GM 6T40 third generation transmissions may exhibit multiple line pressure and converter-related problems due to excess wear in the main pressure regulator bore. Wear at the inboard end allows PCS (pressure control solenoid) fluid to cross leak into converter feed or vise-versa resulting in multiple shift related concerns. Wear at the narrow spool separating line pressure and suction can result in low line pressure, burnt clutches, and shift complaints. Installing Sonnax drop-in pressure regulator valve kit 144510-17K restores proper line pressure control for renewed shift feel and performance. The valve has lengthened spool diameters to operate in unworn sections of the pump bore and adds valve stability to prevent future wear.
The Sonnax valve kit is designed as a quick and inexpensive repair for pumps showing moderate signs of wear or as a preventative measure to extend the life of the pump.

Extended valve lands for better sealing at critical control areas
Hardcoat anodized aluminum valves combat premature wear
Annular grooves help center valve in sleeve to reduce future side-load wear
New calibrated pressure regulator spring matches OE calibration
Drop-in Zip Valve™ parts install quickly and easily

Learn More About Zip Valve™ Drop-In Repairs

More From This Category

MANLEY Valve, Race Flo, Exhaust, 1.725 in. Head Dia, 0.3715 in. Stem Dia, 5.35 in. Length, BBC, Each

MANLEY Valve, Race Flo, Exhaust, 1.725 in. Head Dia, 0.3715 in. Stem Dia, 5.35 in. Length, BBC, Each

$47.58

MANLEY Valve, Titanium, Intake, Bead Loc, 2.205 in. Head Dia, 0.3135 in. Stem Dia, 5.19 in. Length, For Chevrolet LS7, Set of 8

MANLEY Valve, Titanium, Intake, Bead Loc, 2.205 in. Head Dia, 0.3135 in. Stem Dia, 5.19 in. Length, For Chevrolet LS7, Set of 8

$3,037.65

MANLEY Valve, Severe Duty, Intake, 2.35 in. Head Dia, 0.3415 in. Stem Dia, 5.61 in. Length, Each

MANLEY Valve, Severe Duty, Intake, 2.35 in. Head Dia, 0.3415 in. Stem Dia, 5.61 in. Length, Each

$78.54

MANLEY Valve, Titanium, Intake, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.14 in. Height, Set of 8

MANLEY Valve, Titanium, Intake, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.14 in. Height, Set of 8

$2,421.90

Sonnax Boost Valve Kit, Ford, Fd C6, Diesel Ratio, Each

Sonnax Boost Valve Kit, Ford, Fd C6, Diesel Ratio, Each

$85.70

MANLEY Valve, Titanium, Intake, Bead Loc, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Height, Each

MANLEY Valve, Titanium, Intake, Bead Loc, 2.125 in. Head Dia, 0.3415 in. Stem Dia, 5.44 in. Height, Each

$302.72