Description: This Dynomite Diesel DDPCP4 - 421 is a top - notch remanufactured stock replacement CP4 injection pump. It's a perfect fit for 2011 - 2016 GM vehicles with the LML 6.6L Duramax engine. It directly replaces the old pump in your 6.6L LML, keeping the stock power and output. Part Number: DDPCP4 - 421. Superseded Part Number: DDP CP4 - 421. Features include stock power and output, being a stock replacement, a 1 - year warranty, and a refundable core charge.

Using this CP4 injection pump is easy. First, make sure your vehicle is a 2011 - 2016 GM with the LML 6.6L Duramax engine. Then, replace the old pump with this one as it's a direct replacement. For normal use, there's no need to make any special adjustments as it retains the stock power and output. When it comes to maintenance, check the pump regularly for any signs of damage or leaks. If you notice anything unusual, get it checked out right away. Remember, this product comes with a 1 - year warranty. If you have any issues during this period, contact the seller. Also, the core charge is refundable, so make sure to follow the return process to get your money back.