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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: 10873N
The WAI 10873N is a brand-new 12V 2.0kW starter motor. It is built to the Denso OSGR design, replacing original-equipment numbers including Denso 228000-7530, Perkins U5MK8260, and Caterpillar 0R9703. It is engineered for Caterpillar mini excavators and covers 3 applications in the Caterpillar Ag. & Ind. range, including the 302.5, 303.5, and 304.5 Mini Excavators (1999–2004).
The OSGR (Over-running Clutch Gear Reduction) design delivers reliable high-torque cranking in compact machinery where consistent starting performance is essential. Clockwise rotation, an 11-tooth pinion, and a 12V/2.0kW output match the original Denso specification precisely, so it installs as a direct replacement without modification.
Supplied brand new — not remanufactured — this unit matches the original Denso build standard and is cross-referenced against manufacturer data for confirmed fitment.
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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 | Denso |
| Design | OSGR |
| Voltage | 12V |
| Power | 2.0kW |
| 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...
Standard Delivery: £4.99
Delivery Estimate: 1 to 2 working days
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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. The WAI 10873N replaces original-equipment starter motors from Denso, Perkins, and Caterpillar. OE references on this part include Denso 228000-7530, Denso 2280007530, Perkins U5MK8260, Caterpillar 0R9703, Caterpillar 1449966, and CAT 144-9966 — 6 references in total. To confirm fitment by OE number, search our cross-referenced catalogue or ask Simon.
A. This starter motor fits 3 Caterpillar Ag. & Ind. applications, including the 302.5 Mini Excavator, 303.5 Mini Excavator, and 304.5 Mini Excavator (1999–2004). Use the selection widget to match your exact machine model and confirm fitment, or ask Simon if your machine is not listed. Fitment is backed by our Fit Guarantee.
A. Yes. Denso 228000-7530 (also listed as 2280007530) is a direct cross-reference on this part. The WAI 10873N is built to the same Denso OSGR design, 12V, 2.0kW, clockwise rotation, 11-tooth pinion.
A. Yes. Perkins U5MK8260 is one of the 6 OE cross-references confirmed for the WAI 10873N. If you are sourcing a replacement against a Perkins part number, this unit is the cross-referenced match.
A. The WAI 10873N is supplied brand new — not remanufactured. It is built to the original Denso OSGR specification: 12V, 2.0kW, clockwise rotation, 11-tooth pinion.
A. OSGR stands for Over-running Clutch Gear Reduction. This design uses a gear reduction stage to produce higher cranking torque from a compact motor, making it well suited to the small-displacement engines in Caterpillar mini excavators. The WAI 10873N replicates the original Denso OSGR architecture.
A. Voltage: 12V; Power: 2.0kW; Design: OSGR; Rotation: Clockwise; Teeth: 11; Manufacturer design: Denso. Full details are in the specification table on this listing.
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.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
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