In GM 4L60-E, 4L65-E and 4L70-E units, the hammering effect of the 3-4 relay and/or 3-4 shift valves can cause the end plugs to wear, resulting in loss of 4th signal and/or D3 oil. Replace the worn OE end plugs with Sonnax 3-4 relay O-ringed end plug kit 77964-08K to restore hydraulic integrity and prevent loss of critical 4th signal and/or D3 oil.

O-Rings on the end plugs provide a positive seal
Restores hydraulic integrity at the end plug

More From This Category

TCI 700R4/4L60E 10-Vane Rotor Kit.

TCI 700R4/4L60E 10-Vane Rotor Kit.

$225.39

Motive Gear Differential Master Bearing Kit, Timken, For CHEVROLET BEL AIR 1955–1964, Kit

Motive Gear Differential Master Bearing Kit, Timken, For CHEVROLET BEL AIR 1955–1964, Kit

$265.62

Sonnax Heavy Duty Input Shaft, Ford, AODe, 4R70E/W, 4R75E/W, Each

Sonnax Heavy Duty Input Shaft, Ford, AODe, 4R70E/W, 4R75E/W, Each

$924.72

Sonnax Center Pump Gear Bushing, Chrysler, 68RFE, Each

Sonnax Center Pump Gear Bushing, Chrysler, 68RFE, Each

$26.54

Sonnax Stator Support Bushing, GM, 4L80E

Sonnax Stator Support Bushing, GM, 4L80E

$22.73