Vehicles with Ford 4R70E, 4R70W, 4R75E, 4R75W and AODE transmissions often have erratic line pressure, poor line rise and/or throttle-sensitive buzz. This can result in harsh or soft shifts and band/clutch failure as well as other drivability concerns. Worn pressure regulator valve spools allowing pressure escape are a common problem in these units. Installing Sonnax main pressure regulator valve 76948-09 restores normal line pressure operation in all ranges.
If bore is excessively worn, install Sonnax oversized pressure regulator and boost valve kit 76948-17K. Sonnax valve replaces both styles of OE valve found in '96-later units.

Hardcoat anodized aluminum valve combats premature wear
Annular grooves help center valve in bore to reduce side-loading
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

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