LMM Duramax Cooling System

Cooling System Parts for Your LMM Duramax Silverado & Sierra
Maintain peak performance and prevent overheating in your 2007.5-2010 LMM Duramax with upgraded cooling system components. From heavy-duty radiators and thermostats to coolant filtration and reservoirs, these parts are built to handle the demands of towing, performance tuning, and extreme conditions. We also carry a PPE fan clutch delete nut for owners running an aftermarket electric fan setup. Ensure long-term reliability and protect your engine with proven cooling solutions for your LMM Duramax.

Complete LMM Duramax Cooling System Parts Directory

• Radiators: Direct-fit and aluminum performance radiators built to handle more heat than stock.
• Coolant Hoses - Pipes - Connectors: Silicone hose kits and connectors to stop leaks and keep coolant flowing.
• Water Pumps: Direct-fit replacement water pumps to restore reliable coolant circulation.
• Thermostats & Housings: OE-spec and performance thermostats to dial in your operating temperature.
• Coolant Filtration: Filtration systems to catch debris before it damages your water pump and radiator.
• Coolant Block Off: Block-off plates to permanently seal an unused block heater port.
• Coolant Reservoirs & Caps: Replacement degas tanks and caps to stop leaks from a cracked factory bottle.