.7L
6.0L
  • Gates® - Heavy Duty Engine Coolant Thermostat
    Gates®Heavy Duty Engine Coolant Thermostat
    0
    # 100353849
    GMC W3500 Forward / W4500 Forward / W5500 Forward 4.8L 2003, Heavy Duty Engine Coolant Thermostat by Gates®. With Seal. Height from Flange: 0.64". If you want to keep your vehicle safe on the road for many years to come, go with this...
    Great design and functionMade from sturdy materials
    $28.55
  • Gates® - OE Type Engine Coolant Thermostat
    Gates®OE Type Engine Coolant Thermostat
    0
    # 100353864
    GMC W-Series 2003, OE Type Engine Coolant Thermostat by Gates®. If you want to keep your vehicle safe on the road for many years to come, go with this Gates product. Developed with the utmost attention to detail and manufactured from...
    Map Controlled - Bolt-on solution with included sensor that links to the engine control unitSame easy installation as standard ITH
    $13.89 - $28.57
  • Gates® - Premium Engine Coolant Thermostat
    Gates®Premium Engine Coolant Thermostat
    0
    # mpn1871595
    GMC W3500 Forward / W4500 Forward 5.7L 2003, Premium Engine Coolant Thermostat by Gates®. With Seal. Depth from Flange: 1.45". Height from Flange: 0.87". Temperature: 195F. If you want to keep your vehicle safe on the road for many...
    Great design and functionMade from sturdy materials
    $11.73
  • MotoRad® - Engine Coolant Thermostat
    MotoRad®Engine Coolant Thermostat
    0
    # 5739079118
    GMC W-Series 2003, Engine Coolant Thermostat by MotoRad®. State-of-the-art equipment, strict quality control, and functional testing to each thermostat ensure customers that they can trust the high-quality product used in their vehicle....
    Offer precise pressure controlEnsure the proper fit
    $6.49 - $14.66
  • Stant® - OE Type Engine Coolant Thermostat
    Stant®OE Type Engine Coolant Thermostat
    0
    # 3145231888
    GMC W-Series 2003, OE Type Engine Coolant Thermostat by Stant®. Stant Coolant Temperature Sensor, which can be found as original equipment on most major nameplates, is the perfect companion to the Stant thermostat line, ensuring that a...
    Made to keep your vehicle's engine running coolDesigned to maintain proper cooling level and prevent overheating
    $9.21 - $10.46
  • ACDelco® - Professional™ Engine Coolant Thermostat
    ACDelco®Professional™ Engine Coolant Thermostat
    0
    # 2497630740
    GMC W4500 Forward 6.0L 2003, Professional™ Engine Coolant Thermostat by ACDelco®. Without Gasket. Flange Diameter: 2.125". Height: 93.60 mm. ACDelco has a Thermostat and Cap for most GM vehicles on the road today. Engineered to work...
    Heavier-duty components and greater flow rates than standard-line thermostats.Designed to be OE-like
    $8.38 - $8.56
  • Stant® - Heavy Duty Engine Coolant Thermostat
    Stant®Heavy Duty Engine Coolant Thermostat
    0
    # 1216288705
    GMC W3500 Forward / W4500 Forward / W5500 Forward 4.8L 2003, Heavy Duty Engine Coolant Thermostat by Stant®. With 1 seal and without Check Valves. Get fast engine warm-up and dependable engine operating temperature with a Stant...
    Quality construction ensures exact fit and prolonged service life.Stainless steel bridge with channel-design for strength and rigidity.
    $13.56 - $17.10
  • iD Select® - Engine Coolant Thermostat
    iD Select®Engine Coolant Thermostat
    0
    # mpn4738689418
    GMC W3500 Forward 5.7L 2003, Engine Coolant Thermostat by iD Select®. Temperature: 160F. Swap out your worn-out or malfunctioning part with this top-notch product from iD Select. It’s built to OEM specifications to offer the same fit,...
    Direct OEM replacement for your malfunctioning partMade to deliver the ultimate in quality, reliability, and value
    $6.58


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