GMC Sierra 2500 Thermostats and Housings
This page brings together thermostats and housings for the GMC Sierra 2500, covering model years 1999–2013. The range includes individual thermostats, thermostat housings, complete housing assemblies, and water outlets. Choose your model year above and this page keeps only the thermostats and housings that fit your GMC Sierra 2500. Each listing is matched to our vehicle fitment data before it appears here.
Derale Performance 15719 Billet Fluid Control Thermostat Kit 1/2" NPT 180°F
Mishimoto MMTS-VET-97L Low-Temperature Racing Thermostat 160°F
Representative Photo, actual item may vary
What's here for your GMC Sierra 2500
- Engine Coolant Thermostats — individual thermostats including OE replacement and performance styles
- Engine Coolant Thermostat Housings — standalone housings available in materials including black-finished options
- Engine Coolant Thermostat Housing Assemblies — complete kit-style assemblies that may include gaskets and related hardware
- Engine Coolant Water Outlets — outlet fittings that connect to the thermostat housing
The widest selection here comes from Motorad, ACDelco, March Performance, and MAHLE, spanning OE-style replacements and performance-oriented pieces across the 1999–2013 model range. Other categories GMC Sierra 2500 owners shop for: GMC Sierra 2500 Exterior Lights, GMC Sierra 2500 Doors and Door Parts and GMC Sierra 2500 Body and Paint Equipment, or browse all GMC Sierra 2500 parts and accessories.