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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: 18402N
The WAI 18402N is a brand-new 24V 4.5kW starter motor. It is built to Denso OSGR specification, supplying direct-replacement fitment for Komatsu, Case and Dresser plant machinery across nine recorded applications. Manufactured by Denso and cross-referenced against 55 OE and OEM part numbers — including Cummins 3863128, Cummins 3957592, and Denso 228000-0630 through to Denso 228000-6671 among others — this unit is the trusted choice when sourcing by original part number.
The OSGR (Off-Set Gear Reduction) design delivers the torque needed for heavy-duty 24-volt diesel systems whilst keeping the starter compact and reliable in demanding site conditions. Clockwise rotation and a 10-tooth pinion gear match the ring-gear geometry of the supported machines straight from the box.
Verified applications include Komatsu WA120, WA180, WA180-3 and WA250 wheel loaders, Case 521D, and Dresser 510C, 515C and 520C models. The full fitment list of nine applications is searchable in the selection widget.
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| Type | Starter Motor |
|---|---|
| Manufacturer | Denso |
| Design | OSGR |
| Voltage | 24V |
| Power | 4.5kW |
| Rotation | CW |
| 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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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 17793N | 30236N | 30403N | 32893N | 33217N | 17737N | S6004 | S6007 | S6039 | S6045 | S6046 | S6055 | S6055PR | S6061 | S6072 |
| Voltage | 12 | 12 | 12 | 24 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Design | OSGR | PMGR | PMGR | OSGR | OSGR | OSGR | |||||||||
| Manufacturer | Denso | Denso | Denso | Denso | Denso | Denso | |||||||||
| Power | 1.2 | 1.5 | 1.6 | 4.5 | 2.7 | 1.2 | 2.0 | 2.2 | 1.6 | 1.0 | 1.4 | 1.8 | 1.8 | 1.3 | 1.4 |
| Rotation | CW | CCW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW |
| Teeth | 9 | 13 | 9 | 12 | 11 | 9 | 9 | 9 | 9 | 9 | 9 | 12 | 12 | 9 | 9 |
A. This starter motor fits Komatsu, Case and Dresser plant machinery across nine verified applications, including Komatsu WA120, WA180, WA180-3 and WA250 wheel loaders, Case 521D, and Dresser 510C, 515C and 520C. Use the selection widget to match your exact make, model and engine, or search our cross-referenced catalogue by OEM number. Every fitment shown is backed by our Fit Guarantee.
A. Yes. The WAI 18402N cross-references against 55 Denso OE numbers, including 228000-0630, 228000-0631, 228000-0632, 228000-0633, 228000-1750, 228000-1751, 228000-1752, 228000-1753, 228000-6640, 228000-6641, 228000-6670 and 228000-6671, among others. Search our cross-referenced catalogue by your original Denso number to confirm your match.
A. Yes — both Cummins 3863128 and Cummins 3957592 are verified cross-references for the WAI 18402N. If you are sourcing by either of those Cummins numbers, this is the correct replacement unit.
A. This is a brand-new Denso-manufactured OSGR starter motor rated at 24V and 4.5kW, with clockwise rotation and a 10-tooth pinion gear. The OSGR (Off-Set Gear Reduction) design delivers the torque required for heavy-duty 24-volt diesel plant applications.
A. OSGR stands for Off-Set Gear Reduction. The design uses an offset reduction gear between the motor and the drive pinion, producing higher torque from a more compact unit than a conventional direct-drive starter — making it well suited to the high-compression diesel engines found in plant machinery such as Komatsu wheel loaders and Dresser equipment.
A. The WAI 18402N is cross-referenced against 55 OE and OEM part numbers in total, spanning Denso and Cummins references. Search our catalogue by any of these numbers to reach this listing directly.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
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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