Sierra 18-7238 Carburetor Kit The Sierra 18-7238 Carburetor Kit is interchangeable with the following: Holley R-80312A, R-80312-1A, Mallory 9-37624, OMC 986796, 3854020, 3854347, Volvo Penta 3854020. Each Sierra product meets or exceeds the original equipment part it replaces. Sierra Carburetor Kit Meets or exceeds the original equipment quality Sierra part number: 18-7238 Interchangeable with the following: Holley R-80312A, R-80312-1A, Mallory 9-37624, OMC 986796, 3854020, 3854347, Volvo Penta 3854020