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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: 10939N
The WAI 10939N is a 12V 20A alternator for plant and agricultural machinery, with verified applications covering John Deere.
Fitment data spans 5 listed applications, including the John Deere 1070 (1991-1996) and the John Deere 670 (1991-1996). Cross-references cover 10 OE and aftermarket part numbers across Yanmar, John Deere and AD Kuhner, so positive identification is straightforward whether you are working from a machine model or an existing part number.
The 10939N supplies steady charging current to the battery, lighting and onboard electronics, helping to maintain reliable electrical system operation. Built to withstand vibration, heat and demanding use, it features OE-style mounting points and durable, corrosion-resistant construction, and installs as a direct-fit replacement. Each unit is tested for voltage regulation, endurance and load performance.
The 10939N is covered by a 24-month warranty against manufacturing defects.
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.
| Brand | WAI |
|---|---|
| Manufacturer part number | 10939N |
| Type | Alternator |
| Voltage | 12 Volts |
| Amperage | 20 Amps |
| Item Weight | 7 kg |
| Dimensions | 20.32 x 17.78 x 17.78 cm; 7 Kilograms |
| 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
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| Technical Specification | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PRODUCT NUMBER | 14482N | 20539N | 21610N | 23853N | 21173N | 22155N | 23791N | 8440N | A4033 | A4058 | A4072 | A4084 | A4085 | A4103 | A9012 |
| Voltage | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| Output Current | 120 | 124 | 90 | 90 | 110 | 90 | 100 | 105 | 70 | 80 | 70 | 85 | 110 | ||
| Design | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | IR/IF | |||||||||
| Manufacturer | Marelli | Marelli | Electroprecizia | VISTEON | Marelli | Ford | Mando | Ford | |||||||
| Pulley | COUPLER | S6 | S6 | SC7 | S6 | AP | AP | AP | AP | AP | AP | ||||
| Rotation | CW | CW | CW | CW | |||||||||||
A. Fitment data for the WAI 10939N covers John Deere — 5 listed applications, including the John Deere 1070 (1991-1996), the John Deere 670 (1991-1996) and the John Deere 770 (1991-1996). Use the selection widget to match your make, model and engine, or search our cross-referenced catalogue by OEM number or machine model — or ask Simon. Every fitment shown is backed by our Fit Guarantee.
A. The 10939N cross-references 10 OE and aftermarket part numbers, including Yanmar 11991077200 and 12915077201, and John Deere MIA10338 and SE501822. If you are matching from a parts manual or an existing unit, search our cross-referenced catalogue by OEM number, or ask Simon.
A. The WAI 10939N is a 12V alternator with a rated output of 20A. Full details are listed in the technical specifications on this page.
A. The 10939N is covered by a 24-month warranty against manufacturing defects.
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.
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