For Honda Carburetor 2005 2006 2007 2008 TRX400 EX Sportrax Carb 16100-HN1-A43

Carburetor for Honda TRX400 EX Sportrax

This carburetor assembly replaces the original unit on 2005 through 2008 Honda TRX400 EX Sportrax models, cross-referencing 16100-HN1-A43, and meters the fuel and air mixture the engine needs to run cleanly.

Overview

This carburetor is a direct-fit replacement for the 2005 to 2008 Honda TRX400 EX Sportrax, built to restore proper fuel delivery when the stock unit wears out or clogs. The 16100-HN1-A43 cross-reference makes it easy to confirm the correct carburetor for Honda TRX400 EX owners before ordering. Riders, mechanics, and shops working on these sport quads will find it a practical swap for a tired or damaged original carburetor for Honda.

Built For Performance

• Direct replacement for the factory carburetor on 2005 to 2008 TRX400 EX Sportrax models
• Cross-references OEM part number 16100-HN1-A43 for easy verification
• Cast body and machined internal passages for consistent fuel metering
• Complete assembly with throttle valve and fuel inlet already fitted
• Sealed gaskets and O-rings to reduce air leaks and lean conditions
• Bolt-on installation using the factory intake and throttle connections

Fits These Machines

• for Honda TRX400 EX Sportrax 2005
• for Honda TRX400 EX Sportrax 2006
• for Honda TRX400 EX Sportrax 2007
• for Honda TRX400 EX Sportrax 2008

On-The-Job Use

• Replacing a clogged or worn carburetor on a trail-ridden Sportrax
• Restoring smooth idle and throttle response after long storage
• Servicing quads used for yard work, hunting, and weekend riding
• Shop repairs where a complete drop-in carburetor saves rebuild time

Specs At A Glance

Good To Know

Q: Will this carburetor need tuning after installation? A: Most installations benefit from setting the idle speed and air screw after fitting, since altitude and temperature affect the mixture. Start with the factory baseline settings and adjust from there.

Q: Can I install this myself without a shop? A: Basic hand tools are usually enough to swap a carburetor on this model. If you are not comfortable with fuel lines and throttle cables, a qualified mechanic can complete the job quickly.

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