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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £4.99 | 1 to 2 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £9.95 | 7 to 10 working days |
Product Number: 18666N
The WAI 18666N is a brand-new 12V starter motor. It is built to Mitsuba PMDD (Permanent Magnet Direct Drive) specification, supplied as a direct replacement for Honda original-equipment units referenced 31200-HN2-003, 31200-HN2-A01, 31200HN2003, and 31200HN2A01, as well as the Remy equivalent RS41252.
PMDD design eliminates the reduction gear assembly found in conventional starters, using a permanent magnet field and a direct-drive pinion to deliver reliable engagement in a compact, lightweight package. With a rated output of 0.34 kW at 12V, a 10-tooth pinion, and counter-clockwise rotation, the 18666N is configured to match the original Honda specification precisely — meaning no modification is required at installation.
Being brand new rather than remanufactured, the unit carries none of the wear history or tolerance variation associated with reconditioned cores, making it a straightforward like-for-like swap.
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PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
| Type | Starter Motor |
|---|---|
| Manufacturer | Mitsuba |
| Design | PMDD |
| Voltage | 12V |
| Power | 0.34kW |
| Rotation | CCW |
| Teeth | 10 |
| Condition | Brand New |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Exploring the WAI Starter Motor and Alternator at Partsformachines.com Introduction: In the Plant and Agriculture sector, a starter motor and alternator are parts that ensure a machine runs smoothly. At Partsformachines.com we have partnered with WAI, a global manufacturer of auto and plant machinery parts to off...
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Delivery Estimate: 1 to 2 working days
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 19016N | 32568N | 32734N | MS291 | MS84 | 30584N | MS399 | S4030 | S4042 | S9002PR | S9020 | S9033 | S9406S | S9440P | 17184N |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | |
| Design | PMOSGR | OSGR | PLGR | PLGR | PLGR | DD | |||||||||
| Manufacturer | Mitsuba | Poongsung | Mitsuba | Mahle | Mahle | Mahle | Electroprecizia | ||||||||
| Power | 1.6 | 2.0 | 4.2 | 4.2 | 3.2 | 3.0 | 2.0 | 2.1 | 1.4 | 2.2 | 1.2 | 2.2 | 3.0 | ||
| Rotation | CCW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | ||
| Teeth | 9 | 9 | 10 | 11 | 10 | 10 | 11 | 19 | 12 | 11 | 9 | 11 | 9 | ||
A. The WAI 18666N replaces Honda OE references 31200-HN2-003, 31200-HN2-A01, 31200HN2003, and 31200HN2A01. It also crosses to the Remy reference RS41252. These are the only cross-references published for this part. To confirm suitability for your machine, search our cross-referenced catalogue by OEM number or machine model, or ask Simon — every OE cross-reference shown is backed by our Fit Guarantee.
A. Yes — Remy RS41252 is a listed cross-reference for the WAI 18666N. If you are working from a Remy part number, this unit is the confirmed equivalent. Use our catalogue search by OEM number to verify against your application, or ask Simon if you need further confirmation.
A. The WAI 18666N operates at 12V with a rated output of 0.34kW. It uses a Mitsuba PMDD (Permanent Magnet Direct Drive) design, has a 10-tooth pinion, and rotates counter-clockwise (CCW). The unit is supplied brand new.
A. PMDD stands for Permanent Magnet Direct Drive. Unlike conventional reduction-gear starters, a PMDD unit uses a permanent magnet field and drives the pinion directly — resulting in a compact, lightweight assembly with fewer moving parts. The WAI 18666N is built to this Mitsuba PMDD specification to match the original Honda design.
A. It is brand new. The 18666N carries no wear history or core tolerances associated with remanufactured units, making it a straightforward like-for-like replacement.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
A. Compatible spares and accessories are shown on the Related Accessories tab of this product page, and common parts across the brands we stock are in our Parts & Spares section.
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