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The BD Diesel 5R110 transmission kit for 2003–2004 Ford 4WD strengthens internal components and lubrication to support heavier use. It includes machined pressure plates and pistons, added lube circuits, upgraded planetaries and bearings, and an aluminum deep pan that raises oil capacity. These changes tighten clutch packs, improve shift response and increase the transmission’s ability to withstand higher torque levels.
BD Diesel Transmission - 2003-2004 Ford 5R110 4wd
