Kubota V3800 Engine & M6060, M7060 Tractor Alternator Assembly, 12V 100 Amp | Genuine Kubota 1J431-64013
This is a new, genuine Kubota alternator assembly, part number 1J431-64013, rated 12 V and 100 A. Kubota engine parts catalogs list it for the V3800 engine. Kubota dealer catalogs carry it on M6060 and M7060 tractors, naming the M7060HDC, M7060HDC12 and M7060HFC cab models, and on the M4N-071HD12 and M4N-071HDRC12. It replaces alternator 1J431-64012, which Kubota also used on M8560 and M9960 tractors.
On M7060 cab tractors Kubota lists this 100 A alternator under an optional alternator kit, so not every M7060 carries it. Check the number on your old unit before you order. Replace an alternator when charging voltage stays low with a good battery and clean connections, when the charge light stays on, or when a bearing gets noisy. Test output at the alternator and check the belt and the wiring before you condemn it.
Confirm Fitment Before You Order
This is the 100 A unit; Kubota also sells an 80 A alternator for the same engine series, 1G398-64013, and it is a separate part. On M7060 cab tractors the 100 A alternator belongs to an optional alternator kit, so not every tractor carries it. Send us your engine or tractor model, the serial number and the number on your old alternator (1J431-64012 or 1J431-64013). Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | 1J431-64013 |
| Brand | Kubota |
| Condition | New, genuine, in original packaging |
| Warranty | Kubota genuine parts warranty: 1 year against defects in materials or workmanship. |
| Type | Alternator assembly |
| System voltage | 12 V |
| Output | 100 A |
| Engine | Kubota V3800 |
| Replaces | 1J431-64012 |
| Shipping weight | 12 lb |
Fits / Applications
- Kubota V3800 engine
- Kubota M7060HDC, M7060HDC12 and M7060HFC cab tractors with the optional alternator kit
- Kubota M6060 tractors that carry alternator 1J431-64012 or 1J431-64013
- Kubota M4N-071HD12 and M4N-071HDRC12 tractors
- Kubota M8560 and M9960 tractors that carry the 1J431-64012 alternator this part replaces
- Direct replacement for Kubota alternator 1J431-64012
Disconnect the battery first. Check the belt, belt tension and pulley alignment, clean the ground path, and confirm the plug and terminals match your harness before final tightening.
Part Numbers & Cross Reference
Kubota 1J431-64013 · Kubota (superseded) 1J431-64012
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
Does the 1J431-64013 replace the 1J431-64012?
Yes. Kubota superseded 1J431-64012 with 1J431-64013, and Kubota parts lists for the M7060 and M4N-071 show both numbers in the same position.
Will it fit my Kubota M7060?
Kubota lists it for the M7060HDC, M7060HDC12 and M7060HFC, where it is part of the optional alternator kit. Call 530-668-0818 with your tractor serial number and the number on your old alternator and we will check it.
Will it fit an M8560 or M9960?
Kubota used the older 1J431-64012 on M8560 and M9960 tractors, and this part replaces that number. Send us the tractor serial number and the number on your old alternator and we will confirm it.
Is it new or remanufactured?
New, genuine Kubota.
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Why Buy From Valley Fuel Injection
We are an authorized Kubota dealer and a diesel fuel-injection shop in Woodland, CA, working on diesel engines since 1993. When you call, you talk to people who know Kubota engines, and we check the part number against your engine serial or machine model before anything ships, so the right part arrives the first time. See our Kubota engine sales, parts and service.
UPS Ground anywhere in the lower 48. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax is additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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