Transmissions listed above may exhibit insufficient line rise, resulting in delayed engagement, slipping in Reverse, poor shift quality, erratic line pressure and burnt clutches. These troubles can often be caused by wear in the OE pressure regulator valve bore and/or boost sleeve, which allows the pressure escape that provokes driveability concerns. Reconditioning the bore and installing Sonnax oversized pressure regulator and boost valve kit 63741-01K eliminates pressure loss and revives line rise and shift quality in all ranges. Hardcoat anodized aluminum pressure regulator valve combats premature wear.

More From This Category

MANLEY Valve, Titanium, Intake, 2.08 in. Head Dia, 0.3415 in. Stem Dia, 5.04 in. Height, Each

MANLEY Valve, Titanium, Intake, 2.08 in. Head Dia, 0.3415 in. Stem Dia, 5.04 in. Height, Each

$302.72

COMP Cams Valve, Sportsman, Stainless Steel, Intake, For Chevrolet Small Block, 2.020 in. Head, 5.011 in. Length, Set of 8

COMP Cams Valve, Sportsman, Stainless Steel, Intake, For Chevrolet Small Block, 2.020 in. Head, 5.011 in. Length, Set of 8

$246.30

MANLEY Valve, Extreme Duty, Exhaust, 2.06 in. Head Dia, 0.3415 in. Stem Dia, 6.7 in. Length, Gen II, Each

MANLEY Valve, Extreme Duty, Exhaust, 2.06 in. Head Dia, 0.3415 in. Stem Dia, 6.7 in. Length, Gen II, Each

$139.15

MANLEY Valve, Titanium, Intake, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.64 in. Height, Set of 8

MANLEY Valve, Titanium, Intake, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.64 in. Height, Set of 8

$2,564.57

MANLEY Valve, Race Flo, Exhaust, 28.5 mm Head Dia, 5.5 mm Stem Dia, 102.70 mm Length, For Honda, Each

MANLEY Valve, Race Flo, Exhaust, 28.5 mm Head Dia, 5.5 mm Stem Dia, 102.70 mm Length, For Honda, Each

$50.05

MANLEY Valve, Severe Duty, Exhaust, 1.88 in. Head Dia, 0.3715 in. Stem Dia, 5.354 in. Length, BBC, Set of 8

MANLEY Valve, Severe Duty, Exhaust, 1.88 in. Head Dia, 0.3715 in. Stem Dia, 5.354 in. Length, BBC, Set of 8

$607.34