MAHLE Coolant Thermostat 01-22 GM 6.6L Duramax LB7/LLY/LBZ/LMM/LML/L5P

Are you dealing with fluctuating coolant temps or overheating issues? The MAHLE TX50282D Coolant Thermostat is one of those small components that make a big difference in how your engine performs day to day. It’s designed to regulate coolant flow so your engine warms up quickly, maintains proper operating temperature, and stays protected whether you’re daily driving or pushing it hard under load. When a thermostat starts to stick open or closed, everything goes downhill, resulting in weak heater performance or even overheating, which can lead to serious engine damage. This MAHLE unit restores proper temperature control, giving you consistent performance and the peace of mind that your cooling system is functioning exactly as it should. Built to meet OEM standards, the TX50282D uses precision-calibrated internal components that open and close at the correct temperature to accurately regulate coolant flow. Like most MAHLE thermostats, it’s engineered for dependable thermal management and trusted worldwide for consistent performance. Constructed with high-quality, heat-resistant materials, it’s designed to handle constant temperature cycling and harsh engine conditions without sticking or failing prematurely. As a direct-fit OE replacement, it installs cleanly into the factory housing and delivers long-term durability, helping prevent overheating, reduce engine wear, and maintain overall cooling system efficiency.