The servo return spring is the source of many "mystery" band failures caused by inconsistent servo release and weak springs prone to collapse. Sonnax servo piston return spring 28133 for GM Powerglide units is a lighter-than-stock spring ideal for low line pressure applications of 175 psi or less.

More From This Category

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 28 in. Length, 28SPL, For BUICK MONTEREY 1992–1995, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 28 in. Length, 28SPL, For BUICK MONTEREY 1992–1995, Each

$200.31