2007–2020 Kawasaki KFX90 KSF90 Mongoose 90 8-Coil 3-Wire Stator

Product Overview

Replace a weak, burned, or failed stator with this 8-coil 3-wire magneto stator, designed for select Kawasaki KFX90 / KSF90 and KYMCO Mongoose 90 ATV models using reference numbers 21003-Y002, 21003-Y005, 21003-Y006, and 31120-LBD4-900.

The stator is an important part of the ATV charging and ignition system. It helps generate electrical power while the engine is running, supporting the ignition circuit, battery, lights, and other electrical components. If your Kawasaki KFX90, KSF90, or KYMCO Mongoose 90 has weak charging, poor spark, dim lights, unstable voltage, hard starting, or stator-related electrical failure, replacing the stator may help restore normal electrical performance.

Built with a metal lamination core and copper windings, this replacement stator is designed for stable conductivity, heat resistance, and reliable off-road use. Please compare your original stator’s OEM/reference number, coil count, wire count, connector layout, trigger coil position, mounting hole distance, and dimensions before ordering.

Product Compatibility

Make	Model	Year Range	OEM / Reference Number	Fitment Notes
Kawasaki	KFX90 / KSF90	2007–2020	21003-Y002 / 21003-Y005 / 21003-Y006	Main fitment; confirm original stator size and plug layout
Kawasaki	KFX 90 / KSF 90 ATV	2007–2020	21003-Y002 / 21003-Y005 / 21003-Y006	Model-name variation; verify original stator before ordering
KYMCO	Mongoose 90	2007–2018	31120-LBD4-900	Main KYMCO fitment; compare connector and dimensions
KYMCO	KXR 90 Euro 2	2004–2006	31120-LBD4-900 / related references	Possible related fitment; verify original part
KYMCO	Maxxer 90	2010–2016	31120-LBD4-900 / related references	Fits matching 8-coil 3-wire stator version only
KYMCO	Maxxer 90S	2017–2020	31120-LBD4-900 / related references	Confirm wire count, plug style, and trigger coil position
ATV / Quad	90cc Youth ATV Platform	Select applications	Listed references	Match by OEM number, size, and connector layout

Important Fitment Note:
Some aftermarket listings extend Kawasaki KFX90 / KSF90 fitment beyond 2020. This product page uses the conservative 2007–2020 range from the provided product data. If your original stator matches the same OEM/reference number, 8-coil / 3-wire layout, connector style, 29mm inner diameter, 88mm outer diameter, 40mm mounting hole distance, and trigger coil position, it may fit related later applications as well. Always compare the original part before ordering.

Specifications

Specification	Details
Product Type	Magneto Stator / Generator Stator Coil
Coil Count	8 Coils / 8 Poles
Wire Count	3 Wire
Electrical Type	DC
Outer Diameter	88mm / 3.5"
Inner Diameter	29mm / 1.1"
Mounting Hole Distance	40mm / 1.6"
Trigger Mounting Hole Distance	34mm / 1.3"
OEM / Reference Number	21003-Y002 / 21003-Y005 / 21003-Y006 / 31120-LBD4-900
Application	ATV / Quad Charging & Ignition System
Compatible Brands	Kawasaki, KYMCO
Material	Metal Lamination Core + Copper Winding

Key Features

• Designed for select Kawasaki KFX90 / KSF90 youth ATV models
• Fits compatible KYMCO Mongoose 90, KXR 90, Maxxer 90, and Maxxer 90S applications when the original stator matches
• Replaces common references 21003-Y002, 21003-Y005, 21003-Y006, and 31120-LBD4-900
• 8-coil 3-wire DC stator helps support charging and ignition system output
• Includes trigger coil position for matching applications
• Helps address weak charging, poor spark, hard starting, dim lights, unstable voltage, or stator failure
• Direct replacement style, but original reference number, connector layout, and dimensions must be checked before installation

OEM Cross Reference

OEM / Reference Number	Notes
21003-Y002	Common Kawasaki KFX90 / KSF90 stator reference
21003-Y005	Common Kawasaki KFX90 / KSF90 stator reference
21003-Y006	Common Kawasaki KFX90 / KSF90 stator reference
31120-LBD4-900	Common KYMCO Mongoose 90 / Maxxer 90 / KXR 90 stator reference
31120-LBD4-90A	Possible related KYMCO reference on some aftermarket listings
31120-LBD4-90B	Possible related KYMCO reference on some aftermarket listings

Please use the OEM/reference number together with physical dimensions and connector layout for fitment confirmation. If your original stator has a different wire count, outer diameter, inner diameter, trigger coil position, mounting hole spacing, thickness, or plug style, this part may not fit.