For Honda ATV TRX400EX FOURTRAX 400 1999 - 2004 Starter Relay Solenoid New
For Honda ATV TRX400EX FOURTRAX 400 1999 - 2004 Starter Relay Solenoid New
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Starter Relay Solenoid for Honda ATV TRX400EX FourTrax 400
This starter relay solenoid is a direct-fit electrical component that delivers reliable current to the starter motor on Honda ATV TRX400EX FourTrax 400 models from 1999 through 2004.
Overview
This starter relay solenoid for Honda ATV models activates the starter circuit so the engine cranks cleanly every time you press the start button. Built as a replacement solenoid for the Honda TRX400EX FourTrax 400, it handles the high-current load between battery and starter without voltage drop. It is the right part for riders maintaining a 1999 to 2004 TRX400EX who want dependable starting instead of a clicking or dead relay.
Built For Performance
- Heavy-duty internal contacts rated for repeated high-current starter engagement
- Sealed housing resists mud, water, and trail debris
- Copper winding for consistent pull-in and hold current
- Direct-fit mounting pattern matching the original relay footprint
- Corrosion-resistant terminals for long service in wet conditions
- Factory-style connector layout for a clean plug-in installation
Fits These Machines
- for Honda FourTrax 400 TRX400EX 1999
- for Honda FourTrax 400 TRX400EX 2000
- for Honda FourTrax 400 TRX400EX 2001
- for Honda FourTrax 400 TRX400EX 2002
- for Honda FourTrax 400 TRX400EX 2003
- for Honda FourTrax 400 TRX400EX 2004
On-The-Job Use
- Replacing a failed or clicking starter relay on a trail ATV
- Restoring reliable electric start after mud or water exposure
- Seasonal maintenance on a 1999 to 2004 TRX400EX
- Off-road riding where consistent cold starts matter
Specs At A Glance
| Part Type | Starter Relay Solenoid |
| Position | Starter circuit |
| Compatible Models | Honda TRX400EX FourTrax 400 |
| Years Covered | 1999 - 2004 |
| Condition | New |
Good To Know
Q: How do I know the solenoid is the problem and not the starter? A: A single loud click with no crank usually points to the solenoid, while a slow or grinding crank often points to the starter or battery. Testing voltage at the solenoid terminals confirms which component is failing.
Q: Is this a direct replacement for the stock relay? A: It is built to match the original mounting and connector layout on the listed TRX400EX years. Confirm your model and year 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.
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