A common goal with GM 4L60-series transmissions is to increase pump volume or output, but a common problem is fluctuating pressure in Reverse. Sonnax pump spring spacer 77917-RV will preload the spring to increase pump output and stabilize the pressure.

Preloads the spring for increased pump output
Stabilizes pressure

More From This Category

Sonnax Rear Sun Gear Thrust Washer, Powerglide, Each

Sonnax Rear Sun Gear Thrust Washer, Powerglide, Each

$9.38

Sonnax Line Pressure Booster Kit, Ford, 4R100, E4Od, Each

Sonnax Line Pressure Booster Kit, Ford, 4R100, E4Od, Each

$54.43

TCI Shield Flexplate For Ford Trans W/Big Block 460

TCI Shield Flexplate For Ford Trans W/Big Block 460

$341.52

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 29 in. Length, 26SPL, For CHEVROLET S10 1983–1989, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 29 in. Length, 26SPL, For CHEVROLET S10 1983–1989, Each

$200.51