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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: 17388N
The WAI 17388N is a brand-new 12V OSGR starter motor. It is manufactured to Denso specification, supplied as a direct replacement for Caterpillar agricultural and industrial equipment. It replaces Denso original-equipment references including 128000-4090, 128000-4091, and 128000-4092, along with Caterpillar references 1068553, 1430537, 7C4622, and 8T9685 — 17 verified cross-references in total. Fitted applications include the Caterpillar CS433B (1988–1993), with one confirmed application in the Caterpillar Ag. & Ind. range.
The OSGR (Off-Set Gear Reduction) design delivers reliable cranking torque suited to heavy-duty plant and agricultural duty cycles. Clockwise rotation, a 10-tooth pinion, and 12V operation match the original Denso specification precisely, so fitment is straightforward and no adaption is required.
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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 |
| 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...
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 17388N replaces 12 Denso original-equipment references, including Denso 128000-4090, Denso 128000-4091, Denso 128000-4092, Denso 128000-7040, Denso 128000-7041, and Denso 128000-7042 — 17 verified cross-references in total across Denso and Caterpillar. Search our cross-referenced catalogue by any of these OEM numbers to confirm fitment, or ask Simon if you need further guidance.
A. This starter motor replaces Caterpillar references 1068553, 1430537, 7C4622, and 8T9685, as well as CAT 143-0537. If you are working from a Caterpillar parts book, search our catalogue by any of these numbers. Every cross-reference is backed by our Fit Guarantee.
A. The WAI 17388N fits the Caterpillar Ag. & Ind. CS433B (1988–1993) — one confirmed application in the Caterpillar range. Use the selection widget or search by machine model or OEM number to verify fitment for your specific unit, or ask Simon if your machine is not listed.
A. It is a brand-new 12V OSGR (Off-Set Gear Reduction) starter motor built to Denso specification. Rotation is clockwise (CW) and the pinion carries 10 teeth, matching the original Denso unit it replaces.
A. OSGR stands for Off-Set Gear Reduction. This design uses an offset gear train to reduce the motor speed and increase cranking torque at the pinion, making it well suited to the demands of heavy-duty plant and agricultural machinery such as the Caterpillar equipment this unit is designed for.
A. Yes. The WAI 17388N is supplied brand new — not remanufactured or reconditioned. It is a fresh unit built to Denso specification for direct like-for-like replacement.
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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