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 Governor Support, Machined, Aluminum, Bearings Include, GM, Powerglide, Each

TCI Governor Support, Machined, Aluminum, Bearings Include, GM, Powerglide, Each

$232.63

Wilwood Bearing Cone, Hub, Outer

Wilwood Bearing Cone, Hub, Outer

$15.76

Sonnax Extension Housing Bushing, GM 6L90 Commodore VE-VF LSA, Pack Of 5

Sonnax Extension Housing Bushing, GM 6L90 Commodore VE-VF LSA, Pack Of 5

$83.30

MANLEY Connecting Rod Pin Bushing, Bronze, .910 in. OD, .828 in. ID, .845 in. Length, Each

MANLEY Connecting Rod Pin Bushing, Bronze, .910 in. OD, .828 in. ID, .845 in. Length, Each

$23.94