JAVENYIMAN Carburetor for Honda Foreman TRX450 TRX400 TRX350 – 32mm Intake, Alloy Direct-Fit

This JAVENYIMAN carburetor is a direct-fit replacement designed to restore proper air–fuel mixture and reliable performance for compatible Honda Foreman, TRX450, TRX400 and TRX350 ATVs.

When an aging or damaged carburetor leaves your ATV running rough, hard to start, or behaving inconsistently, swapping in a correctly sized replacement is often the fastest way to regain dependable operation. This JAVENYIMAN unit matches the dimensions, inlet/outlet diameters, and functional features required by a range of Honda four-wheelers, offering a durable alloy build and precision ports to help the engine achieve the intended air–fuel ratio.

Which Honda models will this carburetor fit?

This replacement is engineered to fit multiple Honda Foreman, TRX450, TRX400 and TRX350 variants across model years. Confirm compatibility against your ATV’s model and year before purchasing to ensure correct fitment.

• Foreman/TRX450: TRX450FE, TRX450FM (2002–2004), TRX450ES (1998–2001), TRX450S (1998–2001)
• Foreman/TRX400: TRX400FW and Foreman 400 (1997–2004)
• Rancher/FourTrax 350 series: TRX350TM, TRX350TE, TRX350ES, TRX350FE (2000–2006; some TE/TM 2004–2006)
• Check your factory service manual or compare mounting points and port diameters before installation.

How does this carburetor improve engine performance?

By restoring the correct air-to-fuel delivery, the carburetor helps the engine run more smoothly through idle, throttle response, and load conditions. The precision-machined passages and matching diameters reduce inconsistent fuel flow and allow combustion to occur closer to factory tuning.

• Proper air–fuel ratio support for steadier idle and better throttle response
• Optimized internal passages to minimize flooding or lean conditions
• Durable alloy construction resists wear and corrosion under typical off-road use

What are the critical specifications and dimensions?

Knowing the intake and filter-side diameters ensures the carburetor will connect to your existing hoses and airbox without modification. The listed specs correspond to common OEM sizes for the compatible Honda models.

• Intake-side inner diameter: 32 mm; outer diameter: 40 mm
• Air-filter-side inner diameter: 50 mm; outer diameter: 54 mm
• Constructed from high-strength alloy for extended service life

What should I expect during installation and maintenance?

Installation typically follows original mounting and linkage locations; basic mechanical skills are sufficient. After fitting, a routine inspection and minor tuning (idle and mixture adjustments) may be required to match local fuel and altitude conditions.

• Direct-replacement design to use existing throttle linkage and intake mounts
• May require idle and mixture tuning for optimal performance
• Recommended to replace fuel lines, clamps, and gaskets if worn

Who is this product for? This JAVENYIMAN carburetor is intended for owners, mechanics, and restoration enthusiasts who need a reliable replacement for worn or damaged carburetors on compatible Honda Foreman, TRX450, TRX400 and TRX350 ATVs. It’s especially useful for riders restoring older machines, preparing an ATV for tougher off-road use, or anyone seeking to correct fueling issues without sourcing rare OEM parts. If you’re unsure about fit or setup, consult a technician or compare these dimensions to your existing carburetor before ordering.