Replace the failed factory CP4 injection pump in your 2011-2016 GM 6.6L Duramax LML with a DDP NCP4-421 New CP4 Injection Pump. This brand new CP4 pump comes ready to install an dis backed by DDP’s 1-year unlimited mileage warranty.
- New Stock CP4
- No Core Required
- 1-Year Unlimited Mileage Warranty