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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. What does this starter motor replace — which Bombardier and John Deere part numbers does it cross to?

A. The WAI 18817N replaces Bombardier OE references 420-888-991, 420888991, 711-888-991, and 711888991, and John Deere references C420-888-991 and C420888991 — 6 OE cross-references in total. To confirm this is the correct replacement for your machine, search our cross-referenced catalogue by OEM number or machine model, or ask Simon.

Q 2. Does this starter fit my John Deere — how do I confirm compatibility?

A. Vehicle-fitment data is not published for this part in our catalogue. The most reliable way to confirm compatibility is to match by OE part number: if your original starter carries any of the references listed (Bombardier 420-888-991 / 420888991 / 711-888-991 / 711888991 or John Deere C420-888-991 / C420888991), this WAI 18817N is the direct replacement. You can search our cross-referenced catalogue by OEM number or ask Simon to verify suitability. Every fitment confirmed this way is backed by our Fit Guarantee.

Q 3. What are the key specs — voltage, power output, rotation and tooth count?

A. The WAI 18817N is a 12V starter motor producing 0.7kW, with counter-clockwise (CCW) rotation and a 9-tooth drive pinion. It uses a Mitsuba PMDD (Permanent Magnet Direct Drive) design and is supplied brand new. Verify that all four figures — voltage, power, rotation direction and tooth count — match your application before ordering.

Q 4. What does PMDD mean on this starter motor?

A. PMDD stands for Permanent Magnet Direct Drive. Rather than wound field coils, the motor uses a permanent magnet field, which keeps the unit compact and lightweight while maintaining consistent cranking output. This is the same design as the original Mitsuba starter it replaces.

Q 5. 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.

Q 6. 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.

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