Aeromotive BB Chevy Belt Drive Fuel System 17243 - Designed for alcohol carbureted cars, this systems brings together matched components including the BBC Belt Drive Kit (P/N 17241) and our Double Adjustable Bypass Regulator (P/N 13209), designed to work together to maximize performance and consistency. It guarantees precise, accurate, repeatable and reliable fuel delivery and pressure control unmatched by any other alcohol carbureted fuel system. Methanol and Ethanol compatible. Adjust idle fuel pressure separate from the high-RPM setting, no jets, pills or other valves required. System includes: BBC Belt Drive Kit (P/N 17241) and Double Adjustable Bypass Regulator (P/N 13209). Fittings sold separately.