Vehicles with Ford C6 transmissions often display poor line rise, which results in erratic shift timing, Reverse shudder or direct clutch failure. This can be caused by excess wear at the inside diameter of the boost sleeve. This wear allows oil to leak past the boost valve to exhaust, resulting in poor or no line rise. Recover the hydraulic integrity of the boost circuit and restore proper line rise by installing Sonnax gas-ratio boost valve kit 36946-04K.

Gas-ratio kit restores OE boost pressure
Sleeve manufactured from highly wear-resistant aluminum
Hardcoat anodized aluminum valve combats premature wear
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

Trick Flow Valve Spring Retainer, Titanium, 7 Degree, 1.300 in. Outside Diameter, .675 in. Inside Diameter, Set of 16

Trick Flow Valve Spring Retainer, Titanium, 7 Degree, 1.300 in. Outside Diameter, .675 in. Inside Diameter, Set of 16

$530.70

MANLEY Valve Spring Retainer, Super 7 Degree, Tensile Max, 1.570 in. OD, Double, Set of 16

MANLEY Valve Spring Retainer, Super 7 Degree, Tensile Max, 1.570 in. OD, Double, Set of 16

$1,158.41

MANLEY Valve Spring Retainer, Titanium, 7 Degree, +.070 in. Height, 1.013 in. OD, Set of 32

MANLEY Valve Spring Retainer, Titanium, 7 Degree, +.070 in. Height, 1.013 in. OD, Set of 32

$1,068.02

COMP Cams Conical Valve Spring Kit GM LS1, LS2 and LS3 w/ Tool Steel Retainers

COMP Cams Conical Valve Spring Kit GM LS1, LS2 and LS3 w/ Tool Steel Retainers

$1,503.77

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.335 in. OD. Spring, .567 in. ID, 1.31 in. OD, .035 in. Thick, Black, Set of 16

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.335 in. OD. Spring, .567 in. ID, 1.31 in. OD, .035 in. Thick, Black, Set of 16

$188.60

MANLEY Valve Lock, 10 Degree, Conventional, .3715 in. Stem, LocCap, Each

MANLEY Valve Lock, 10 Degree, Conventional, .3715 in. Stem, LocCap, Each

$46.61