Replace your original equipment 2 Barrel MerCarb/Mercruiser Carburetor with electric choke and front fuel inlet.
Base Bolt pattern is: 3 3/4 X 2 inches.
This unit is available for all 8 cylinder 5.0L/305 CID or 5.7L/350 CID V8 engines originally equipped with the 2 Barrel MerCarb.
Make your boat run the way it should!!! Replace that problematic MerCarb with a Real Rochester GM quality part for Mercury Marine applications.