Sierra Marine 18-7639 Carburetor (Remanufactured)

Sierra 18-7639 remanufactured MercCarb 2 barrel carburetor. For Mercruiser V-8 GM engines. Replaces Mercruiser part # 3310-864943A01. MercCarb carburetors are easily identifiable with one idle mixture screw on the base between the two throats. Factory re-manufactured carburetors from Sierra are completely disassembled, re-calibrated and re-engineered to maximize fuel efficiency and performance. All carburetors are flow tested throughout the entire throttle range. Fuel mixture and idle settings are pre-set to ensure that only minor idle and choke adjustments are necessary during installation. All bases are resurfaced and throttle shaft bushings replaced.