M MATI Fuel Cock Petcock Assembly for Honda TRX ATVs — Replacement 16950-HM8-003 with Lever, Hose & Hardware

M MATI Fuel Cock Petcock with Lever Assy is a ready-to-install replacement fuel valve assembly engineered to fit a wide range of Honda ATV models from TRX250 through TRX650.

This OEM-style petcock kit includes the assembled fuel valve, lever, hardware and fuel hose components needed to restore fuel flow control on compatible Honda FourTrax and Foreman machines. It replaces part number 16950-HM8-003 and several cross-reference numbers, and ships with clamps, bolts and tank collars so you can complete the swap without hunting for extra parts.

Will this petcock fit my Honda ATV model?

The M MATI valve is specified to replace Honda part 16950-HM8-003 and listed equivalents, and it fits many TRX250, TRX350, TRX400, TRX420, TRX450, TRX500 and TRX650 variants across model years. Check the vehicle model and year list to confirm compatibility before purchase.

• Direct cross-reference: 16950-HM8-003 and replacements 16950-HP5-601, 16950-HM7-003, 16950-HN7-003, 16950-HN2-003, 16950-HP0-A01
• Compatible TRX families include Recon, Sportrax, Fourtrax, Rancher, Foreman, Rubicon and Rincon
• Model-year coverage ranges from mid-1990s through the mid-2010s depending on model

What comes in the package and how complete is the kit?

The kit contains the petcock assembly and all small parts required to mount and route fuel from the tank. You receive the valve and lever plus hose and hardware so the unit can be installed without aftermarket adaptors.

• Petcock Assy x1 and Petcock Lever x1
• Lever Screw x1, Fuel Tube x1 and Tube Clamp x2
• Fuel Tank Setting Collar x2 and Flange Bolt x2 for secure installation

How durable and serviceable is this replacement valve?

The assembly is built to match the form and function of the original fuel valve, with corrosion-resistant hardware and a replaceable hose included. M MATI provides a one-year service window for product issues so you have recourse if a defect appears.

• Materials designed to withstand fuel exposure and standard ATV vibration
• Includes hose and clamps to prevent leaks when installed correctly
• One-year support for manufacturing concerns; contact seller for assistance

How do I install the petcock and what should I watch for?

Installation is straightforward for anyone comfortable with basic ATV maintenance: drain the tank, unbolt the old petcock, swap the collar and bolts, connect the new hose and clamps, and test for leaks. Use hand tools and avoid overtightening plastic fittings to prevent damage.

• Drain or work with a near-empty tank to reduce fuel spillage
• Match the supplied collars and flange bolts to the tank flange before tightening
• After installation, check all connections for a tight seal under light pressure

Who is this for: This M MATI fuel cock assembly is aimed at owners and mechanics of Honda ATVs who need a direct-fit replacement petcock to restore reliable fuel control. It suits riders maintaining older TRX models or shops keeping common Honda FourTrax, Rancher, Foreman, Sportrax and Rincon machines in service. If you want an all-in-one swap with hardware included and validated cross-reference numbers, this kit provides the parts and the backing to get your ATV back on the trail.