Sierra Remanufactured CarburetorsSierra Carburetors are precision remanufactured to meet or exceed OEM specifications. Sierra Carburetors have been 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 are replaced. Base gasket is included.• Sierra Part 18-7619-1• 4 Barrel• RochesterReplaces:• Mercruiser 1347-8460 A3• Mercruiser 1347-9142A2• Rochester 17059283• Rochester 17059298• Rochester 17081299• Rochester 17083522 4 Barrel Rochester Meets or exceeds OEM specs Base gasket included | Remanufactured Carburetor Rochester/Mercruiser, Part 18-7619-1