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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: 33409N
The WAI 33409N is a brand-new 12V 4.2kW starter motor. It is manufactured by Letrika (Iskra design), supplied as a direct replacement for Iskra, Mahle Original, Letrika, and Agco original-equipment units across a range of agricultural machines. It replaces Iskra references including 11130904, 11131077, and 11131227, Mahle Original MS151, Letrika references including 11.131.077 and 11.131.227, and Agco references 3821 818 M91 and 3821 818 M94 — 51 cross-references in total.
Built to Letrika's Iskra design, the 33409N delivers clockwise rotation with a 10-tooth pinion on a 12V circuit, producing 4.2kW of cranking power. It is supplied brand new, not remanufactured, giving a clean installation without the variability of rebuilt units.
The 33409N fits Massey Ferguson, Farmtrac, and McCormick machines — 23 verified applications in total, covering models including the Massey Ferguson MF-291, MF-4320, MF-4325, Farmtrac 690 DT, 7100 DT, and 7110 DT. Use the selection widget or search by OEM number to confirm fit for your model.
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| 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. Yes. The WAI 33409N is cross-referenced against 51 OE references in total. Iskra references covered include 11130904, 11131077, 11131227, 11131507, 11131969, 11132099, 11132170, AZF4131, AZF4262, AZF4296, AZF4319, AZF4520, AZF4545, AZF4568, and IS1023. Letrika references include 11.131.077, 11.131.227, 11.131.507, 11.131.969, 11.132.099, and 11.132.170, plus LetrikaOLD 11.130.904. Use the cross-referenced catalogue or ask Simon to confirm your specific number.
A. Yes. The WAI 33409N is a verified replacement for Mahle Original MS151, and for Agco references 3821 818 M91 and 3821 818 M94, all within its 51-reference cross-reference list. Search by OEM number in our catalogue to confirm, or ask Simon if you need further help.
A. The 33409N covers 23 verified applications across Massey Ferguson (18 models), Farmtrac (3 models), and McCormick (2 models). Models include the Massey Ferguson MF-291, MF-291K, MF-330S, MF-4320, and MF-4325, and Farmtrac 690 DT, 7100 DT, and 7110 DT. Use the selection widget to match your exact make, model, and engine variant. Every fitment shown is backed by our Fit Guarantee.
A. The WAI 33409N operates on a 12V circuit, produces 4.2kW of cranking power, has clockwise (CW) rotation, and uses a 10-tooth pinion. It is built to Letrika's Iskra design and is supplied brand new.
A. It is supplied brand new — not remanufactured or reconditioned. You receive a fresh unit built to Letrika's Iskra design specification.
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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