LMM Duramax Coolant Overflow Tank Kit

The SPELAB Coolant Overflow Tank Kit offers a practical upgrade for 2007.5-2010 LMM Duramax trucks, providing factory-harness level sensing, a sight glass, and a cleaner engine-bay layout. Constructed from durable aluminum alloy with a premium powder-coated finish, this tank is built for superior strength and corrosion resistance. It includes a billet anodized cap for enhanced durability and a premium aesthetic. Key features include an integrated low coolant level sensor that connects directly to the factory harness for accurate monitoring, and an overflow hose for proper coolant system functionality. A sight glass allows for quick and easy visual checks of coolant levels without needing to open the tank. This coolant overflow tank is specifically designed for the 2007.5-2010 Chevrolet Silverado 2500HD, 3500HD and GMC Sierra 2500HD, 3500HD models equipped with the 6.6L Duramax Diesel – LMM engine. It is important to confirm your specific Duramax engine code, as tanks for different generations (LB7/LLY/LBZ, LMM, LML) are not interchangeable and will not fit other platforms.