TBI 40hp Power Up Kit Injector Gaskets O-ring For GM Chevrolet 2.8 4.3 5.0 5.7L

Type: TBI 40hp Injector Spacer Kit. 1x TBI 40hp Injector Spacer Kit （As pictured）. For 1986-1995 twin injector TBI 2.8L, 4.3L V6 5.0L, 5.7L V8 engines. For Any GM twin injector TBI model 200 and 220. 【Improved Air Flow】: Includes instructions for modifying your TBI base and throttle shaft for better air flow.