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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: 12398N-OE
The WAI 12398N-OE is a brand-new 24V 55A alternator. It is built to the Lucas A127MT IR/EF design, replacing original-equipment units from Bosch, Perkins, Valeo, Prestolite Electric, Motorola, and DRI across 19 cross-referenced part numbers. It is designed for heavy-duty agricultural and plant applications, with confirmed fitment on Perkins various models (1979 and back).
Constructed to the A127MT internal-regulator/end-frame specification, the 12398N-OE delivers a regulated 55A output at 24V — the correct rating for commercial-voltage electrical systems on Perkins-engined plant and agricultural equipment. Bi-directional rotation means the unit fits both clockwise and anticlockwise drive configurations without modification, and the groove pulley accepts standard multi-rib or V-belt drives as used on the original Lucas fitment.
As a direct OE replacement, this alternator cross-references Bosch USA AL5004N, Perkins 2871A651 and 47020090, Valeo 2960000, 2510845A and 2938550A, Prestolite Electric 66021593, Motorola 9AR6000G, 510-845, 510-860, 510-864 and further numbers — 19 references in total. Buyers searching by the most-requested numbers Valeo 2960000 and Motorola 9AR6000G will find this is the correctly cross-referenced replacement.
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| Type | Alternator |
|---|---|
| Manufacturer | Lucas |
| Design | A127MT IR/EF |
| Voltage | 24V |
| Output | 55A |
| Rotation | Bi-directional |
| Pulley | Groove 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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| Technical Specification | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | A4011 | A4012 | A4014 | A4108 | A4113 | A4117 | 12428N | 8826N | 12090N | 12365N | 12429N |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 12 | 12 | 12 | 12 |
| Output Current | 55 | 70 | 70 | 55 | 70 | 36 | 30 | 36 | 55 | 72 | 70 |
| Design | IR/EF | IR/EF | IR/EF | IR/EF | A127 IR/EF | ||||||
| Manufacturer | Lucas | Lucas | Lucas | Lucas | Lucas | ||||||
| Pulley | AP | AP | AP | AP | AP | AP | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley |
| Rotation | CW | CW | CW | CW | CW | ||||||
A. The WAI 12398N-OE crosses to 19 OE references in total, including Bosch USA AL5004N, Valeo 2960000, Valeo 2510845A, Valeo 2938550A, Perkins 2871A651, Perkins 47020090, Prestolite Electric 66021593, Motorola 9AR6000G, Motorola 510-845, Motorola 510-860, Motorola 510-864, Motorola 510845, Motorola 510860, Motorola 510864, Motorola 9AR3855G, Motorola 9AR3959G, DRI 519104404, Hella 8EL737276001, and Valeo 2939590. If you are searching by Valeo 2960000 or Motorola 9AR6000G — the two most commonly looked-up numbers for this unit — this is the correctly cross-referenced replacement. You can also search our cross-referenced catalogue by OEM number to confirm, or ask Simon if you need further guidance.
A. Fitment is confirmed for Perkins various models built up to and including 1979. The total confirmed application count for this part is 1 Perkins application on record. To verify your specific engine variant and serial number, use the selection widget to match your machine, or search our cross-referenced catalogue by model. Every fitment shown is backed by our Fit Guarantee.
A. Yes. Bosch USA AL5004N is one of the 19 OE cross-references confirmed for the WAI 12398N-OE. If your machine currently carries a unit listed as Bosch AL5004N, this WAI alternator is the cross-referenced direct replacement. For any doubt on fitment, ask Simon or search our catalogue by that OE number.
A. The 12398N-OE operates at 24V with a 55A output, built to the Lucas A127MT IR/EF (internal regulator, end-frame) design. Rotation is bi-directional, so it suits both clockwise and anticlockwise drive arrangements, and it is fitted with a groove pulley for standard belt drives. It is supplied brand new.
A. Yes to both. Valeo 2960000, Valeo 2510845A, Valeo 2938550A, and Valeo 2939590 are all included within the 19 confirmed OE cross-references for the WAI 12398N-OE. If your original unit carries any of these Valeo numbers, this alternator is the confirmed OE-equivalent replacement.
A. The 12398N-OE is a direct OE replacement to the A127MT IR/EF specification, which means it is designed to swap in place of the original unit without modification. Bi-directional rotation removes the need to verify drive direction before fitting. That said, alternator replacement on plant and agricultural machinery typically requires basic electrical competence — if you are unsure, a qualified engineer or auto-electrician is recommended. Ask Simon if you have pre-fitting technical questions.
A. The WAI 12398N-OE is brand new — not remanufactured, reconditioned, or exchange. No core return is required.
A. Yes. The 12398N-OE is specified as bi-directional, meaning it operates correctly with either rotation direction. This is particularly useful on Perkins-engined plant and agricultural equipment where drive configuration can vary by application.
A. Warranty details are shown in the product tech specs or datasheet where available. Contact us if warranty is not stated on the listing.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
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