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

Motive Gear Differential Master Bearing Kit, Timken, For Ford EXCURSION 2000–2005, Kit

Motive Gear Differential Master Bearing Kit, Timken, For Ford EXCURSION 2000–2005, Kit

$509.41

TCI Switch, Push Button, Momentary, Trans-Brake, Plastic, Red, 10 Amps, with Spiral Cord, Each

TCI Switch, Push Button, Momentary, Trans-Brake, Plastic, Red, 10 Amps, with Spiral Cord, Each

$228.26

TCI Input Shaft, Hardened, Vaccu Melt 300, Stock Carrier, Stock Spline, For Ford, Automatic, AOD, Non-Lockup, Each

TCI Input Shaft, Hardened, Vaccu Melt 300, Stock Carrier, Stock Spline, For Ford, Automatic, AOD, Non-Lockup, Each

$626.72

Motive Gear Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 28-spline Inner, 31.420 in. Length, Each

Motive Gear Axle Shaft, OEM Replacement, C-clip, 1541H Alloy Steel, 28-spline Inner, 31.420 in. Length, Each

$307.71

Motive Gear Differential Bearing Kit, Koyo, For JEEP WRANGLER 2018–2021, Kit

Motive Gear Differential Bearing Kit, Koyo, For JEEP WRANGLER 2018–2021, Kit

$444.38

Sonnax Pump Bushing, Chrysler, 40Te/S, 41Ae/Te/S, 42Le/Re/H/Rle

Sonnax Pump Bushing, Chrysler, 40Te/S, 41Ae/Te/S, 42Le/Re/H/Rle

$29.21