Carburetor for Honda TRX 400 TRX400EX Sportrax FourTrax TRX400 ATV 16100-HN1-A43

Carburetor for Honda TRX 400 TRX400EX Sportrax FourTrax

This carburetor for Honda TRX 400 models replaces OEM part number 16100-HN1-A43, delivering the air and fuel metering needed to keep your ATV running clean and strong.

Overview

This carburetor is a direct-fit replacement for Honda TRX 400 ATVs, engineered to meter fuel and air for consistent combustion across the powerband. It replaces worn or clogged units on TRX400EX Sportrax and FourTrax models so your machine idles smoothly and accelerates without hesitation. Ideal for riders and mechanics restoring dependable trail performance.

Built For Performance

• Constructed from corrosion-resistant cast aluminum for long service life
• Precision-machined venturi and jets for consistent air-fuel mixing
• Throttle valve and linkage designed for smooth response
• Sealed float bowl to resist fuel leaks and contamination
• Direct replacement for OEM part 16100-HN1-A43
• Compatible with standard pump gasoline

Fits These Machines

• for Honda TRX400EX Sportrax
• for Honda TRX400 FourTrax
• for Honda TRX 400 ATV models

On-The-Job Use

• Trail riding and off-road recreation
• Restoring rough-running or hard-starting ATVs
• Routine carburetor replacement and rebuild projects
• Farm and utility ATV maintenance

Specs At A Glance

Good To Know

Q: Will this carburetor fit my TRX400EX? A: It is designed for Honda TRX 400 and TRX400EX models, but confirm your year and serial number before ordering.

Q: Does it need adjustment after installation? A: Idle and air-fuel settings may need minor tuning to match your altitude and riding conditions.

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