The UMI Performance adjustable extended length rear lower control arms replace the factory rear lower arms on 1978 to 1996 GM B-body cars such as the Chevrolet Caprice and Impala SS, Buick LeSabre and Roadmaster, and Pontiac Bonneville and Catalina. The tubular steel arms use a spherical rod end on one end and a polyurethane bushing on the other to remove deflection and improve rear axle control, and the adjustable length lets the arm be set to correct axle position. They are finished in black powder coat and sold as a pair. UMI Performance manufactures these control arms in the USA.
Specifications:
- Rear lower control arms, extended length and adjustable
- Tubular steel construction
- Spherical rod ends and polyurethane bushings
- Black powder coat finish
- Sold as a pair
- Made in the USA
- Part number: 3614-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
- 1986 Buick LeSabre
- 1987 Buick LeSabre
- 1988 Buick LeSabre
- 1991 Buick Roadmaster
- 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
- 1978 Pontiac Bonneville
- 1979 Pontiac Bonneville
- 1980 Pontiac Bonneville
- 1981 Pontiac Bonneville
- 1978 Pontiac Catalina
- 1979 Pontiac Catalina
- 1980 Pontiac Catalina
- 1981 Pontiac Catalina
FAQ
What vehicles do these control arms fit?
They fit 1978 to 1996 GM B-body cars, including the Chevrolet Caprice and Impala SS, Buick LeSabre and Roadmaster, and Pontiac Bonneville and Catalina. See the vehicle applications list above and match your year.
What is the benefit of the rod end and adjustable design?
The spherical rod end removes bushing deflection for tighter rear axle control, and the adjustable length lets the arm be set to correct the axle position, which is useful on lowered and performance built cars.
How do these arms install?
They replace the factory rear lower control arms in the stock mounting locations and are sold as a matched pair.
What is the difference between part number 3614-B and 3614-R?
Part number 3614-B is finished in black powder coat and 3614-R is finished in red powder coat. The control arms are otherwise identical.

