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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: 12107N
The WAI 12107N is a brand-new 12V 55A alternator. It is built to Hitachi IR/EF specification, replacing original-equipment Hitachi units including LR155-20, LR155-20B and LR15520. It carries 15 OE cross-references in total, covering Hitachi, Yanmar, Remy, Prestolite Electric, AD Kuhner, DRI, Farcom, Hella, Herth+Buss Jakoparts and Sando part numbers, making it straightforward to verify against an existing unit before ordering.
Fitted with a groove pulley and engineered to the internal regulator/external fan (IR/EF) design, the 12107N delivers consistent 55-amp output suited to the electrical demands of the applications it covers. Being brand new rather than remanufactured means there are no wear-accumulated components to consider — every unit leaves the factory to original specification.
In terms of fitment, the 12107N is confirmed for the Yanmar 4JM-7Z (1982-on). The full application list and all 15 OE cross-references are searchable in the PartsForMachines catalogue; if your machine is not immediately listed, cross-referencing the Yanmar OE number 129772-77200 or the Hitachi number LR155-20 will confirm suitability quickly.
About PartsForMachines:
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 | Hitachi |
| Design | IR/EF |
| Voltage | 12V |
| Output | 55A |
| 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 | 21832N | 23801N | A2022 | A2120S | 12113N | 12118N | 12129N | 12275N | 14231N | 12114N | 12278N | 12288N | 14105N | A2022(P) | A2022(P-INA) |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 12 | 12 | 12 | ||
| Output Current | 100 | 100 | 100 | 80 | 25 | 40 | 35 | 55 | 35 | 20 | 50 | 35 | 35 | ||
| Design | IR/IF | IR/IF | IR | IR/EF | IR/EF | IR/EF | Mitsubishi IR/EF | IR/EF | IR/EF | IR/EF | ER/EF | ||||
| Manufacturer | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | Hitachi | ||
| Pulley | SC6 | S6 | AP | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley | Groove Pulley | |||
| Rotation | CW | CW | CW | CW | CW | CW | CW | CW | CW | CW | |||||
A. The WAI 12107N replaces Hitachi original-equipment numbers LR155-20, LR155-20B, LR15520 and LR15520B, among others. There are 15 OE cross-references in total for this part, covering Hitachi, Yanmar, Remy, Prestolite Electric, AD Kuhner, DRI, Farcom, Hella, Herth+Buss Jakoparts and Sando. Search our cross-referenced catalogue by any of those OE numbers to verify suitability, or ask Simon if you need further confirmation.
A. Yes. YANMAR 129772-77200 (also listed as Yanmar 12977277200) is one of the 15 OE cross-references confirmed for the WAI 12107N. The unit is additionally confirmed for the Yanmar 4JM-7Z application (1982-on). Use the selection widget or search by OE number in our catalogue to check your specific machine, and every fitment shown is backed by our Fit Guarantee.
A. The WAI 12107N is confirmed for the Yanmar 4JM-7Z (1982-on). The full application list is available in our cross-referenced catalogue — search by machine model or by OE number such as Yanmar 129772-77200 or Hitachi LR155-20. If your Yanmar model is not immediately listed, ask Simon or use the selection widget, and every verified fitment is backed by our Fit Guarantee.
A. The WAI 12107N is a brand-new 12V, 55A alternator built to Hitachi IR/EF (internal regulator / external fan) design. It is fitted with a groove pulley. Full specification details are shown in the spec table on this listing.
A. Yes — Remy RA00121 is one of the 15 OE cross-references listed for the WAI 12107N, confirming it as a direct replacement for that Remy unit. Search by OE number in our catalogue or ask Simon to confirm fit for your application.
A. The WAI 12107N is brand new. It is not a remanufactured or reconditioned unit, so there are no previously accumulated wear components — the alternator is built to original specification from new parts.
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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