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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: 12778N
The WAI 12778N is a brand-new 12V 60A alternator. It is built to the Denso IR/IF specification, replacing Denso original-equipment units including 102211-5060 and 102211-5061, and the Isuzu equivalents 8-97168-246-1, 8971682460 and 8971682461 — seven cross-references in total. It is designed for Isuzu industrial and plant engines across six applications spanning the 4BG1 and 6BG1 engine families from 1988 to 2007.
The alternator features a clockwise rotation and a groove pulley, with an internally regulated, internally field-excited (IR/IF) design that keeps the regulator housed within the unit itself for a clean, self-contained installation. At 60 amps output on a 12-volt system, it delivers a solid charge for the demanding electrical loads of plant and agricultural machinery.
Supplied brand new, this unit matches the original Denso specification to which these engines were built, making it a direct-fit replacement rather than a reconditioned or remanufactured alternative.
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| Type | Alternator |
|---|---|
| Manufacturer | Denso |
| Design | IR/IF |
| Voltage | 12V |
| Output | 60A |
| Rotation | CW |
| Pulley | Groove Pulley |
| Condition | Brand New |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
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Standard Delivery: £5.49
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. Yes. The WAI 12778N is cross-referenced to four Denso original-equipment numbers: 102211-5060, 102211-5061, Denso OEM 1022115060 and Denso OEM 1022115061. If you are sourcing a direct replacement for any of these Denso references, use our cross-referenced catalogue to confirm the match or ask Simon. Every fitment shown is backed by our Fit Guarantee.
A. This unit replaces three Isuzu original-equipment references: 8-97168-246-1, 8971682460 and 8971682461. Search our catalogue by any of these Isuzu numbers to verify the fit for your machine, or ask Simon if you need further confirmation.
A. The WAI 12778N covers six Isuzu engine applications: the 4BG1, 4BG1T and 4BG1TC (1990–2007) and the 6BG1, 6BG1T and 6BG1TC (1988–2007). Use the selection widget to match your specific engine variant and year, or search by OEM number to confirm fitment. Every application listed is backed by our Fit Guarantee.
A. The WAI 12778N is a brand-new 12V, 60-amp alternator with an IR/IF (internally regulated, internally field-excited) design built to Denso specification. It has clockwise rotation and a groove pulley, making it a self-contained, direct-fit replacement unit.
A. IR/IF stands for Internal Regulator / Internal Field. This means both the voltage regulator and the field excitation circuit are housed inside the alternator body itself, rather than being external components. The WAI 12778N uses this design to match the original Denso specification on the Isuzu 4BG1 and 6BG1 engine families.
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.
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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