The Fleece CP3 Conversion Hardware Kit – No Pump (FPE-LML-CP3-NP) is a high-quality solution designed specifically for 2011-2016 GM Duramax LML engines. This kit allows you to replace the factory CP4 injection pump, which is known for reliability issues, with the more robust and dependable CP3 pump (sold separately). The conversion improves fuel system longevity and performance by eliminating the failure-prone CP4. Engineered for a straightforward installation, the Fleece kit includes all necessary hardware and components—excluding the CP3 pump itself—to ensure a seamless upgrade. It’s an ideal choice for Duramax owners seeking increased reliability and peace of mind without compromising on power or efficiency.