The XDP X-TRA Cool Water Pump (Pump Only) XD670 replaces the failed or leaking water pump on your GM 6.6 Duramax LBZ/LMM/LML. This is a direct-fit replacement and includes new seals for installation. This water pump is manufactured to meet OEM specifications and provides you with a factory fit and function. This is the pump only, no housing included.Features: New Seals IncludedDirect-Fit ReplacementMeets OEM Specifications2 Year/Unlimited MileageSpecs: Housing Material: AluminumHub Height: 2.492 InchImpeller Material: PlasticImpeller Rotation: StandardImpeller Vane Quantity: 7Mounting Hole Quantity: 6