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

MANLEY Connecting Rod Pin Bushing, Bronze, .952 in. OD, .867 in. ID, .935 in. Length, Set of 8

MANLEY Connecting Rod Pin Bushing, Bronze, .952 in. OD, .867 in. ID, .935 in. Length, Set of 8

$182.30

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

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

$205.61

TCI 95-'97 4L60E Front Pump Assembly w/ Billet Rotor Kit

TCI 95-'97 4L60E Front Pump Assembly w/ Billet Rotor Kit

$1,170.26