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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: 12148N
Find the right Starter Motor & Alternator for your Machine
Starter Motor & Alternator FinderThe WAI 12148N is a brand-new 24V 45A alternator. It is built to Bosch IR/EF specification, cross-referenced against 51 original-equipment references from Bosch, Cummins, Remy, Case, Iskra, Mahle, and others. It is designed as a direct replacement for worn or failed alternators across a broad spread of heavy plant and agricultural machinery, covering 71 applications in total across John Deere, Case, Komatsu, and Bell equipment.
Constructed to IR/EF (internal regulator, external fan) design, the 12148N delivers bi-directional rotation, allowing fitment without concern for drive orientation. It is supplied without a pulley, so the original pulley is transferred from the unit being replaced — preserving the correct belt alignment and drive ratio for the specific machine. At 24V and 45A output, the alternator suits the electrical demands of the diesel-powered heavy machinery it serves.
Applications span a wide range of plant and construction equipment. Case alone accounts for 19 applications, including the 1085B, 1086B, 1150E, 1150G, 1155E, and 1187C Feller Buncher. John Deere represents the largest fitment group at 47 applications, with Komatsu (3) and Bell (2 — the 670CH and 770CH) completing the range.
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| Type | Alternator |
|---|---|
| Manufacturer | Bosch |
| Design | IR/EF |
| Voltage | 24V |
| Output | 45A |
| Rotation | Bi |
| 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...
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Delivery Estimate: 1 to 2 working days
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| Technical Specification | |||||||
|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 12147N | 12130N | 12161N | 12134N | 12587N | A0185 | A9246(LETRIKA) |
| Voltage | 24 | 12 | 12 | 24 | 24 | 24 | |
| Output Current | 45 | 55 | 65 | 35 | 55 | 50 | |
| Design | IR/EF | IR/EF | IR/EF | (Iskra) IR/EF | IR/EF | ||
| Manufacturer | Bosch | Magneton | Bosch | Letrika | Bosch | Bosch | Letrika |
| Pulley | Without Pulley | Groove Pulley | Without Pulley | Groove Pulley | |||
| Rotation | CW | CW | CW | CW | |||
A. This alternator covers 71 applications across John Deere (47 applications), Case (19 applications), Komatsu (3 applications), and Bell (2 applications — the 670CH and 770CH, 1997–2006). Case applications include the 1085B, 1086B, 1150E, 1150G, 1155E, and 1187C Feller Buncher, among others. Use the selection widget to match your exact make, model, and engine, or search our cross-referenced catalogue by machine model — every fitment shown is backed by our Fit Guarantee.
A. Yes. The WAI 12148N is cross-referenced against Bosch 0 120 488 206, Bosch 0 120 488 294, Bosch 0 120 489 071, Bosch 0120488206, Bosch 0120488294, Bosch 0120489071, Bosch 0986043257, and Bosch USA AL9940X, among 51 OE references in total. Search our cross-referenced catalogue by your Bosch part number to confirm this is the correct replacement for your unit.
A. Yes. The 12148N cross-references Cummins 3020678 and Remy references Remy 19020536 and Remy 50950. The full OE reference list covers 51 numbers across brands including Case (Case A187916, Case AR187916, Case P941542), Iskra (Iskra AAK1387, Iskra IA0759), Mahle Original (Mahle Original MG84), and others. Search by your existing part number to verify the match.
A. John Deere accounts for 47 of the 71 applications covered by the WAI 12148N. To confirm whether your specific John Deere model and engine variant is among them, use the selection widget with your make, model, and engine, or search the catalogue by OEM number. Every fitment is backed by our Fit Guarantee.
A. The WAI 12148N is supplied without a pulley — you reuse the pulley from the unit you are replacing to maintain the correct belt alignment for your machine. It features bi-directional rotation (marked 'Bi'), so it is compatible with both clockwise and anti-clockwise drive arrangements without modification.
A. IR/EF stands for Internal Regulator and External Fan. The voltage regulator is housed inside the alternator body rather than mounted externally, and the cooling fan sits on the outside of the unit. This is the same design as the original Bosch-specification alternator it replaces, so no additional wiring or bracket modifications are needed beyond a like-for-like swap.
A. The WAI 12148N is brand new — not remanufactured or reconditioned. It is built to the original Bosch IR/EF specification with no exchange surcharge or core return required.
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 — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
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