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Technical Specification
PRODUCT NUMBER 19016N32568N32734NMS291MS8430584NMS399S4030S4042S9002PRS9020S9033S9406SS9440P17184N
Voltage 1212121212121212121212121212
Design PMOSGROSGRPLGRPLGRPLGRDD
Manufacturer MitsubaPoongsungMitsubaMahleMahleMahleElectroprecizia
Power 1.62.04.24.23.23.02.02.11.42.21.22.23.0
Rotation CCWCWCWCWCWCWCWCWCWCWCWCWCW
Teeth 9910111010111912119119

Q 1. Which Komatsu machines does this starter motor fit?

A. The WAI 18106N fits 9 Komatsu applications, including the GD521A, GD661A, PC200, PF5, PW100, PW150, PW200, and WA200 across model years from the mid-1980s to the mid-1990s. Use the selection widget to match your exact make, model, and engine variant, or search our cross-referenced catalogue by machine model or OEM number. Every fitment shown is backed by our Fit Guarantee.

Q 2. Does this starter replace Komatsu part numbers 600-813-3380 or 600-813-3390?

A. Yes. The WAI 18106N cross-references 18 OE numbers in total, including KOMATSU 600-813-3380, KOMATSU 600-813-3390, and KOMATSU 600-813-4120, as well as Nikko references including NIKKO 0-23000-1230, NIKKO 0-23000-1231, and NIKKO 0-23000-1270. If your number is not listed, search our cross-referenced catalogue or ask Simon to confirm the match.

Q 3. Is this a reconditioned unit or brand new?

A. The WAI 18106N is supplied brand new — it is not a remanufactured or exchange unit. No core return is required.

Q 4. What are the key electrical and mechanical specs of this starter motor?

A. The 18106N operates on a 24V supply, produces 5.5kW of output power, and rotates clockwise. The pinion carries 13 teeth. It is built to Nikko OSGR (Off-Set Gear Reduction) design, which delivers high cranking torque with reduced current draw — appropriate for the heavy-duty diesel engines found in Komatsu plant machinery.

Q 5. Will this starter motor fit a 1988 Komatsu machine?

A. Several models in the fitment list fall within that period — the Komatsu PC200 (1987–1986), PW100 (1990–1988), and PW150 (1990–1988) are confirmed applications. Use the selection widget with your exact model and engine details to verify fit for your specific machine, or search by OEM part number. Our Fit Guarantee covers every listed application.

Q 6. How many OE cross-reference numbers does this part cover?

A. There are 18 OE cross-reference numbers in total across the NIKKO and KOMATSU catalogues. The sample includes NIKKO 0-23000-1230, NIKKO 0-23000-1231, NIKKO 0-23000-1270, NIKKO 0-23000-1271, NIKKO 0-23000-1272, NIKKO 0-23000-1273, KOMATSU 600-813-3380, KOMATSU 600-813-3390, and KOMATSU 600-813-4120, among others. Search our catalogue by any of these numbers to confirm the match.

Q 7. How do I confirm this part fits my vehicle or machine?

A. Use the selection widget to match your make, model and engine, or search our cross-referenced catalogue by OEM number, machine model or equivalent part across brands. If your vehicle is not listed, ask Simon. Every fitment shown is backed by our Fit Guarantee.

Q 8. Is this part covered by your Fit Guarantee?

A. Yes. Every vehicle and OE cross-reference shown for this part is checked against manufacturer data and backed by our Fit Guarantee. If it is not right, our Fit Guarantee or hassle-free returns have you covered.

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