4F50N Upgraded 1-2 & 2-3 Capacity Modulator Valve Springs by Superior

More from Shift Superior, this capacity modulator valve spring kit for Ford 4F50N automatic transmissions, 04-UP, made in the USA by Superior Transmission Parts. The 1-2 and 2-3 springs are meant to firm up soft shifts, and one kit contains enough springs for three transmissions.

Part Number: K084