300 CFM Two Barrel Holley Carburetor. Power valve blow-out protection for trouble free operation. Single inverted flare fuel inlet. Dichromate finish. Features 5" air horn and 30cc accelerator pump. Meets flooding and back-fire requirements set by U.S. Coast Guard.
Flow tested throughout the entire throttle range. Fuel mixture and idle settings are preset only minor idle and choke adjustments are needed. Fits: mcm 120/2.5L & 140/3.0L. Replaces: Mercruiser Stern Drive 3310-860070a2, 3310-806077a2, 1389-9562a1, 1389-9350a2, 1389-8490a2, 3310-806078a2, 1389-815396a2.
Designed and calibrated for optimum marine performance in small-block and big-block V8 engines with Performer RPM, RPM Air-Gap and Torker II manifolds and with Performer manifolds on large cubic-inch engines.