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 Super Bearing Kit, Koyo, For BUICK CENTURION 19711972, Kit

Motive Gear Differential Super Bearing Kit, Koyo, For BUICK CENTURION 19711972, Kit

$207.80

Autometer Co2 Retrofit Kit For Ts2 & Ts5, Includes Ab10K Bottle Kit (Single Acting), Dedenbear

Autometer Co2 Retrofit Kit For Ts2 & Ts5, Includes Ab10K Bottle Kit (Single Acting), Dedenbear

$704.09

Motive Gear Differential Master Bearing Kit, Timken, For DODGE RAM 1500 2002–2010, Kit

Motive Gear Differential Master Bearing Kit, Timken, For DODGE RAM 1500 2002–2010, Kit

$334.82

Sonnax Planetary Rebuild Kit, GM, Powerglide, Each

Sonnax Planetary Rebuild Kit, GM, Powerglide, Each

$210.13

Motive Gear Differential Master Bearing Kit, Timken, For DODGE NITRO 2007–2011, Kit

Motive Gear Differential Master Bearing Kit, Timken, For DODGE NITRO 2007–2011, Kit

$411.37