The Mercruiser 4.3 Carburetor Accelerator Pump delivers a quick burst of fuel during sudden throttle acceleration, ensuring smooth engine response. It is specifically designed for marine applications to withstand harsh conditions. The pump helps prevent hesitation or stalling during rapid throttle changes.

The Mercruiser 4.3 Carburetor Accelerator Pump is designed for marine applications. Key specifications include:

- Size: Typically fits 2-barrel and 4-barrel carburetors (specific to Mercruiser 4.3L models)

- Grade: Marine-grade components for corrosion resistance

- Viscosity: Compatible with gasoline and ethanol-blended fuels (E10)

- Buoyancy: Not applicable (non-floating component)

- Material: Nitrile rubber diaphragm, stainless steel springs, and aluminum housing

- Operating Temperature Range: -20°F to 200°F (-29°C to 93°C)

- Pressure Rating: 4-6 psi (typical for carburetor systems)

- Compatibility: Works with Mercruiser 4.3L V6 engines (e.g., models with Rochester or Weber carburetors)