Looking for aftermarket parts to modify or upgrade your 2003 Toyota Tundra with thermostats? At Tunersports.com we carry a huge selection of the top name brand performance thermostat parts and accessories for your Tundra.
Whether you have a 2003 Toyota Tundra in Base to SR5 trim we have you covered. We have 5 thermostats available to mod your Tundra. All parts have free shipping to the Continental US 48 States.
 OUT OF STOCK 33867Gates Various Models of Lexus / Mitsubishi / Toyota Thermostat 2000-2004 Toyota Tundra Base / SR5 $38.91 |
 IN STOCK - LOW 33877Gates 97-99 Acura CL / 91-96 Dodge Stealth / 95-99 Honda Accord / 91-99 Mitsu 3000GT Thermostat 2000-2005 Toyota Tundra Limited / SR5 $49.16 |
 OUT OF STOCK 33878Gates 03-08 Infiniti FX45 / 06-10 M45 / 05-06 Q45 180 Deg Thermostat 2000-2005 Toyota Tundra Limited / SR5 $39.27 |
 IN STOCK MMTS-TC-05LThe Mishimoto racing thermostat will promote greater cooling efficiency throughout your engine and will significantly lower high engine temperature produced by modified and upgraded turbo applications.Once the engine is fully warmed up the Mishimoto racing thermostat will open up at a lower temperat... Mishimoto 05-10 Scion tC 155 Deg F / 68 Deg C Racing Thermostat 2000-2004 Toyota Tundra Base / Limited / SR5 $73.73 |
 IN STOCK MMTS-Y61-97The Mishimoto racing thermostat for the 1997-2013 Nissan Patrol Y61 will promote greater cooling efficiency throughout your engine. The Mishimoto racing thermostat will open up at a lower temperature than standard thermostats, allowing the coolant to flow through the engine sooner thus reducing and ... Mishimoto 97-13 Nissan Patrol Y61 Racing Thermostat 2000-2009 Toyota Tundra Base / Limited / SR5 $73.73 |