Manufacturer Part Number: 77964-08K, 7796408K, 77964-08K, 4L60-E, 4L65-E, 4L70-E
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 these 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
Made from durable materials that are designed to withstand the rigors of daily driving and harsh weather conditions.