NENKUTEN Marine Carburetor 2-Barrel for Mercruiser 2.5L/3.0L 4-Cyl — Electric Choke, Linkage & Gasket Kit

High-quality replacement 2-barrel marine carburetor for Mercruiser 2.5L and 3.0L 4-cylinder engines with electric choke, long and short linkages, jets and gasket kit included.

This NENKUTEN marine carburetor is a complete aftermarket replacement designed to restore reliable fuel delivery and throttle response on compatible Mercruiser/Mercury 2.5L and 3.0L 4-cylinder sterndrive engines. Constructed from durable aluminum alloy, the unit ships pre-tested and includes necessary hardware—linkages, gaskets, jets and fittings—so you can install it with minimal extra parts. It replaces part numbers 3310-864940A01, 3310864940A01 and 8M0045397 and matches a base bolt pattern of 3 3/4 x 2 inches.

Will this carburetor fit my Mercruiser 2.5L or 3.0L engine?

Yes, the carburetor is engineered to fit most Mercruiser and Mercury 2.5L and 3.0L 4-cylinder sterndrive applications that use a 2-barrel carburetor. Confirm compatibility by checking your engine’s base bolt pattern and the original parts numbers.

• Matches base bolt pattern: 3 3/4 x 2 inches
• Replaces part numbers: 3310-864940A01, 3310864940A01, 8M0045397
• Designed for most 2-barrel 4-cylinder Mercruiser/Mercury sterndrives
• Pre-installed jets sized #70.9 for baseline tuning

How does the included hardware simplify installation?

This carburetor arrives with a comprehensive installation kit so you won’t need to source multiple small parts separately. It contains both a short linkage already attached and a longer unmounted linkage, plus gaskets and mounting nuts to fit typical installations.

• Comes with short and long throttle linkages for different setups
• Includes 3 gaskets and 7 mounting nuts for a secure seal
• Supplied needle valve spool, brass fitting, and replacement throttle arm
• Four extra jets and an air-filter bolt for tune-up flexibility

What performance and durability features does this carburetor offer?

The body is cast from aluminum alloy for corrosion resistance and light weight—important in marine environments. The electric choke helps with cold starts, while the pre-tested assembly reduces the risk of early failures from manufacturing defects.

• Aluminum alloy construction resists corrosion and wear
• Electric choke for improved cold-start drivability
• Factory-tested before shipment to ensure proper function
• Pre-installed jets provide a tuning baseline for common setups

What should I expect from warranty and support?

NENKUTEN backs this carburetor with a one-year warranty that covers manufacturing defects under normal use. If you encounter issues during installation or operation, reach out to the seller for guidance and warranty service options.

• One-year limited warranty from NENKUTEN
• Customer support available for installation or part questions
• Replacement hardware included to reduce downtime
• Return or warranty claim handled through the seller’s support channel

Who is this for: Boaters, marine mechanics and DIY engine tuners who own Mercruiser or compatible Mercury 2.5L and 3.0L 4-cylinder sterndrive engines and need a complete, tested carburetor replacement kit. It’s aimed at those who prefer a ready-to-install unit with linkages, gaskets and spare jets included, offering a practical route to restore throttle response and fuel metering without hunting down individual parts.