The B&M Shift Improver Kit the easiest way to get the stout performance youve always wanted out of your automatic transmission And you get two modes of performance to select from: Heavy Duty, or Street/Strip. Its our least expensive and simplest to install kit. All you need are a few dollars and some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Just ask the thousands of satisfied customers that have installed one in their transmissions!
Application:
- 1971-1973 BUICK CENTURION Automatic Trans 3-Speed Trans THM400 Trans
- 1973-1977 BUICK CENTURY Automatic Trans 3-Speed Trans THM400 Trans
- 1965-1981 BUICK ELECTRA Automatic Trans 3-Speed Trans THM400 Trans
- 1970-1981 BUICK ESTATE WAGON Automatic Trans 3-Speed Trans THM400 Trans
- 1965-1967 BUICK GRAN SPORT Automatic Trans 3-Speed Trans THM400 Trans
- 1970-1972 BUICK GS Automatic Trans 3-Speed Trans THM400 Trans
- 1965-1981 BUICK LESABRE Automatic Trans 3-Speed Trans THM400 Trans
- 1973-1977 BUICK REGAL Automatic Trans 3-Speed Trans THM400 Trans
- 1965-1978 BUICK RIVIERA Automatic Trans 3-Speed Trans THM400 Trans
- 1978-1978 BUICK SKYHAWK Automatic Trans 3-Speed Trans THM400 Trans
- 1965-1969 BUICK SKYLARK Automatic Trans 3-Speed Trans THM400 Trans
- 1965-1967 BUICK SPECIAL Automatic Trans 3-Speed Trans THM400 Trans
