MOTO1988 Regulator Rectifier & Ignition Kit for Honda Rancher/Foreman 1997–2006 — Coil, Spark Plug, Relay

MOTO1988's kit supplies a regulator rectifier, ignition coil, spark plug and relay engineered to replace Honda part 31600-HM7-003 for select Rancher and Foreman ATVs.

This all-in-one electrical replacement set is built to restore charging and ignition components on a range of Honda four-wheelers without buying parts separately. Designed as a direct-replacement option for OEM 31600-HM7-003 (replacement number 31600-HN5-671), the package bundles the regulator rectifier, ignition coil, single spark plug and relay to simplify repairs and get your ATV back on the trails faster.

Which Honda models will this MOTO1988 kit fit?

This kit is compatible with several late‑90s and 2000s Honda Rancher and Foreman models. Always match the OEM or manufacturer part numbers and compare photos before ordering to ensure fitment.

• Rancher 350 TRX350FE/FM/TE/TM — model years 2000–2006
• Foreman 400 TRX400FW — model years 1997–2003
• Foreman 450 TRX450ES/TRX450S — model years 1998–2001
• Manufacturer part reference: 31600-HM7-003 (replaces 31600-HN5-671)

How does the kit address charging and ignition problems?

Replacing worn charging and ignition parts together reduces diagnostic guesswork and avoids multiple trips to the parts store. The regulator rectifier helps regulate alternator output to the battery while the ignition coil and spark plug restore reliable spark delivery; the relay completes the electrical circuit where applicable.

• Regulator rectifier stabilizes voltage and prevents overcharging
• Ignition coil rebuilds high-voltage spark generation
• Spark plug provides fresh electrode gap for consistent combustion
• Relay included to replace a failed or intermittent switching component

What should I check before installing this replacement set?

Confirm fitment by comparing the part numbers and visual details with the components on your ATV. Also inspect wiring harness connectors, mounting points and the battery condition to avoid replacing parts unnecessarily.

• Verify OEM number 31600-HM7-003 or replacement 31600-HN5-671 matches your unit
• Compare connector shapes, bolt locations and mounting tabs visually
• Test battery voltage and alternator output to identify related issues
• Gather basic hand tools and a service manual or wiring diagram for your model

How do I get help if something doesn't fit or fails after purchase?

MOTO1988 provides pre-sale guidance and a one-year product service window so you can reach out if parts arrive damaged or incompatible. Keep photos of the original parts and your ATV handy when contacting support to speed resolution.

• Contact MOTO1988 customer service by email for fitment questions or troubleshooting
• Provide photos of your existing parts and connectors to confirm compatibility
• One-year product service covers defects; retain proof of purchase for claims
• Follow recommended installation steps and torque specs from your vehicle manual

Who is this kit for? If you own a Honda Rancher 350 or Foreman 400/450 within the listed years and you are experiencing charging irregularities, weak or inconsistent spark, or a blown relay, this MOTO1988 kit offers a consolidated, cost‑effective replacement option. It’s suitable for DIY mechanics who want straightforward plug-and-play parts that map to OEM numbers, as well as professional shops needing a compact repair bundle. Prioritize confirming the OEM references and connector fit before installing to ensure a smooth swap and reliable electrical performance.