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 Solenoid (Nh), Ford, 6R140, Each

Sonnax Solenoid (Nh), Ford, 6R140, Each

$138.47

Sonnax Low/Reverse Retaining Ring, Ford, 5R110W, Each

Sonnax Low/Reverse Retaining Ring, Ford, 5R110W, Each

$21.03

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.5 in. Length, SPL, ForD EXPLORER 1995–2002, Each

Motive Gear Axle Shaft, 1541 Manganese, 5x4.5 in. Bolt Pattern, 30.5 in. Length, SPL, ForD EXPLORER 1995–2002, Each

$196.54

Motive Gear Differential Pinion Bearing Kit, Koyo, Suit 9 Inch Ford, Large Daytona Pinion Bearing

Motive Gear Differential Pinion Bearing Kit, Koyo, Suit 9 Inch Ford, Large Daytona Pinion Bearing

$130.26