Revitalize the functionality of your vehicle's power seat with our OEM-grade Power Seat Motor to Transmission Coupling. This direct replacement for GM part numbers 20614175 and 20113451 is designed for an array of GM vehicles, guaranteeing an exact fit and flawless function for specific models like Buick Regal T-Type/Grand National, Oldsmobile Cutlass/442/Supreme, Pontiac Grand Prix/SJ, and Chevrolet Monte Carlo/SS/El Camino. The clear/white high-resin plastic construction not only ensures the durability needed for a seat adjustment component but also acts as a safety measure, designed to shear under excessive load to prevent damage to the seat transmission or motor. Installation is straightforward, requiring just three screws to secure the motor and coupling in place. Choose this Made in the USA component for your power seat repair needs and benefit from a part that meets and exceeds OEM quality standards, ensuring that your power seat functions smoothly and reliably. Primarily Fits the Following A & G Body Models (with Factory Power Seat): 1980 - 1986 Buick: Regal / T-Type / Grand National 1980 - 1986 Oldsmobile: Cutlass / 442 / Supreme 1980 - 1985 Pontiac: Grand Prix / SJ 1980 - 1986 Chevrolet: Monte Carlo / SS / El Camino 1978 - 1986 Rolls-Royce and Bentley Please Note: A design change took place in most 1987 & newer models which utilized 3 separate electric motors instead of one which replaced the transmission & coupling set up. This coupling is intended for models with one electric motor set up. How to Remove & Replace the Power Seat Coupling： This is basically and R and R situation. There are 3 (7 MM head) screws holding the motor on to the metal frame. You want to remove the 1 in back first as it is hard to reach, Then the front bottom, Then the top screw. At this point the motor is loose. Remove any broken debris from the motor. (Cleaning is suggested). Then remove any broken debris from the transmission. (again Cleaning is suggested). Install the coupling on the motor shaft. The coupling is designed to fit tight. If it was loose it would eventually egg out with use. Slide motor back in to alignment. The power seat coupling shear pin will have to be rotated to align with the power seat transmission shaft. Now that you have Both joined together the screw installation can begin. Install the lower front screw hand tight. Then do the same to the top screw, again just snug so the rear screw will be able to be aligned. Tighten the rear screw. Tighten the top front screw. Tighten the Bottom screw. You have now successfully installed the new power seat coupling shear pin.