Cooling Fan Control Unit CDI Box for Honda TRX400FW TRX450ES FE FM S 1995 2004
Product Overview
The Cooling Fan Control Unit CDI Box serves as both the fan controller and capacitive discharge ignition module in one replacement unit. It restores proper cooling fan activation and reliable spark delivery for Honda FourTrax owners dealing with overheating or no-start conditions. Designed as a direct plug-in replacement, this Cooling Fan Control Unit CDI Box eliminates the need for separate components and gets riders back on the trail quickly.
Key Features & Performance
- Combines cooling fan relay control and CDI ignition in a single sealed module
- Direct-fit replacement with OEM-style connectors—no cutting or splicing
- Solid-state circuitry provides consistent spark timing and fan trigger thresholds
- Weather-resistant housing guards against moisture, mud, and vibration
- Tested to match factory advance curves and temperature set points
Fitment & Compatibility
- 1995-2004 Honda TRX400FW FourTrax Foreman
- 1998-2004 Honda TRX450ES FourTrax Foreman
- 1998-2004 Honda TRX450FE FourTrax Foreman
- 1998-2004 Honda TRX450FM FourTrax Foreman
Common Uses
- Replacing a failed CDI causing intermittent spark or no-start issues
- Restoring radiator fan function when the engine overheats at low speed
- Trail-side repair or preventative maintenance on high-hour machines
- Cost-effective alternative to buying separate fan control module and CDI box
Frequently Asked Questions
Q: Will this Cooling Fan Control Unit CDI Box fix a fan that never turns on? A: Yes, if the original module has failed, this unit restores the temperature-activated fan logic so the fan cycles on and off correctly when the coolant reaches the set threshold.
Q: Can I use this on a 2005 model Honda TRX450? A: It is only verified for 1995-2004 model years; later models may use different wiring, so confirm connector style before ordering.
Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.
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