Vehicles with 4R70W 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 driveability concerns. Worn pressure regulator valve spools allowing pressure escape are a common problem in these units. Installing Sonnax main pressure regulator valve 76948-01 restores normal line pressure operation in all ranges.
If bore is excessively worn, install Sonnax oversized pressure regulator and boost valve kit 76948-16K.

Hardcoat anodized aluminum valve combats premature wear
Annular grooves help center valve in bore to reduce side-loading

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

MANLEY Valve, Titanium, Intake, 2.25 in. Head Dia, 0.3415 in. Stem Dia, 5.35 in. Length, Each

MANLEY Valve, Titanium, Intake, 2.25 in. Head Dia, 0.3415 in. Stem Dia, 5.35 in. Length, Each

$318.84

MANLEY Valve, Race Master, Exhaust, 1.88 in. Head Dia, 0.3415 in. Stem Dia, 5.522 in. Length, BBC, Each

MANLEY Valve, Race Master, Exhaust, 1.88 in. Head Dia, 0.3415 in. Stem Dia, 5.522 in. Length, BBC, Each

$47.58

MANLEY Valve, Titanium, Exhaust, 1.84 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Length, Each

MANLEY Valve, Titanium, Exhaust, 1.84 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Length, Each

$318.84