View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your 2003 Chevrolet Trailblazer EXT with thermostats? At Tunersports.com we carry a huge selection of the top name brand performance thermostat parts and accessories.
 OUT OF STOCK 33910Gates 98-00 Chevy Camaro V8 / 99-06 Chevy Silverado/GMC Sierra (Gas) OE Type Thermostat - 187 Degree 2003-2003 Chevrolet Trailblazer EXT LS / LT / North Face $51.30 |
 OUT OF STOCK 33963Gates 04-06 Pontiac GTO / 03-06 GMC Envoy / 00-11 Chevrolet Suburban Thermostat 2003-2004 Chevrolet Trailblazer EXT North Face 2003-2006 Chevrolet Trailblazer EXT LS / LT $37.65 |
 OUT OF STOCK 34702Gates 98-02 Chevy Camaro / 99-09 Silverado / 03-06 Cadillac Escalade Thermostat Housing 2003-2004 Chevrolet Trailblazer EXT North Face 2003-2006 Chevrolet Trailblazer EXT LS / LT $100.49 |
 IN STOCK - LOW MMTS-VET-97LChevrolet LSX engines achieve impressive power in both naturally aspirated and forced-induction forms.With added power comes increased heat that necessitates a reliable and efficient cooling system.Protect your vehicle from overheating by upgrading to the Mishimoto racing thermostat.This thermostat ... Mishimoto Chevrolet/GMC LSX Racing Thermostat 2003-2004 Chevrolet Trailblazer EXT North Face 2003-2006 Chevrolet Trailblazer EXT LS / LT $86.84 |