Skip to product information
Cooling Fan Control Unit CDI Box for Honda TRX400FW TRX450ES FE FM S 1995 2004
$85.69
Sale price
$85.69
Regular price
Quantity
Pickup currently not available
Secure Checkout • Encrypted Payments
Free Shipping
Contiguous U.S.
1-Year Warranty
Parts you can rely on
30-Day Returns
Hassle-free returns
Need help confirming fitment?
Talk with a parts expert today.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Equipment Fitment
Review the equipment and model information below. Fitment can vary by serial number, production date, or machine configuration, so confirm your model and reference numbers before ordering.
Equipment / model
- 1995-2004 Honda TRX400FW FourTrax Foreman
- 1998-2004 Honda TRX450ES FourTrax Foreman
- 1998-2004 Honda TRX450FE FourTrax Foreman
- 1998-2004 Honda TRX450FM FourTrax Foreman
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
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.