Rochester Rebuilt Carburetor (REC3304-9354A2) by Recmar. The job of a carburetor is to supply an internal combustion engine with an air/fuel mixture. With the right tuning modifications, a Rochester can be a good race carburetor with an excellent throttle response. Carburetors control the airflow through their Main bore, and the resulting mixture enters the engine via the intake valve. The vacuum created by the piston's downstroke draws fuel into the carburetor. As air accelerates through the bore, it creates a low-pressure area and increases the velocity of the intake air. Because of the rapid acceleration, the air and fuel mix and vaporize. Key Features: RECMAR meets the needs of the boating community. Top-quality Rochester Rebuilt Carburetor. High quality at an affordable price. Ideal for replacement and maintenance. It performs admirably for an extended period. Approved marine-grade product. Genuine RECMAR component. Specifications: Brand: RECMAR Quantity: 1 Product Condition: Brand New SKU: REC3304-9354A2 UPC: 8.43542E+12 Weight: 9.93 LBS Unit of Measure: EA Manufacturer Part Number (MPN): REC3304-9354A2