The XDP X-TRA Cool Water Pump (With Housing) XD671 will help restore operation to the cooling system in your GM 6.6 Duramax LBZ/LMM/LML. This water pump comes with the housing which is known to known to leak or erode due to cavitation and or corrosion in the cooling system. This is a direct-fit replacement that includes the necessary seals for a hassle-free installation. Each unit is manufactured to factory specifications giving you a factory fit and function.Features: Includes New SealsWater Pump and HousingHigh-Quality MaterialsDirect-Fit Replacement2 Year/Unlimited MileageSpecs: Housing Material: AluminumHub Height: 2.492 InchImpeller Material: PlasticImpeller Rotation: StandardImpeller Vane Quantity: 7Includes Back Housing: YesMounting Hole Quantity: 5Outlet Quantity: 2