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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: 20059N
The WAI 20059N is a brand-new 24V 35A alternator. It is engineered to replace Mitsubishi original-equipment units — including references A003TA8199, A3TA8199 and ME108147 — and Caterpillar reference 1397850. Built to an internal regulator/internal fan (IR/IF) design with clockwise rotation and a groove pulley, it is a direct-fit solution for Caterpillar agricultural and industrial machinery across 11 recorded applications.
Supplied brand new rather than remanufactured, the 20059N delivers a clean 35 amp output at 24 volts, matching the original specification precisely. The IR/IF configuration keeps the voltage regulator self-contained within the unit, eliminating the need for an external regulator and simplifying installation. Clockwise rotation and the groove pulley ensure compatibility with the original drive belt arrangement, so the alternator drops straight in without modification.
Verified fitment includes Caterpillar mini excavators and compact machines such as the 305, 305.5, 306, 307B, 307C, 307C SB, 307D and 308C — spanning model years from 2002 to 2014. The cross-reference list also includes AD Kuhner numbers 553771 and 553771RI for workshop cross-checking purposes.
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| Type | Alternator |
|---|---|
| Manufacturer | Mitsubishi |
| Design | IR/IF |
| Voltage | 24V |
| Output | 35A |
| 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...
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 11177N | 12626N | 13723N | A5171 | A5226 | A5320 | A5332 | A5397S | A5412S | A5432S | A5444S | 14687N | 20224N | 12132N | 12310N |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 24 | 12 | 24 | 12 | 24 |
| Output Current | 80 | 90 | 80 | 80 | 150 | 45 | 185 | 150 | 185 | 220 | 90 | 35 | 100 | 35 | 40 |
| Design | IR/IF | IR/IF | IR/IF | IR/EF | IR/IF | ER/EF | Mitsubishi IR/EF | ||||||||
| Manufacturer | Mitsubishi | Mitsubishi | Mitsubishi | Mitsubishi | Mitsubishi | Mitsubishi | |||||||||
| Pulley | S5 | V2 | S6 | AP | AFP | AP | AFP-INA | AFP | AFP | AFP | AP | Groove Pulley | Groove Pulley | ||
| Rotation | CW | CW | CW | CW | CW | CW | CW | ||||||||
A. The WAI 20059N replaces Mitsubishi references A003TA8199, A3TA8199 and ME108147. These are the Mitsubishi OE numbers cross-referenced to this unit. To confirm suitability for your machine, use the selection widget or search our cross-referenced catalogue by OEM number — every cross-reference shown is backed by our Fit Guarantee.
A. Yes. Caterpillar reference 1397850 (also listed as CAT 139-7850) is a direct cross-reference for the WAI 20059N. The part fits 11 Caterpillar agricultural and industrial applications, including the 305, 305.5, 306, 307B, 307C, 307C SB, 307D and 308C. Use the selection widget or search by OEM number to verify fit for your specific machine, and every fitment shown is backed by our Fit Guarantee.
A. The WAI 20059N is confirmed for 11 Caterpillar agricultural and industrial applications. The fitment sample includes the 305 Mini Excavator (2011–2013), 305.5 Mini Excavator (2011–2014), 306 Mini Excavator (2011–2012), 307B (2005–2013), 307C (2006–2012), 307C SB (2004–2007), 307D (2007–2011) and 308C (2002–2012). Use the selection widget to match your exact model and year, or ask Simon if your machine is not listed.
A. The WAI 20059N operates at 24 volts with a 35 amp output. It uses an internal regulator/internal fan (IR/IF) design with clockwise rotation and a groove pulley, matching the original Mitsubishi specification. It is supplied brand new.
A. IR/IF stands for Internal Regulator/Internal Fan. It means the voltage regulator is built into the alternator body — no separate external regulator is required. Combined with the clockwise rotation and groove pulley that match the original fitment, the 20059N is designed to install directly in place of the worn unit without additional components or modification.
A. Yes. AD Kuhner references 553771 and 553771RI are listed as cross-references for the WAI 20059N and may be used for workshop identification purposes. In total, seven OE and aftermarket cross-references are held for this part.
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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