This is the Plastic Connector "Coupling" that resides between the electric motor and the transmission drive gear housing. It is designed to be a safety shear pin but commonly breaks mainly due to age. It is designed to snap if there is too much resistance on the seat track instead of cracking the plastic transmission housing or putting to much strain on the electric motor to a point where it overheats or blows a fuse. Chances are if you hear the motor running when you activate the switch and the seat does not move that this coupling has failed. Molded in Clear or White Plastic with a Stronger Resin but still will snap in the event of a problem. It is a much better quality plastic with a higher resin base. Title: Power Seat Motor to Transmission Coupling Coupler Application: 1980 - 1986 for : Regal or T-Type or Grand National 1980 - 1986 for : Cutlass or 442 or 1980 - for : Grand Prix or SJ 1980 - 1986 for : or or Attention: Our design was copied incorrectly resulting in potential seat transmission failures which forced us to change the color of ours to more of a clearer plastic instead of white so that distinguish ours from the . If you can not grab with both hands and will your power seat transmission. A design change took place in most 1987 and newer models which utilized 3 separate electric motors instead of one which replaced the transmission and coupling set up. This coupling is intended for models with one electric motor set up. Replaces for 20614175 20450945 is interchangeable with 20614175 20113451 is interchangeable with 20450945 Colour:Transparent Material:ABS Package Contents: 1 x coupler replacement Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.