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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: 12787N
The WAI 12787N is a brand-new 12V 120A alternator built to the Letrika (Iskra) IR/EF design specification. It is a direct replacement for Case original-equipment alternators referenced as 84141452, 87310882, and 87652087, as well as Iskra / Letrika units cross-referenced as 11203822, IA1224, and AAK5759, and the Mahle equivalent MG 286 — covering seven cross-references in total.
Manufactured by Letrika to the Iskra internal-regulator/external-fan (IR/EF) design, the 12787N delivers 120 amperes of output at 12 volts with clockwise rotation. These are the defining parameters for matching the unit to a specific charging circuit, so always verify voltage, output and rotation direction against the original specification before fitting.
Supplied as a brand-new unit — not a remanufactured or exchange part — the 12787N is built to meet original charging performance requirements on the applications for which the referenced OE numbers were issued.
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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 | Alternator |
|---|---|
| Manufacturer | Letrika |
| Design | (Iskra) IR/EF |
| Voltage | 12V |
| Output | 120A |
| Rotation | CW |
| Condition | Brand New |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 13152N | A9154S | A9155 | A9221 | 12816N | A9055 | A9055(LETRIKA) | A9158 | A9158(LETRIKA) | A9161(LETRIKA) | A9190 | A9214 | A9214(LETRIKA) | A9219 | A9246(LETRIKA) |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 24 | |||||||
| Output Current | 65 | 95 | 120 | 65 | 95 | 120 | 50 | 100 | |||||||
| Design | IR/EF | (Iskra) IR | |||||||||||||
| Manufacturer | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | Letrika | ||||
| Pulley | V1 | AP | AP | AP | AP | Without Pulley | |||||||||
| Rotation | CW | CW | |||||||||||||
A. The WAI 12787N is a direct replacement for seven OE cross-references: Case 84141452, Case 87310882, and Case 87652087; Iskra / Letrika part numbers 11203822, IA1224, and AAK5759; and the Mahle equivalent MG 286. If your machine carries one of these numbers on its original alternator, the 12787N is the corresponding replacement. To confirm fitment against your machine model, search our cross-referenced catalogue by OEM number or ask Simon.
A. Yes. The Mahle MG 286 is one of the seven cross-references listed for the WAI 12787N. It is also cross-referenced against Iskra / Letrika and Case OE numbers as detailed above. If you are working from a Mahle reference, this is the corresponding WAI unit. Use the cross-reference search in our catalogue to verify against your original part number, or ask Simon if you need further confirmation.
A. The WAI 12787N runs at 12 volts with a 120-amp output and clockwise (CW) rotation. Always match all three parameters — voltage, amperage and rotation direction — against your original alternator specification before fitting, as an incorrect rotation or output rating will affect charging performance.
A. It is supplied brand new — not remanufactured, reconditioned, or sold on an exchange basis. No core return is required.
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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