Wagler WCPC66125 Billet Water Pump

Fix the water pump issues in your 2001-2005 GM 6.6L Duramax LB7/LLY with the Wagler WCPC66125 Billet Water Pump. The impeller on the factory water pump often separates from the shaft as a result, the water pump cannot continue to move coolant and...

HSP Factory Replacement Coolant Tank

Replace the unsightly, yellowed, and brittle plastic factory coolant reservoir in your 2001-2007 GM 6.6L Duramax with this sleek custom aluminum HSP Factory Replacement Coolant Tank. HSP CNC cuts and bends each tank for an excellent fit in the stock...

HSP LB7/LLY Billet Thermostat Housing Kit With Coolant Return

Eliminate the obstructive factory coolant hose routing on your 2001-2005 GM 6.6L Duramax with the HSP LB7/LLY Billet Thermostat Housing Kit With Coolant Return. With a CNC billet aluminum construction, this upper housing thermostat kit makes extra...

Merchant Automotive 10541 Water Pump Kit With Cover

Upgrade the water pump in your 2001-2005 GM 6.6L Duramax LB7 & LLY with the Merchant Automotive 10541 Water Pump Kit With Cover. Merchant Automotive modifies the factory pump by TIG welding the impeller and drive gear to the shaft for increased...

Dorman 902-901 Coolant Bypass Pipe

The Dorman 902-901 Coolant Bypass Pipe for your 2001-2005 GM 6.6L Duramax is re-engineered to address the common failure points in the OE product. The Dorman Thermostat Bypass Pipe has improved durability and has been coated to resist corrosion...

Bostech WP01100 Water Pump

The Bostech WP01100 Water Pump for your 2001-2005 GM 6.6L Duramax is built from top quality materials and is produced under strict quality control guidelines. This pump is built to meet or exceed OE standards and is a bolt-on replacement...

PPE 116454025 Coolant Overflow Tank

The tank will hold up to one gallon of coolant. Hand cut aluminum material provides more efficient cooling properties. This tank replaces the location of your secondary battery and plastic water overflow tank. Use in conjunction with Battery Remount...

Mishimoto Silicone Hose Kit MMHOSE-CHV-01D

  Mishimoto silicone radiator hoses designed for the 2001-2005 Chevrolet 6.6L Duramax 2500 are designed as a direct replacement for your OEM rubber hoses. Our silicone hoses are crafted using a combination of high-grade silicone and...

Alliant Water Pump AP63562

OEM Part #: 97216136, 19113733, 251-674, 252-723, 252-383 Note: Includes mounting gaskets       Prop 65 WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov

Flex-a-lite 284 Direct-Fit Dual Electric Cooling Fans

The Flex-a-lite 284 Direct-Fit Dual Electric Cooling Fans for your 2001-2005 GM 6.6L Duramax provides you with a high performance bolt-on cooling upgrade for your Duramax powered pickup. By replacing your stock clutch fan assembly with this dual...

Mishimoto MMRAD-DMAX-01 Aluminum Performance Radiator

  Mishimoto has released a performance aluminum radiator for the 2001-2005 Chevrolet/GMC 6.6L Duramax. Mishimoto performance radiators are manufactured from high-quality aircraft-grade aluminum with a 100% aluminum core and polished end tanks...

Dorman 603-125 Coolant Reservoir

Replace the old cracked Coolant Reservoir on your 2001-2007 GM 6.6L Duramax with the Dorman 603-125 Coolant Reservoir. Dormans Engine Coolant Recovery Tank is designed for enduring use. It resists the expansion and cracking that extreme...

Merchant Automotive 10540 Water Pump

Upgrade the water pump in your 2001-2005 GM 6.6L Duramax LB7 & LLY with the Merchant Automotive 10540 Water Pump. Merchant Automotive modifies the factory pump by TIG welding the impeller and drive gear to the shaft for increased durability...

Dorman 82597 Coolant Reservoir Cap

The Dorman 82597 Coolant Reservoir Cap is a direct replacement for your 2001-2007 GM 6.6L Duramax. Dorman Engine Coolant Recovery Tank Caps are constructed of high-quality plastic. They protect the cooling system by providing a tight seal against the...

PPE Silicone Upper & Lower Coolant Hose Kit (2001-2005)

The PPE Silicone Upper & Lower Coolant Hose Kit replaces the worn or leaky factory coolant hoses in your 2001-2005 GM 6.6L Duramax LB7/LLY. The factory coolant hose T fittings are molded hose or made out of plastic and are prone to cracking at...