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Technical Specification
PRODUCT NUMBER 17793N30236N30403N32893N33217N17737NS6004S6007S6039S6045S6046S6055S6055PRS6061S6072
Voltage 121212241212121212121212121212
Design OSGRPMGRPMGROSGROSGROSGR
Manufacturer DensoDensoDensoDensoDensoDenso
Power 1.21.51.64.52.71.22.02.21.61.01.41.81.81.31.4
Rotation CWCCWCWCWCWCWCWCWCWCWCWCWCWCWCW
Teeth 91391211999999121299

Q 1. What machine does the WAI 18981N fit?

A. From the confirmed fitment data, this starter motor fits the Massey Ferguson MF9220 (2004–2006) — 1 application in total. If your Massey Ferguson model is not listed, cross-reference by OE number using our catalogue, use the selection widget to match your make, model and engine, or ask Simon. Every fitment shown is backed by our Fit Guarantee.

Q 2. Does this starter motor replace Denso original-equipment numbers?

A. Yes. The WAI 18981N is a direct aftermarket replacement for Denso 2808023, Denso 428000-2650, and Denso 4280002650. There are 8 cross-references in total across Denso, Delco Remy, Cummins, Komatsu, and Unipoint fitments. Search our cross-referenced catalogue by OEM number to confirm your specific application.

Q 3. Will this replace a Delco Remy or Cummins starter?

A. Yes — the WAI 18981N cross-references to Delco Remy DRS0348 and Cummins C6008631410, along with Komatsu 600-863-1410 and 6008631410, and Unipoint STR5008. If your machine carries any of these original part numbers, this unit is the listed aftermarket replacement. Use the OEM number search in our catalogue to confirm, or ask Simon if you are unsure.

Q 4. What are the key specifications of the 18981N?

A. The WAI 18981N is a 12V, 2.2kW starter motor in the Denso OSGR (Over-running with Gear Reduction) design. It has a 9-tooth drive pinion, clockwise rotation, and is supplied brand new. The full specification table is shown above in the product listing.

Q 5. What does OSGR mean and why does it matter?

A. OSGR stands for Over-running Starter with Gear Reduction. The gear-reduction stage multiplies torque before it reaches the pinion, allowing a physically compact motor to deliver strong cranking force — particularly valuable on agricultural and plant machinery where high compression engines and cold-start conditions place heavy demands on the starter.

Q 6. Is this starter motor brand new or remanufactured?

A. The WAI 18981N is supplied brand new — not remanufactured or reconditioned. This is confirmed in the product specification.

Q 7. Does the WAI 18981N fit a Massey Ferguson 135 or Massey Ferguson 255?

A. The confirmed fitment data for this specific part covers the Massey Ferguson MF9220 (2004–2006). The MF 135, MF 255, and other earlier Massey Ferguson models are not listed for this starter. Use the selection widget to match your exact model and engine variant, or search by your original part number — our catalogue covers a wide range of Massey Ferguson starter motors across different model series.

Q 8. Can I ask questions about this product before ordering?

A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.

Q 9. 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.

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