Flowmaster Catalytic Converters from the brand you know and the brand you trust!

Flowmaster’s metallic substrate catalytic converters are intended for severe duty/high temperature applications and are engineered to meet or exceed both OEM and USEPA standards for performance and longevity. Protected by a 25,000 mile performance/emissions warranty as well as a 5-year/50,000 mile case warranty, these 49-state cats are designed for long lasting durability and performance.

49 State Catalytic Converters are NOT for sale / use in California

Application:

• 1977-1977 BUICK CENTURY CUSTOM V8 6.6
• 1975-1976 BUICK ELECTRA LIMITED V8 7.5
• 1975-1975 BUICK ELECTRA CUSTOM V8 7.5
• 1976-1976 BUICK ELECTRA 225 V8 7.5
• 1975-1975 BUICK LESABRE BASE V8 7.5
• 1975-1976 BUICK LESABRE CUSTOM V8 7.5
• 1975-1976 BUICK RIVIERA BASE V8 7.5
• 1975-1975 BUICK RIVIERA GS V8 7.5
• 1976-1976 BUICK RIVIERA SPORT V8 7.5
• 1976-1976 BUICK RIVIERA SR V8 7.5
• 1977-1978 BUICK RIVIERA BASE V8 6.6
• 1978-1978 BUICK RIVIERA LXXV ANNIVERSARY EDITION V8 6.6