Marine 4 Cyl Rochester Mercarb 3310-864940A01 Carburetor For Mercruiser 2.5L3.0L

Marine Carburetor for Mercruiser 2.5L and 3.0L Engines

This Rochester Mercarb 3310-864940A01 style marine carburetor is a replacement fuel delivery unit for Mercruiser 2.5L and 3.0L four-cylinder marine engines, metering air and fuel for reliable starting and smooth operation on the water.

Overview

This marine carburetor is built as a replacement for the Rochester Mercarb 3310-864940A01 application on Mercruiser 2.5L and 3.0L four-cylinder engines. It meters fuel and air into the intake to keep idle steady and throttle response predictable under marine loads. This carburetor suits boat owners replacing a worn or fouled unit on a Mercruiser four-cylinder powerplant.

Built For Performance

• Configured for four-cylinder Mercruiser 2.5L and 3.0L marine engines
• Rochester Mercarb 3310-864940A01 cross-reference for straightforward matching
• Marine-grade castings and seals suited to wet, high-vibration environments
• Mechanical fuel metering for consistent idle and acceleration
• Direct replacement footprint for the original carburetor mounting pattern

Fits These Machines

• for Mercruiser 2.5L four-cylinder marine engines
• for Mercruiser 3.0L four-cylinder marine engines
• Applications referencing Rochester Mercarb 3310-864940A01

On-The-Job Use

• Replacing a fouled or worn carburetor on a Mercruiser 2.5L engine
• Restoring smooth idle and throttle response on a 3.0L sterndrive
• Routine fuel system service on older runabouts and bowriders
• Getting a stored or winterized boat back on the water

Specs At A Glance

Good To Know

Q: Do I need to adjust this carburetor after installation? A: Marine carburetors typically need idle speed and mixture set after mounting, and linkage should be checked against the original unit. Follow the engine service manual for the correct settings.

Q: Will this work on both the 2.5L and 3.0L Mercruiser engines? A: This carburetor is listed for the Rochester Mercarb 3310-864940A01 application covering both four-cylinder displacements. Confirm your engine code and existing part number before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.