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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: 12780N
The WAI 12780N is a brand-new 12V 90A alternator. It is built to Bosch IR/IF specification, replacing Bosch original-equipment references 0 124 325 166 and 0124325166 as well as Delco Remy DRA1271, Iskra / Letrika IA1541 and AAK5842, Mahle MG 264, John Deere AL166645 and SE501829, and a further 16 cross-references in total. Designed for John Deere agricultural equipment, it covers 76 John Deere applications including the 6020, 6020SE, 6090MC, 6090RC, 6100MC, 6100RC, 6110B and 6110E.
The IR/IF (internally regulated, internally fan-cooled) design keeps the unit compact and self-contained, removing the need for an external regulator and simplifying installation on tight engine bays. At 90 amps output the alternator meets the electrical demand of modern John Deere powerplants across mid-range tractor variants. Rotation is clockwise and the unit is supplied without a pulley, so the original pulley is transferred directly from the outgoing unit — preserving drive-belt alignment and avoiding unnecessary additional expense.
Being brand new rather than remanufactured means there are no worn brushes, degraded bearings or aged windings to contend with from the outset. The unit arrives ready to fit against the OE mounting points.
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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 | Bosch |
| Design | IR/IF |
| Voltage | 12V |
| Output | 90A |
| Rotation | CW |
| Pulley | w/o Pulley |
| 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 | 12384N | 13381N-7G | 13625N | 13922N | 13998N | 20008N | 20803N | 21346N | 21480N | 21906N | 23344N | 23777N | 23914N | 11134N | 11234N |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Output Current | 150 | 90 | 120 | 140 | 180 | 180 | 90 | 140 | 200 | 120 | 150 | 140 | 125 | ||
| Design | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | ||
| Manufacturer | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch | Bosch |
| Pulley | SC6 | S7 | S6 | SC6 | SC6 | SC6 | S6 | SC6 | S6 | S7 | SC6 | SC6 | S6 | ||
| Rotation | CW | CW | CW | CCW | CW | CW | CW | CW | CW | CW | CW | CW | |||
A. The WAI 12780N fits John Deere models including the 6020, 6020SE, 6090MC, 6090RC, 6100MC, 6100RC, 6110B and 6110E — 76 John Deere applications in total. Use the selection widget to match your specific model and engine variant, search our cross-referenced catalogue by machine model or OEM number, or ask Simon if your model is not listed. Every fitment shown is backed by our Fit Guarantee.
A. Yes. It replaces Bosch OE references 0 124 325 166 and 0124325166, and Delco Remy DRA1271. It also cross-references Iskra / Letrika IA1541, AAK5842 and 11204478, Mahle MG 264 and MG264 Original, John Deere AL166645, SE501829 and SE 50 182 9, Letrika 11.204.478, and Sando 20103610 and 20103611 — 16 references in total. If you are matching by an OE number, search our cross-referenced catalogue or ask Simon to confirm.
A. IR/IF stands for internally regulated and internally fan-cooled. The voltage regulator is built into the alternator body, so no separate external regulator is required. This makes the WAI 12780N a direct replacement for Bosch-design units on John Deere equipment without any additional wiring or ancillary components.
A. The WAI 12780N is supplied without a pulley. You transfer the pulley from your outgoing alternator directly onto this unit, which preserves existing drive-belt alignment and avoids any additional parts cost.
A. It is brand new. There are no reconditioned or remanufactured components — brushes, bearings and windings are all new from the outset.
A. The WAI 12780N delivers 90 amps at 12 volts with clockwise rotation, matching the original Bosch IR/IF specification for the John Deere applications it covers.
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.
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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