Sonnax 4L60-E, 4L65-E, 4L70-E 3-4 Relay O-Ringed End Plug Kit 77964-08K tools the 6T40 series of transmissions

the 6T40 series of transmissions upgraded to GEN3 with an off-axis chain driven pump incorporating a lube boost valve

Lowers build cost

Fits 1969-1986

TransGo High Performance Reprogramming Kit

Lock-up slip

Sonnax 4L60-E, 4L65-E, 4L70-E 3-4 Relay O-Ringed End Plug Kit 77964-08K tools the 6T40 series of transmissionsBrand: SONNAX Type: Valve Body Component Manufacturer Warranty: No Warranty Items Included: 5 pack O Ringed End Plugs Manufacturer Part Number: 777964 08K Country Region of Manufacture: United States Universal Fitment: Yes Vintage Part: No Performance Part: Yes 4L60 E, 4L65 E, 4L70 E Transmission 3 4 Relay O Ringed End Plug Kit Part No. 77964 08K 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