Excavator Starter Motors

128000-9980 12V 9-Tooth Starter Motor for Cub Cadet Big Country 4x2 Utility

Q: What numbers are documented for 128000-9980?

Primary Part Number: 128000-9980. Manufacturer / OEM Reference: KM-21163-2109. Manufacturer / OEM Reference: 128000-9981. Manufacturer / OEM Reference: 21163-2109. Catalog Cross-Reference: 18450N. Additional Source Reference - Verify Configuration: 1991-2004. Additional Source Reference - Verify Configuration: 2003-2005. Relationship labels distinguish formatting aliases, direct interchanges, remanufactured references and related assemblies.

Q: How do I confirm 128000-9980 before ordering?

Match the complete part number, compare the connector or mounting arrangement with the product photos, and confirm the machine or engine model and serial range. Send clear photos of the original unit when requesting a quote.

Brand illustration · Exact product photo available on request.

OEM / reference128000-9980

Specification12V Starter Motor

Catalog ID91003208

Starter motor identified by primary reference 128000-9980. The exact-reference catalog records design DD, voltage 12V, pinion teeth 9. Recorded application: Cub Cadet Big Country 4x2 Utility 2003-2005; Engine Kawasaki 9.5HP Engine. Confirm the complete number, mounting, terminals, rotation and pinion teeth against the original starter before ordering. The displayed EexcavaStart package is a catalog illustration, not a photograph of the supplied product.

Product Type: Starter Motor
Design: DD
Voltage: 12V
Pinion Teeth: 9
Condition: New replacement part
Gallery Representation: EexcavaStart neutral packaging illustration; exact product photo available on request

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Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.

Part-number relationships

Relationship	Reference family	Number
Primary Part Number	Primary identity used for this catalog page	128000-9980
Manufacturer / OEM Reference	Listed under Cub Cadet	KM-21163-2109
Manufacturer / OEM Reference	Listed under the exact-reference catalog	128000-9981
Manufacturer / OEM Reference	Listed under Kawasaki	21163-2109
Catalog Cross-Reference	Exact-reference catalog number	18450N
Additional Source Reference - Verify Configuration	Retained from the supplied catalog; compare the original unit	1991-2004
Additional Source Reference - Verify Configuration	Retained from the supplied catalog; compare the original unit	2003-2005

Product fitment guide

Part numbers and compatible models

Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.

Part identification

Reference numbers

Primary number

128000-9980

Manufacturer number

KM-21163-2109
128000-9981
21163-2109

Other documented relationship

18450N
1991-2004
2003-2005

Formatting aliases are the same number written differently. Related assemblies and remanufactured numbers are not presented as direct interchanges.

Product summary

12V Starter Motor

Category: Excavator Starter Motors
Catalog ID: 91003208
Photo views: 1

Before ordering

Confirm these details

Confirm voltage and power rating against the original starter nameplate.
Compare mounting-hole pattern, flange position and overall body orientation.
Confirm pinion tooth count and rotation where those values are specified.
Verify the engine model and machine serial range before ordering.

Machine fitment

Compatible model references

9 model references

Cub Cadet Big Country 4x2 Utility: 2003-2005; Engine Kawasaki 9.5HP Engine
Kawasaki KAF300 Mule 500: 1991; Engine 286cc
Kawasaki KAF300 Mule 500: 1993; Engine 286cc
Kawasaki KAF300 Mule 500: 1995; Engine 286cc
Kawasaki KAF300 Mule 520: 2000-2001; Engine 286cc
Kawasaki KAF300 Mule 550: 1997-2001; Engine 286cc
Kawasaki KAF300 Mule 550: 2003-2004; Engine 286cc
Catalog coverage: Cub Cadet (2003-2007) ** Kawasaki (1991-2004)
Fitment limitation: Confirm the exact number, nameplate, mounting, terminal layout, rotation and pinion teeth against the original starter before shipment

Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.

Quick fitment answers

Common questions about 128000-9980

Which machines use 128000-9980?

Recorded compatible model references include Cub Cadet Big Country 4x2 Utility: 2003-2005; Engine Kawasaki 9.5HP Engine, Kawasaki KAF300 Mule 500: 1991; Engine 286cc, Kawasaki KAF300 Mule 500: 1993; Engine 286cc, Kawasaki KAF300 Mule 500: 1995; Engine 286cc, Kawasaki KAF300 Mule 520: 2000-2001; Engine 286cc, Kawasaki KAF300 Mule 550: 1997-2001; Engine 286cc, Kawasaki KAF300 Mule 550: 2003-2004; Engine 286cc, Catalog coverage: Cub Cadet (2003-2007) ** Kawasaki (1991-2004) and 1 additional models shown on this page. Confirm the complete part number and machine serial range before ordering.

What numbers are documented for 128000-9980?

Manufacturer number: KM-21163-2109, 128000-9981, 21163-2109.

How do I confirm 128000-9980 before ordering?

Confirm voltage and power rating against the original starter nameplate. Compare mounting-hole pattern, flange position and overall body orientation. Confirm pinion tooth count and rotation where those values are specified. Send clear photos of the original unit and connector layout when requesting a quote.