Improve your RB engine’s cooling performance with the Mishimoto Thermostat Assembly for RB26, RB25, and RB20 engines—available now at Terra Firma Automotive. Engineered for enthusiasts who demand reliability and efficiency, this racing thermostat is an essential upgrade for anyone serious about maintaining ideal operating temperatures under high-performance conditions. Built with the same commitment to precision that defines Mishimoto’s renowned cooling products, this unit is designed to open at 68°C, allowing coolant to circulate earlier and helping your engine manage heat more effectively during aggressive driving or track use.
Whether you’re installing a new radiator or refreshing your RB platform's cooling system, this Mishimoto thermostat offers a perfect blend of quality and value. The stamped aluminum construction ensures long-term durability without compromising on weight or fitment. It's designed specifically to work seamlessly with all RB-series engines—RB26DETT, RB25DET, and RB20DET—making it a versatile solution for a wide range of Nissan performance platforms, including Skylines and Stageas.
At Terra Firma Automotive, we focus on offering trusted performance parts that elevate your driving experience. As a recognized leader in OEM and aftermarket support for Japanese performance vehicles, we are proud to stock Mishimoto components that meet the high expectations of today’s tuners and racers. Choose Terra Firma for your next thermostat upgrade and keep your RB engine running cooler, longer, and more efficiently. Don’t settle—cool with confidence.
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