Honda VFR400 RVF400 18 Coil Magneto Stator | 31120-MR8-781

Product Overview

Restore reliable charging and ignition performance with this 18 coil magneto stator, designed for selected Honda VFR400 and RVF400 motorcycle applications.

Built to replace 31120-MR8-781, this stator helps solve common electrical issues such as battery not charging, weak or no spark, hard starting, unstable voltage, and intermittent charging failure.

Made with copper windings, copper-clad steel wire, and a durable aluminum base plate, this magneto stator is designed to provide stable electrical output, reliable charging performance, and long service life under sportbike riding conditions.

Product Compatibility

Brand	Model	Engine / HP / CC	Year Range	Notes
Honda	VFR400 NC21	400cc	1985–1987	Verify OEM number, connector style, and stator dimensions before purchase
Honda	VFR400 NC24	400cc	1987–1988	Verify OEM number, connector style, and stator dimensions before purchase
Honda	VFR400R NC30	400cc	1989–1992	Verify OEM number, connector style, and stator dimensions before purchase
Honda	RVF400 NC35	400cc	1994–1996	Verify OEM number, connector style, and stator dimensions before purchase

OEM Cross Reference:
31120-MR8-781

Related references sometimes seen:
31100-MR8-003, 31100-MR8-781

Specifications

Specification	Details
Part Type	Magneto Stator Coil
Configuration	18 Coil
Outer Diameter	103 mm
Inner Diameter	42 mm
Thickness	15 mm
Material	Copper coil / Copper-clad steel wire / Aluminum plate
Function	Charging and ignition system support
Installation	Direct replacement on correctly matched applications
Fitment Method	Match by OEM number, connector style, stator size, and original part layout
Condition	100% New Aftermarket

Key Features

• 18 Coil Stator Design – Helps provide stable electrical output for the charging system
• OEM-Style Replacement – Designed to replace Honda stator reference 31120-MR8-781
• Reliable Charging Performance – Helps restore battery charging and electrical-system stability
• Durable Construction – Built with copper windings and an aluminum base plate for long service life
• Stable Ignition Support – Helps improve spark stability, starting reliability, and throttle response
• Direct Replacement Style – Designed for straightforward installation when connector and dimensions match