While DIY replacement of the CP4 injection pump and associated fuel system components is possible, I wouldn't exactly call it friendly. The most challenging part of working on automobiles I've ...

Denso has announced it will begin to produce fuel injectors and fuel injection pumps for gasoline engines at the end of 2005 in its new company -- DENSO (GUANGZHOU NANSHA) Co., LTD. - established ...

GM used the pump on its 6.6-liter LGH and LML Duramax diesel engines through 2016, opting to use the Denso HP4 pump on the L5P Duramax, one of the best Duramax engine versions, starting in 2017.