The F-trim valve in Allison® 1000/2000/2400 ('00–'05) units is controlled by a PWM solenoid that continuously oscillates the valve. When the valve and sleeve become worn from constant motion the TCC PCS pressure is allowed to cross leak, or escape to exhaust, inhibiting the valve from stroking against the spring and causing converter apply concerns, TCC surge, TCC slippage, code P0741 and overheating. When wear becomes severe it can cause the valve to stick, causing converter release problems as well as apply problems, dependent on where in the bore the valve sticks. Reconditioning the bore and installing Sonnax oversized F-trim valve kit 37000-30K replaces the entire valve train to restore F-trim valve function to normal operation.

Hardcoat anodized valve combats premature wear
Annular grooves on the valve help center it in the bore to reduce future side-load wear

More From This Category

MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia, Set of 8

MANLEY Valve, Custom, Titanium, .3415 in. Stem Dia, Set of 8

$2,293.03

COMP Cams Valve, Sportsman, Stainless Steel, Exhaust, For Chevrolet Small Block, 1.600 in. Head, 5.111 in. Length, Each

COMP Cams Valve, Sportsman, Stainless Steel, Exhaust, For Chevrolet Small Block, 1.600 in. Head, 5.111 in. Length, Each

$33.56

MANLEY Valve, Race Master, Exhaust, Bead Loc, 1.575 in. Head Dia, 0.3125 in. Stem Dia, 5.125 in. Length, For Chrysler HEMI, Each

MANLEY Valve, Race Master, Exhaust, Bead Loc, 1.575 in. Head Dia, 0.3125 in. Stem Dia, 5.125 in. Length, For Chrysler HEMI, Each

$50.05

MILODON Valves, Exhaust, Race, Stainless Steel, 1.625 in. Diameter, For Chevrolet, Small Block, 350, 383, 400, Set of 8

MILODON Valves, Exhaust, Race, Stainless Steel, 1.625 in. Diameter, For Chevrolet, Small Block, 350, 383, 400, Set of 8

$414.64

MANLEY Valve, Street Master, Intake, 2.25 in. Head Dia, 0.3415 in. Stem Dia, 5.244 in. Length, BBC, Set of 8

MANLEY Valve, Street Master, Intake, 2.25 in. Head Dia, 0.3415 in. Stem Dia, 5.244 in. Length, BBC, Set of 8

$299.37