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Looking for aftermarket parts to modify or upgrade your 2003 Toyota 4Runner with thermostats? At Tunersports.com we carry a huge selection of the top name brand performance thermostat parts and accessories.
 OUT OF STOCK 33877Gates 97-99 Acura CL / 91-96 Dodge Stealth / 95-99 Honda Accord / 91-99 Mitsu 3000GT Thermostat 2003-2009 Toyota 4Runner Limited / Sport / SR5 $58.89 |
 OUT OF STOCK 33878Gates 03-08 Infiniti FX45 / 06-10 M45 / 05-06 Q45 180 Deg Thermostat 2003-2009 Toyota 4Runner Limited / Sport / SR5 $48.36 |
 IN STOCK - LOW MMTS-4RUN40-03A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 2003-2024 Toyota 4Runner 4.0L cooling system with a Mishimoto Low-Temperature Racing Thermostat and housing! This thermostat is designed as a direct-fit replacement for your aged st... Mishimoto 2003+ Toyota 4Runner 4.0L Low-Temperature Racing Thermostat 2003-2009 Toyota 4Runner Sport 2003-2024 Toyota 4Runner Limited / SR5 $105.50 |
 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 2003-2009 Toyota 4Runner Limited / Sport / SR5 $86.84 |