The output and reaction planetary pinion assemblies in '99-later 4L80-E transmissions frequently wear out and must be rebuilt or replaced. New replacement assemblies can be costly and the availability of quality aftermarket assembly components is limited. Sonnax offers a replacement parts kit [34880RK], which contains all the components needed to rebuild all four planet pinions in a single output or reaction carrier (planet gears not included). Individual components may also be purchased separately.

Kit restores proper operational clearances for worn or failed planet assemblies.
Kit allows for complete rebuild of all the planet assemblies in a carrier.
Individual components allow technicians to replace only the visibly worn components.

More From This Category

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 30.5 in. Length, 30SPL, For CHEVROLET CAPRICE 1989–1990, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.75 in. Bolt Pattern, 30.5 in. Length, 30SPL, For CHEVROLET CAPRICE 1989–1990, Each

$263.81

Sonnax High Capacity Direct Clutch Apply Piston Kit, Ford, 5R110W High Capacity, Each

Sonnax High Capacity Direct Clutch Apply Piston Kit, Ford, 5R110W High Capacity, Each

$383.44

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.25 in. Length, 30SPL, For JEEP GRAND CHEROKEE 1996–1998, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.25 in. Length, 30SPL, For JEEP GRAND CHEROKEE 1996–1998, Each

$202.00

TCI Input Shaft, Hardened, Vaccu Melt 300, Stock Carrier, Stock 26-Spline, For Ford, Automatic, C-4, Each

TCI Input Shaft, Hardened, Vaccu Melt 300, Stock Carrier, Stock 26-Spline, For Ford, Automatic, C-4, Each

$580.80