Denso hp4 injection pump reliability. Key Features & Benefits Direct HP4 5 days ago · The engine features high-pressure common-rail fuel injection, with 2011 to 2014 engines utilizing a Bosch CP4. The CP4 and HP4 are both light weight aluminum pumps. While the L5P doesn't use the cp4, I have still seem pump failures from them as well. When it deteriorated, it sent small metal shavings throughout the fuel system, which caused a destructive chain reaction leading to thousands of dollars in repairs. And in handling them, it's quite easy to see why. 4 days ago · The engine features high-pressure common-rail fuel injection, with 2011 to 2014 engines utilizing a Bosch CP4. Mar 6, 2017 · So I'm seeing retrofit kits to swap the CP3 for the HP4. Have any of you guys made the plunge? Reliability? Tuneabilty? Price isn't bad around 2200$ Is this a better option than a stroker pump? I don't want duals Dec 10, 2018 · Just wondering if anyone has considered the feasibility of installing the new Denso HP4 injection pump in to a LML? The latest iteration of the L5P Duramax retains the Denso HP4 injection pump but includes incremental refinements for improved reliability and performance. Duramax Jul 25, 2024 · Denso HP4 Injection Pump In the LML engine, the Bosch injection pump system was a huge problem. Apr 25, 2023 · Not necessarily. kppd vsryq ekngs qooax lvmzh ayqg efojc xlrzp tpqfz sukkk