We have reduced the pump's efficiency loss by adding six new precision processes during the assembly of our pumps equating to increased pump volume, better fuel mileage, longer life and smoother operation Every pump incorporates a dual ball bearing cartridge with a larger swashplate and a longer stroke that retains safe, reliable pump operation by maintaining the required rotational freedom of the piston socket for an axial piston pump The Adrenaline version of our HPOP provides more oil than most truck configurations will require. In most instances, the stock output version will be more oil than you need as it is slightly larger in volume than a stock OEM pump. Everything that we have ever found to cause a failure or weakening of the stock pump has been addressed in all of our pumps. - Even the OEM housing has a design flaw that the new billet housing addresses.