UMI Performance 3634 rear sway bar is a direct bolt-on design that decreases body roll for a more controlled handling experience on the 1978-1996 GM B-Body platform. The beefy 1.125 inch diameter solid sway bar bolts directly to UMI arms, and also to factory arms with the optional 3636 bracket kit. The mounting location is exactly as designed by GM, and high quality hardware is included. This sway bar does not fit wagons. It is made in the USA and finished in a durable black powder coat.
Specifications:
- 1.125" diameter solid steel sway bar
- Direct bolt-on design
- Bolts to UMI arms, or factory arms with the optional 3636 bracket kit
- Mounting location as designed by GM
- High quality hardware included
- Does not fit wagon models
- Sold as each
- Black powder coat finish
- Made in the USA
- Part number: 3634-B
Vehicle Applications:
- 1978 Buick LeSabre
- 1979 Buick LeSabre
- 1980 Buick LeSabre
- 1981 Buick LeSabre
- 1982 Buick LeSabre
- 1983 Buick LeSabre
- 1984 Buick LeSabre
- 1985 Buick LeSabre
- 1992 Buick Roadmaster
- 1993 Buick Roadmaster
- 1994 Buick Roadmaster
- 1995 Buick Roadmaster
- 1996 Buick Roadmaster
- 1978 Chevrolet Caprice
- 1979 Chevrolet Caprice
- 1980 Chevrolet Caprice
- 1981 Chevrolet Caprice
- 1982 Chevrolet Caprice
- 1983 Chevrolet Caprice
- 1984 Chevrolet Caprice
- 1985 Chevrolet Caprice
- 1986 Chevrolet Caprice
- 1987 Chevrolet Caprice
- 1988 Chevrolet Caprice
- 1989 Chevrolet Caprice
- 1990 Chevrolet Caprice
- 1991 Chevrolet Caprice
- 1992 Chevrolet Caprice
- 1993 Chevrolet Caprice
- 1994 Chevrolet Caprice
- 1995 Chevrolet Caprice
- 1996 Chevrolet Caprice
- 1994 Chevrolet Impala
- 1995 Chevrolet Impala
- 1996 Chevrolet Impala
- 1977 Pontiac Bonneville
- 1978 Pontiac Bonneville
- 1979 Pontiac Bonneville
- 1980 Pontiac Bonneville
- 1981 Pontiac Bonneville
- 1977 Pontiac Catalina
- 1978 Pontiac Catalina
- 1979 Pontiac Catalina
- 1980 Pontiac Catalina
- 1981 Pontiac Catalina
FAQ
What vehicles does this sway bar fit?
It fits the 1978 to 1996 GM B-Body platform, including the Buick LeSabre and Roadmaster, Chevrolet Caprice and Impala SS, and Pontiac Bonneville and Catalina. It does not fit wagons.
Does this sway bar fit wagons?
No. This sway bar does not fit wagon models.
What does it bolt to?
It bolts directly to UMI arms, and to factory arms with the optional 3636 bracket kit. The mounting location is exactly as designed by GM and high quality hardware is included.
What is the difference between the 3634-B and 3634-R?
The 3634-B has a black powder coat finish and the 3634-R has a red powder coat finish. The sway bar is otherwise identical.

