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

Sonnax 3-4 Clutch Boost Spring & Retainer Assembly, GM, Th700-R4/4L60/E/65E 1988-2011, Each

Sonnax 3-4 Clutch Boost Spring & Retainer Assembly, GM, Th700-R4/4L60/E/65E 1988-2011, Each

$15.31

TCI Gerotor Stator Supp Tube Ringl

TCI Gerotor Stator Supp Tube Ringl

$475.07

TCI Automatic Transmission Input Shaft, High Performance, 300M, 30-spline, GM, 700R4, 4L60E, Each

TCI Automatic Transmission Input Shaft, High Performance, 300M, 30-spline, GM, 700R4, 4L60E, Each

$1,574.21