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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: 12103N
Find the right Starter Motor & Alternator for your Machine
Starter Motor & Alternator FinderThe WAI 12103N is a brand-new 12V 55A alternator. It comes with IR/EF design, replacing Lucas, Hitachi, and Valeo original-equipment units across 48 Massey Ferguson applications. It is a direct-fit replacement for the Lucas 23835 and 23835A, the Hitachi LR150-191, and Valeo 510-006 and 510-044 references among 14 OE cross-references in total.
Built to IR/EF (internally regulated, externally fan-cooled) specification, the 12103N delivers 55 amps of charging output at 12 volts with clockwise rotation — matching the original electrical architecture of the Massey Ferguson tractor models it serves. The Lester numbers 12044, 12103, 12122, 12125, and 12172 are all covered by this unit, making it straightforward to verify against existing workshop reference systems.
The 48 Massey Ferguson applications include the MF-135, MF-140, MF-142, MF-145, MF-148, MF-152, MF-155, and MF-158 — primarily 1981 variants, though the full application list covers further models. Use the selection widget or search by OE number to confirm fitment for your specific machine.
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| Type | Alternator |
|---|---|
| Voltage | 12V |
| Output | 55A |
| Rotation | CW |
| Design | IR/EF |
| Lester | 12044, 12103, 12122, 12125, 12172 |
| 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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Compare With Similar Items
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| Technical Specification | |
|---|---|
| PRODUCT NUMBER | A9548S |
| Manufacturer | Letrika |
A. The WAI 12103N fits 48 Massey Ferguson applications, including the MF-135, MF-140, MF-142, MF-145, MF-148, MF-152, MF-155, and MF-158. Use the selection widget to match your exact model and engine variant, or search our cross-referenced catalogue by machine model. Every fitment shown is backed by our Fit Guarantee.
A. Yes. The WAI 12103N is a direct replacement for Lucas 23835 and Lucas 23835A. It also replaces Hitachi LR150-191, Valeo 510-006, Valeo 510-044, Letrika (Iskra) 11.204.374, and a range of Motorola references — 14 OE cross-references in total. Search our catalogue by any of these numbers to confirm this is the right unit.
A. This alternator replaces Hitachi LR150-191 and Valeo 510-006 and 510-044. If you are working from a workshop reference, the Lester numbers 12044, 12103, 12122, 12125, and 12172 all correspond to this unit.
A. The 12103N is a 12-volt, 55-amp alternator with clockwise rotation and an IR/EF (internally regulated, externally fan-cooled) design. It is supplied brand new.
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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