This is a brand - new Bosch CP3 injection pump designed specifically for 2006 - 2010 GM LBZ & LMM 6.6L Duramax engines. It's a direct drop - in replacement for the stock injection pump, making installation a breeze. The pump comes with a new snout O - ring, ensuring a tight seal. One great feature is that there's no core charge or core to return. However, if you plan to install it in a 2001 - 2005 (LB7 or LLY) engine, you'll need to scale the fuel pressure regulator appropriately. It comes with a 1 - year limited warranty (parts only). Part Number: FPE - DMAX - CP3.

Using this Bosch CP3 injection pump is straightforward. First, make sure your engine is a 2006 - 2010 GM LBZ or LMM 6.6L Duramax. It's a direct drop - in replacement, so you can simply take out the old pump and put this new one in its place. When installing, check that the new snout O - ring is properly seated to prevent any fuel leaks. If you're using it in a 2001 - 2005 (LB7 or LLY) engine, remember to adjust the fuel pressure regulator as needed. For maintenance, regularly check the pump for any signs of wear or damage. Keep the area around the pump clean to avoid debris getting into it. If you notice any issues, refer to the 1 - year limited warranty (parts only) for support.