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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: 33403N
The WAI 33403N is a brand-new 12V 4.2kW starter motor. It is manufactured by Letrika (Iskra design), replacing original-equipment numbers across Iskra, Mahle, Letrika, and Claas — including Iskra IS1342, Mahle MS 407, and Claas 2154 453 0. It is designed for Claas agricultural machinery and covers 13 Claas applications, including the Arion 410, Arion 420, Arion 430, Arion 530, and Arion 540 series.
Built to Letrika's own specification, this unit delivers 4.2kW of cranking power at 12 volts with clockwise rotation and a 10-tooth pinion — the exact configuration required by the original Iskra design. Supplied brand new, it is a direct replacement rather than a reconditioned or remanufactured unit, which simplifies installation and eliminates the uncertainty of exchange programmes.
With 8 verified OE cross-references across four brands, this starter motor is straightforward to match against an existing part number from your machine's service records or the worn unit itself.
About PartsForMachines:
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 | Letrika |
| Design | (Iskra) |
| Voltage | 12V |
| Power | 4.2kW |
| 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 | S9087 | S9097 | S9098 | S9144 | S9172 | S9173 | S9228 | S9236 | S9284S | S9420 | S9428S | 17229N | 18422N | 18481N | 18483N |
| Voltage | 12 | 24 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Design | (Iskra) DD | (Iskra) PLGR | Letrika (Iskra) | (Iskra) PLGR | |||||||||||
| Manufacturer | Letrika | Letrika | Starter | Letrika | |||||||||||
| Power | 3.2 | 4.0 | 3.2 | 3.2 | 3.2 | 4.2 | 4.2 | 4.0 | 3.2 | 1.0 | 4.2 | 3.4 | 3.1 | 4.2 | |
| Rotation | CW | CW | CW | CW | CW | CW | CW | CW | CW | CCW | CW | CW | CW | CW | CW |
| Teeth | 10 | 11 | 10 | 10 | 10 | 11 | 10 | 9 | 10 | 9 | 10 | 11 | 10 | 9 | 10 |
A. The WAI 33403N replaces 8 original-equipment references across four brands. These include Iskra / Letrika tech 11132056, Iskra / Letrika commercial IS1342, Iskra / Letrika family AZF4283, Letrika 11.132.056, Mahle MS 407, Mahle Original MS407, Claas 2154 453 0, and Claas 21544530. Search our cross-referenced catalogue by any of these numbers to confirm a match, or ask Simon if you are unsure.
A. This starter motor fits 13 Claas applications, including the Arion 410, Arion 410 CIS, Arion 420, Arion 420 CIS, Arion 430, Arion 430 CIS, Arion 530, and Arion 540. Use the selection widget to match your exact model and engine variant, or search by your existing OE part number. Every fitment shown is backed by our Fit Guarantee.
A. The WAI 33403N is a 12V unit producing 4.2kW of cranking power, with clockwise (CW) rotation and a 10-tooth pinion. It is manufactured by Letrika to the Iskra design and is supplied brand new — not reconditioned or remanufactured.
A. Yes. Mahle MS 407 and Mahle Original MS407 are both listed as verified OE cross-references for the WAI 33403N, confirming it is a direct replacement for those units.
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. 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.
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