The Ford 6R140 transmission varies line pressure between 70 and 170 psi. This works well for stock trucks but for heavy-duty use and higher horsepower applications this may be insufficient. BD's PressureLoc for the 6R140 is a solenoid replacement that overrides the transmission line pressure to maximize output enabling the transmission to handle higher horsepower. The BD PressureLoc will allow the transmission to produce 250-300psi, substantially increasing clutch holding power which prevents clutch slippage and premature clutch failure.