Sonnax Boost Valve Kit - Ford 4R75W Transmission

Sonnax Boost Valve Kit for the Ford 4R75W transmission. This shift improvement kit recalibrates the valve body to deliver firmer, more consistent shifts while reducing slippage and heat buildup that causes premature clutch pack failure.

Includes detailed installation instructions with color-coded diagrams. No special tools required beyond standard valve body rebuild equipment. Proven to extend transmission life by reducing clutch apply times.

Fitment: 2004-2010 Ford F-150, 2005-2010 Ford Mustang, 2003-2011 Ford Crown Victoria, 2003-2011 Mercury Grand Marquis, 2003-2006 Ford Expedition

Brand: Sonnax