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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: 18931N
The WAI 18931N is a brand-new 24V 5.4kW starter motor. It is built to Bosch DD specification, replacing original-equipment Bosch units across 154 cross-referenced applications. It is designed for heavy-duty use on KHD engines and crosses directly to Bosch references including 0 001 402 001, 0 001 402 007, 0 001 402 011, and a further 151 Bosch OE numbers — making it a reliable, cost-effective alternative to sourcing the original Bosch part.
The DD (direct-drive) design delivers a clockwise rotation with an 11-tooth pinion at 24 volts and 5.4 kilowatts of cranking power. The direct-drive configuration is robust and well-suited to the higher compression demands of industrial and agricultural diesel engines, where consistent and dependable starting is critical. Supplied brand new — not remanufactured — the 18931N meets OE specification straight out of the box.
WAI is a leading manufacturer of rotating electrics, and this starter is engineered to OE standards for fit, form and function.
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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 | Bosch |
| Design | DD |
| Voltage | 24V |
| Power | 5.4kW |
| Rotation | CW |
| Teeth | 11 |
| 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 | 10909N | 17820N | 17972N | 19112N | 30584-OS | 31231N | 32669N | 33071N | 33194N | 33291N | 17813N | 18929N | 19005N | 30233N | 31282N |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 12 | 12 | 12 |
| Design | PMGR | PMGR | PMGR | PMGR | PMGR | PMGR | PMGR | PMGR | PMGR | PMGR | PMGR | DD | PLGR | PMGR | DD |
| Manufacturer | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch |
| Power | 1.4 | 2.0 | 1.7 | 1.1 | 1.7 | 2.0 | 2.0 | 1.1 | 2.2 | 1.2 | 1.7 | 6.6 | 3.0 | 1.4 | 0.8 |
| Rotation | CW | CCW | CCW | CW | CW | CCW | CW | CW | CW | CW | CCW | CW | CW | CW | CW |
| Teeth | 10 | 10 | 10 | 9 | 11 | 10 | 9 | 9 | 10 | 9 | 10 | 12 | 13 | 11 | 9 |
A. The WAI 18931N is a direct replacement for Bosch original-equipment starter motors, cross-referencing 154 Bosch OE numbers in total. Verified references in the sample include Bosch 0 001 402 001, Bosch 0 001 402 007, Bosch 0 001 402 011, Bosch 0 001 410 046, Bosch 0 001 410 102, Bosch 0 001 410 113, Bosch 0 001 416 005, and Bosch 0 001 416 070, among others. To confirm your specific Bosch number is covered, search our cross-referenced catalogue by OEM number or ask Simon — every match shown is backed by our Fit Guarantee.
A. Fitment data for the WAI 18931N covers KHD engines (applications spanning 1964–1973). To verify whether your specific engine variant, serial number, or machine model is included, use the selection widget or search our catalogue by machine model or OEM number. If your application is not listed, ask Simon — all fitments shown are covered by our Fit Guarantee.
A. The 18931N is a 24-volt, 5.4kW direct-drive (DD) starter motor with clockwise rotation and an 11-tooth pinion. It is supplied brand new — not remanufactured — and is built to Bosch OE specification for fit, form, and function.
A. The WAI 18931N is supplied brand new. It is not a remanufactured or reconditioned unit, so it meets OE specification without the variables associated with rebuilt parts.
A. DD stands for direct-drive. In a direct-drive starter, the motor shaft engages the ring gear directly rather than through a reduction gear set. This design is robust and well-proven in industrial and agricultural diesel applications where high cranking torque and durability are required.
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.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
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