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.

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.

After Diesel Tech removed the old water pump from our 6.0L, there wasn’t much to the install of the Bulletproof water pump. The four factory bolts are reused to hold the new water pump in, and a ...