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

ARP Bolts, Hex Head, Chromoly Steel, Black Oxide, 3/8-24 in. RH Thread, .750 in. UHL, Set of 5

ARP Bolts, Hex Head, Chromoly Steel, Black Oxide, 3/8-24 in. RH Thread, .750 in. UHL, Set of 5

$23.07

Manley Valve TI Brodix, Suit Nissan SR20, , 2.4, Set of 8

Manley Valve TI Brodix, Suit Nissan SR20, , 2.4, Set of 8

$2,603.48

Dakota Digital Gauge Kit, 1994- 96 For Chevrolet Caprice/ For Impala SS, Analog, Black Background, Alloy Style Face, White Display

Dakota Digital Gauge Kit, 1994- 96 For Chevrolet Caprice/ For Impala SS, Analog, Black Background, Alloy Style Face, White Display

$2,074.80