Mishimoto engineers know you love your Nissan which is why We've developed a line of Titan XD performance parts. A defective thermostat can result in engine overheating and potential internal damage. Improve the reliability of your 5.0L cooling system with the Mishimoto Titan XD 5.0L Cummins Low-Temperature Thermostat! This thermostat is designed as a direct-fit replacement for your factory unit. The Mishimoto thermostat has a lower activation temperature (180?F) compared to the factory thermostat (20?F). The lower activation temperature allows coolant to flow through the engine earlier, which reduces and maintains lower engine temperatures. This thermostat is ideal for use in warmer climates or under extreme towing/driving conditions. As with all our Titan XD performance parts, this thermostat includes the Mishimoto Lifetime Warranty, ensuring superior product quality and craftsmanship. Whether your Titan XD is factory or modified, trust Mishimoto and our line of Titan XD performance parts to keep your 5.0L Cummins cool.