Starter Relay Solenoid For Honda Fourtrax 300 TRX300 4x4 1988~2000 35850-HC4-000

Starter Relay Solenoid for Honda Fourtrax 300 TRX300 4x4

This starter relay solenoid is a direct-fit replacement for Honda Fourtrax 300 TRX300 4x4 ATVs, cross-referencing OEM part number 35850-HC4-000 to deliver reliable starting power to the electric starter circuit.

Overview

This starter relay solenoid serves as the high-current switch between the battery and the starter motor on Honda Fourtrax 300 TRX300 4x4 models. When the start button is pressed, the solenoid closes the circuit and sends full battery power to crank the engine. It is built for riders and mechanics replacing a worn or failed relay on 1988 through 2000 Fourtrax 300 machines.

Built For Performance

• Direct cross-reference to OEM part number 35850-HC4-000 for straightforward replacement
• Heavy-duty internal contacts designed to handle repeated high-current starting loads
• Sealed housing helps resist mud, dust, and water splash common in ATV use
• Plug-and-play terminal layout matches the original connector on Fourtrax 300 models
• Rated for 12-volt ATV electrical systems
• Compact body fits the factory mounting location without modification

Fits These Machines

• for Honda Fourtrax 300 TRX300 4x4 (1988-2000)
• for Honda Fourtrax 300 TRX300 (1988-2000)

On-The-Job Use

• Replacing a solenoid that clicks but will not crank the engine
• Restoring reliable electric start on trail and farm ATVs
• Routine electrical maintenance on older Fourtrax 300 machines
• Repairing starting issues caused by burned or pitted relay contacts

Specs At A Glance

Good To Know

Q: How do I know if my starter relay solenoid is bad? A: A common sign is a single loud click with no engine crank when the start button is pressed, or no click at all. Testing for battery voltage at the starter terminal while cranking helps confirm the relay is the fault.

Q: Does this solenoid replace the factory relay directly? A: Yes, it is designed to cross-reference OEM part 35850-HC4-000 and mount in the factory location with the original wiring connections. Confirm your model year and part number before ordering.

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