Alternator 1012111360 12V 50A 1PK Kubota Yanmar Tractor
Applicable models:KUBOTA,D1503 D1403 D1703 D1803 YANMAR 3120 3320 3520 4200 4TNV88 KX1612,KX612,L2900DT
Reference part number:3120 3320 3520 4200 4TNV88 12942377200 12942377210 129423-77210 129423-77200 101211-1360 1012111360 T1060-15680 T106015680 T1060-15681 T106015681 T1060-15682 T106015682
| Rated output : | 12V 50A |
| Pulley : | 1PK |
| Size : | 24*18*17 single unit inner box |
| Weight : | net weight：3.1KG gross weight：3.25G |
| Packaging : | Neutral kraft paper packaging |
| Spot/Pre sale : | Spot goods |
| Warranty : | 1 year |
| Product number : |
| Type : | ACgenerator Alternator |
| Specification : | 12V 50A |
| Pulley : | 1PK |
| Brand : | nuojin |
| Number : | 1012111360 |
| Quality : | new |
| Delivery time : | 10 day |
Product Attributes
| Rated output | 12V 50A |
| Pulley | 1PK single V-groove |
| Size | 24*18*17 CM single unit inner box |
| Weight | net weight: 3.1KG gross weight: 3.25KG |
| Packaging | Neutral kraft paper packaging |
| Spot/Pre sale | Spot goods |
| Warranty | 1 year |
Product Details
| Type | AC generator Alternator |
| Specification | 12V 50A |
| Pulley | 1PK single V-groove |
| Brand | nuojin |
| Part Number | 1012111360 |
| Quality | new |
| Delivery time | 10 days |
Product Overview
The 1012111360 is a Denso-pattern replacement alternator delivering 12V 50A output with a single V-groove (1PK) pulley, engineered for Kubota and Yanmar diesel tractors, compact loaders and mini excavators. This brand-new aftermarket unit matches the original charging-system specification of these agricultural and construction machines.
Fitted with a built-in voltage regulator and designed for clockwise rotation, this alternator is stocked in-house with a 1-year warranty and 10-day dispatch lead-time. The 50-amp rating is factory-correct for the stock electrical load of these diesel machines, supporting starting-system recharging, lighting, and instrument panel loads.
Key physical specs: net weight 3.1 kg, gross weight 3.25 kg, overall dimensions 240 x 180 x 170 mm, supplied inside neutral kraft inner carton.
The Kubota and Yanmar Diesel Platform and 50A Charging System
Kubota and Yanmar diesel engines share a compact charging-system architecture, with single V-belt driven alternators, built-in regulators and clockwise rotation. This unit is developed in accordance with Kubota and Denso original specifications, with fully matched mounting holes, interfaces and pulleys, requiring no modification for installation.
This unit is specified as 12V 50A, matching the factory charging-system specification of these platforms. The single V-groove pulley matches the original single V-belt accessory drive. Installing a multi-rib pulley on a single V-belt drive will cause belt mis-tracking, slippage, premature belt wear and charging faults. Always cross-check against your old alternator before ordering.
With a built-in voltage regulator, the alternator delivers stable power output and is suited to the harsh working conditions of construction and agricultural machinery, providing a cost-effective alternative to original dealer parts while retaining a 1-year warranty.
Technical Specifications
| Parameter | Specification |
|---|---|
| Kubota OE numbers | 129423-77200, 12942377200, 129423-77210, 12942377210 |
| T1060 cross numbers | T1060-15680, T106015680, T1060-15681, T106015681, T1060-15682, T106015682 |
| Voltage | 12V (nominal 12V system, operating voltage approx. 14V) |
| Amperage | 50A |
| Pulley | 1 groove, single V-belt, diameter 63-68mm |
| Rotation | Clockwise |
| Regulator | Built-in |
| Type | Denso model |
| Quality | NEW |
| Warranty | 1 year |
| Net Weight | 3.1kg |
| Gross Weight | 3.25kg |
| Dimensions | 240 x 180 x 170mm |
| Packaging | Neutral kraft box |
| Lead Time | 10 days, in stock |
Engine Compatibility
This alternator fits the following Kubota compact tractors, compact loaders and mini excavators, plus Yanmar engines. Do not rely solely on machine model name for fitment validation; always verify engine code, old-part OE number, pulley type and amp label on your original alternator.
