Cart
POPULAR CATEGORY
| 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: 12879N
The WAI 12879N is a brand-new 12V 90A alternator. It is built to Bosch IR/IF specification, designed to replace original-equipment Bosch units including reference 0 124 325 155. It is also cross-referenced against John Deere RE205273, making it a direct-fit replacement for applications where that OE number is specified. Manufactured to Bosch IR/IF design standards, the unit features internal regulation and internal field winding — an arrangement that simplifies installation and reduces the number of external connections required compared with older externally regulated designs.
The alternator delivers 90 amps at 12 volts with clockwise rotation and is fitted with a groove pulley, matching the belt configuration of the original equipment it replaces. As a brand-new unit rather than a remanufactured exchange part, it carries none of the wear history associated with rebuilt cores.
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 | Bosch |
| Design | IR/IF |
| Voltage | 12V |
| Output | 90A |
| Rotation | CW |
| 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...
Standard Delivery: £4.99
Delivery Estimate: 1 to 2 working days
Save Extra With 1 Offer
Compare With Similar Items
Compare with Similar products
|
|||||||||||||||
| 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 12879N is cross-referenced against Bosch 0 124 325 155 and Bosch 0124325155. If either of those Bosch numbers appears on your existing unit or in your parts manual, this alternator is the direct replacement. For any further confirmation, use our cross-referenced catalogue search or ask Simon.
A. Yes — John Deere RE205273 is one of the verified OE cross-references for the WAI 12879N. If your machine's parts list or existing unit carries that reference, this alternator is the specified replacement. Additional cross-references on this part include AD Kuhner 554408 and Powerite Automotive 12879. Search our catalogue by OE number or ask Simon to confirm fit for your specific machine.
A. The WAI 12879N operates at 12V with a 90A output. It uses a Bosch IR/IF (internal regulator, internal field) design, rotates clockwise, and is fitted with a groove pulley. It is supplied brand new.
A. IR/IF stands for Internal Regulator / Internal Field. This means the voltage regulator and field winding are both housed within the alternator body itself, so no external regulator or separate field connection is required. When replacing a Bosch IR/IF unit, you must fit another IR/IF alternator — fitting an externally regulated type would require additional wiring changes. The WAI 12879N matches the original IR/IF architecture of the units it replaces.
A. The WAI 12879N is brand new. It is not a remanufactured or reconditioned exchange part, so there is no core return or exchange deposit involved.
A. Yes — ask Simon, or WhatsApp our team on 07754 288583 with any questions about specifications, suitability, or compatibility.
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.
By sharing your email, you agree to our privacy policy & terms of service
Question about this product? Click here
