16700-Hr3-A21 Fuel Pump Assembly For Honda Trx420 Fourtrax 420/Fm Trx500 Trx520

Fuel Pump Assembly for Honda

This replacement fuel pump assembly delivers reliable fuel flow and pressure to the engine, referencing part number 16700-Hr3-A21.

Overview

This fuel pump assembly is designed to provide consistent fuel pressure and volume for optimal engine performance. Built for utility ATV owners, this fuel pump assembly resolves issues related to engine bogging, hard starting, and loss of power under load. Installing this high-quality fuel pump assembly restores correct air-fuel mixtures and ensures smooth throttle response across rough terrains.

Built For Performance

• Advanced internal turbine impeller provides quiet, stable fuel delivery.
• Upgraded electrical terminals resist corrosion and maintain continuous power.
• In-tank design includes fuel strainer to filter out tank debris.
• Direct replacement fit matches factory mounting flanges.

Fits These Machines

• for Honda TRX420 Fourtrax 420
• for Honda TRX420 FM
• for Honda TRX500
• for Honda TRX520

On-The-Job Use

• Replacing a clogged or failing fuel pump assembly in the fuel tank.
• Restoring proper fuel pressure for electronic fuel injection systems.
• Ensuring dependable utility vehicle operation during farm or trail work.

Specs At A Glance

Good To Know

Q: Does this assembly include a new fuel strainer? A: Yes, a pre-installed fuel strainer filter is included to protect the new pump from sediment and fuel tank contamination. Cleaning the tank prior to installation is recommended.

Q: What are common symptoms of a failing ATV fuel pump? A: Sputtering at high speeds, difficulty starting when the engine is warm, or a complete lack of starting noise from the tank are strong indicators that the fuel pump needs replacement.

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