GMC S15 Thermostats and Housings
This page brings together thermostats and housings for the GMC S15, covering model years 1982–1990. The range includes engine coolant thermostats, thermostat housings, water outlets, and complete kits — with OE replacement and performance options available. Select your year above and we'll show only the thermostats and housings that fit your GMC S15. Fitment is checked against our vehicle data for every part listed.
Derale Performance 15719 Billet Fluid Control Thermostat Kit 1/2" NPT 180°F
Mishimoto MMTS-WRA-87L Racing Thermostat Low-Temp 180°F Jeep Wrangler 2.5L/4.0L/4.2L 1987-2006
Mishimoto MMTS-MUS-86A Street Thermostat for 1986-1995 Ford Mustang GT/Cobra
Mishimoto MMTS-MUS-96A Ford Mustang V8 Street Thermostat 1996-2004
MAHLE TX 28 92D Engine Coolant Thermostat Insert 92°C with Seal
What's here for your GMC S15
- Engine Coolant Thermostats — OE replacement and performance options, with gasket-included kits available
- Engine Coolant Thermostat Housings — direct-fit housing assemblies for 1982–1990 applications
- Engine Coolant Water Outlets — replacement outlets to restore coolant flow path connections
- Thermostat and Housing Kits — bundled sets combining the thermostat, housing, and related hardware
The widest selection here comes from Motorad, MAHLE, Gates, and Standard Motor Products, each offering a broad range of fitment-specific parts for the GMC S15. Other categories GMC S15 owners shop for: GMC S15 Mirrors, GMC S15 Doors and Door Parts and GMC S15 Manual Transmission Parts, or browse all GMC S15 parts and accessories.