GM 4T60 and 4T60-E units commonly display negative shift characteristics that can be traced to excess wear at the 1-2 and 2-3 accumulator piston pin bores. Slipping, flares, and soft or inconsistent shifts often result, followed by burnt 2nd and 3rd clutches. Extreme cases will cause a loss of 2nd, 3rd and/or 4th Gears. Restore hydraulic control and banish sloppy shifting by reconditioning the pin bore and installing Sonnax oversized accumulator pin 84573-01K.

Salvages accumulator pistons
Oversized pin creates tight hydraulic seal with OE piston
Starter kit 84573-02K includes reamer for boring piston pin bore

More From This Category

PHC Clutch Bearing, Release, For Ford N Series 6.7 Ltr, HO7C N1418, LF06S, 1/86-12/91 1986-1991, Each

PHC Clutch Bearing, Release, For Ford N Series 6.7 Ltr, HO7C N1418, LF06S, 1/86-12/91 1986-1991, Each

$28.70

Sonnax Servo Apply Lever, Fd C6, Each

Sonnax Servo Apply Lever, Fd C6, Each

$95.11

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.5 in. Length, SPL, ForD EXPLORER 1995–2002, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.5 in. Length, SPL, ForD EXPLORER 1995–2002, Each

$196.54

Motive Gear Differential Bearing Kit, Timken, For CHEVROLET CAMARO 2010–2015, Kit

Motive Gear Differential Bearing Kit, Timken, For CHEVROLET CAMARO 2010–2015, Kit

$231.01