On/Off Lockup Kit - 1999-2003 Ford 4R100

Product description
 
NOTICE: This kit requires removal of the transmission for installation of the internal parts
Includes New On/Off Valve assembly to replace OEM PWM valve assembly in pump
Converts long soft pulse (PWM) lock-up to short crisp On/Off lockup, with longer converter life
Convenient drop in valves, No special tooling or machining necessary!
Should be used in conjunction with 1600410 kit
Installation recommendation: Experienced technician