New Starter Solenoid Relay Switch Fit for Honda 35850-HN7-003 TRX 300 350 500

Starter Solenoid Relay Switch for Honda TRX 300 350 500

This starter solenoid relay switch is a replacement part that cross-references OEM number 35850-HN7-003, built to engage the starter motor on Honda TRX 300, 350, and 500 models. It routes battery current to the starter when the start button is pressed.

Overview

This starter solenoid relay switch for Honda TRX 300 350 500 models replaces a worn relay that no longer engages the starter. The solenoid switches the heavy current feed from the battery to the starter motor on command from the start circuit. It is aimed at owners and mechanics keeping older Honda ATVs running without paying dealer prices.

Built For Performance

• Cross-references OEM part number 35850-HN7-003 for a direct-fit replacement
• Robust contact points stand up to repeated starting cycles
• Enclosed body keeps out mud, moisture, and trail debris
• Consistent coil performance for reliable engagement every time
• Factory-style terminals make wiring straightforward

Fits These Machines

• for Honda TRX 300 models
• for Honda TRX 350 models
• for Honda TRX 500 models
• for Honda models using OEM relay 35850-HN7-003

On-The-Job Use

• Replacing a solenoid that fails to send current to the starter
• Electrical repairs on older Honda TRX ATVs
• Preventive maintenance before a riding season
• Workshop service on 300, 350, and 500 class machines

Specs At A Glance

Good To Know

Q: Will this fit every year of the TRX 300, 350, and 500? A: Fitment can vary by year and trim, so match your machine against OEM number 35850-HN7-003 before ordering. Checking your existing relay part number is the safest way to confirm.

Q: Can I install this relay myself? A: Yes, it is a common DIY job on these ATVs and typically involves disconnecting the battery, unbolting the old relay, and swapping the terminals. Take a photo of the wiring first so reassembly is simple.

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