Conventional GM Powerglide servos are not well-supported. At high apply pressures or with a worn servo pin bore, the servo piston is side-loaded in the case, causing friction and binding of the piston. The unique Sonnax supported servo pin and cover kit 28821-19K eliminates friction caused by side-loading and ensures the servo piston will apply and release without binding.

Unique design eliminates piston binding that causes unexplained band failure
Low-drag O-ring prevents high gear & release oil pressure bore leaks
Compatible with all OE and aftermarket Powerglide servo pistons

More From This Category

RTS Performance Transmission Super-R Rebuild Kit Ford C4,1970-on, Raybestos & Kolene Kit

RTS Performance Transmission Super-R Rebuild Kit Ford C4,1970-on, Raybestos & Kolene Kit

$702.00

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.563 in. Length, 27SPL, For CHEVROLET AVONDALE 1994–1997, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.563 in. Length, 27SPL, For CHEVROLET AVONDALE 1994–1997, Each

$210.02

Sonnax Zip Kit®, Toyota/Lexus U660E, U660F, Each

Sonnax Zip Kit®, Toyota/Lexus U660E, U660F, Each

$544.81

MANLEY Connecting Rod Pin Bushing, Bronze, .975 in. OD, .929 in. ID, .975 in. Length, Each

MANLEY Connecting Rod Pin Bushing, Bronze, .975 in. OD, .929 in. ID, .975 in. Length, Each

$22.80

Motive Gear Differential Master Bearing Kit, Timken, Suits Ford 9 Inch Diff, 2.891" x 1.781" LM102910/LM102949, Std Pinion Support

Motive Gear Differential Master Bearing Kit, Timken, Suits Ford 9 Inch Diff, 2.891" x 1.781" LM102910/LM102949, Std Pinion Support

$217.80

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 29.125 in. Length, 27SPL, For JEEP GRAND CHEROKEE 1994–1998, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 29.125 in. Length, 27SPL, For JEEP GRAND CHEROKEE 1994–1998, Each

$200.05