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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 | £5.49 | 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: 12658N
The WAI 12658N is a brand-new 12V 140A alternator. It is built to the Denso IR/IF design, supplied as a direct replacement for Denso original-equipment units including reference 101211-7780 (also listed as 1012117780). It also cross-references John Deere numbers RE500226 and SE501839, making it a confirmed fitment option for the Ag-Chem 6103 TERRAGATOR (1998–2004).
Constructed to internal regulator / internal fan (IR/IF) specification, the unit delivers a robust 140-amp output at 12 volts with clockwise rotation and is fitted with a groove pulley — matching the mounting and drive configuration of the original Denso equipment it replaces. Being brand new rather than remanufactured, it carries none of the wear concerns associated with exchange units.
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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 | Denso |
| Design | IR/IF |
| Voltage | 12V |
| Output | 140A |
| Rotation | CW |
| Pulley | Groove Pulley |
| Condition | Brand New |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
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Delivery Estimate: 1 to 2 working days
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 13919N | 22925N | 23328N | 13592N | 13919 | 21881N | 23298N | 23820N | A6018 | A6025 | A6052 | A6061 | A6063 | A6077 | A6079 |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | |
| Output Current | 140 | 60 | 125 | 50 | 130 | 120 | 150 | 80 | 100 | 100 | 130 | 120 | 105 | ||
| Design | IR/IF | IR/IF | ER/IF | IR/IF | IR/IF | IR/IF | |||||||||
| Manufacturer | Denso | Denso | Denso | Denso | Denso | Denso | Denso | ||||||||
| Pulley | S6 | S6 | V1 | SC5 | SC6 | AFP | AFP | AFP | AFP | AFP | AP | AFP | |||
| Rotation | CW | CW | CW | CW | CW | ||||||||||
A. This WAI 12658N is confirmed for the Ag-Chem 6103 TERRAGATOR (1998–2004) — 1 application in total. It replaces Denso original-equipment references 101211-7780 and 1012117780, as well as John Deere numbers RE500226 and SE501839. To verify the fit against your specific machine serial number or engine variant, use the selection widget or search our cross-referenced catalogue by OEM number or machine model. Every fitment shown is backed by our Fit Guarantee.
A. Yes. The WAI 12658N is a direct replacement for Denso 101211-7780 (also referenced as Denso OEM 1012117780). Both numbers appear in the verified OE cross-reference data for this part. If you are working from a John Deere parts list, it also covers RE500226 and SE501839.
A. Yes. Both John Deere RE500226 and SE501839 are listed as verified OE cross-references for the WAI 12658N. You can search our catalogue by either number to confirm the match, or ask Simon if you need further assistance.
A. The 12658N is a brand-new Denso-design alternator rated at 12V and 140A output. It uses an IR/IF (internal regulator / internal fan) configuration, rotates clockwise, and is fitted with a groove pulley. Being brand new rather than remanufactured, it requires no core return.
A. This is a brand-new alternator. It is not a remanufactured or reconditioned exchange unit, so there are no core charges or return requirements associated with the purchase.
A. Compatible spares and accessories are shown on the Related Accessories tab of this product page, and common parts across the brands we stock are in our Parts & Spares section.
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.
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