Sonnax 200-4R Extension Housing Bushing and Seal Kit

Quality extension housing bushing and seal for the GM 200-4R four-speed overdrive automatic transmission. This Sonnax component is manufactured to OEM specifications for guaranteed fitment and reliable performance in all 200-4R applications. Essential for any professional rebuild of the transmission used in the legendary Buick Grand National, GNX, and other classic GM performance vehicles.

Compatible with all 1981-1990 200-4R transmissions in Buick Grand National, Regal, GNX, T-Type, 1982-1984 Corvette, Monte Carlo SS, and other GM vehicles. Professional quality ensures consistent performance and long service life.