The XDP X-TRA Cool Water Pump Housing (Housing Only) XD684 will replace the damaged housing on your GM 6.6 Duramax LB7/LLY. Over time these housings are known to erode or leak due to cavitation or corrosion from the cooling system. This housing is a direct-fit replacement that meets the factory specifications and is sold as just the housing without the water pump.
Features:

• Includes New Seals
• Direct-Fit Replacement
• Meets Factory Specifications
• 2 Year/Unlimited Mileage

Notes:

• The harmonic balancer bolt will need to be removed to replace your water pump.
• The factory bolt is a torque-to-yield fastener (TTY) for one time use and must be replaced.