| Machine / Engine | Engine Code | Power | Years |
|---|---|---|---|
| Kubota L2600DT/F | D1403AE | 27HP | - |
| Kubota L2800DT/F/HST | D1403ME2A | 29HP | - |
| Kubota L3830 Series | D1803ME | 39HP | - |
| Kubota L39 | D1803TLB | 39HP | 2003-2009 |
| Kubota L3940 Series | V2006-M-E2 | 40.5HP | 2007-2008 |
| Kubota L4240 Series | V2203-M-E2 | 44HP | 2007-2008 |
| Kubota L4300DT/F | V2203A | 45.3HP | 2001-2004 |
| Kubota L4330 Series | V2203MAE | 41HP | - |
| Kubota KX91-3 Excavator | D1503MEBH | 28HP | 2002-2010 |
| Kubota KX1612 / KX612 | D1503 family | - | - |
| Kubota L2900DT | D1403 / D1503 family | - | - |
| Yanmar 3120 / 3320 / 3520 / 4200 | 4TNV88 | - | - |
Multiple Kubota, Yanmar and supplier part numbers appear across production batches and regional market specifications for this same alternator family. If your original unit bears one of the listed cross-reference numbers, 1012111360 serves as a direct drop-in replacement.
What to Look for in a Replacement
Follow these five verification steps before placing your order to avoid wrong-part returns:
1. Check the amperage label on your old alternator: confirm it is rated for 50A. Different amp ratings are not interchangeable.
2. Confirm the pulley is a single V-groove (1PK) with 63-68mm diameter; this unit fits single V-belt drives only.
3. Confirm the exact Kubota or Yanmar engine code (for example D1403, D1503, D1803, V2203, 4TNV88) of your machine.
4. Match against OE / reference part numbers stamped on your original housing.
5. Weight cross-check: genuine matching unit weighs approximately 3.1 kg net; significant weight difference indicates wrong assembly.
Application Scenarios
Independent tractor and construction-equipment workshops servicing Kubota and Yanmar machines across Europe, North America, Asia-Pacific, Latin-America, the Middle East and Africa.
Agricultural equipment parts suppliers stocking charging-system components for compact tractors.
Compact-loader and mini-excavator fleet owners maintaining Kubota and Yanmar diesel engines.
Farmers and contractors replacing worn alternators on Kubota L-Series and Yanmar-powered equipment.
Machinery rebuilders restoring original-spec charging systems on older Kubota models.
FAQ
Q: Which machines does this alternator fit?
A: It fits Kubota compact tractors, compact loaders and mini excavators using the D1403, D1503, D1703, D1803, V2006 and V2203 engine families, plus Yanmar machines using the 4TNV88 engine. Always verify against the OE number, pulley and mounting layout of your original alternator before ordering.
Q: My old alternator shows OE number 129423-77200 or T1060-15682, will 1012111360 work?
A: Yes. These numbers belong to the same alternator family, differing only by production revision and market specification. It serves as a direct replacement.
Q: Is this a single V-belt alternator?
A: Yes. This unit has a single V-groove pulley (1PK) of 63-68mm diameter for single V-belt drives. It will not fit multi-rib belt systems.
Q: What is the normal charging voltage after installation?
A: With the engine running, output voltage should read approximately 13.8V-14.5V on this nominal 12V system.
Q: What is your warranty and lead-time?
A: Goods are in stock with a 10-day dispatch lead-time. A 1-year warranty applies from installation date; warranty excludes damage caused by mis-installation, wrong belt tension, or machine-wiring faults.
In Practice
For technicians working on Kubota and Yanmar diesel machines: Before removing the existing alternator, perform charging-system diagnostics. Measure battery terminal running voltage with a multimeter. Weak batteries, corroded ground connections or a faulty main harness can mimic alternator failure symptoms. Always disconnect the battery negative terminal before commencing removal work.
Take photos of wiring connectors and bolt positions during disassembly to avoid mis-routing during reassembly. Observe correct belt tension: 10-15 mm deflection when pressing the belt mid-span. Over-tightened belts accelerate alternator bearing wear; loose tension creates slipping and insufficient charging. Torque mounting bolts to the machine workshop-manual specifications.
Inexperienced home mechanics are recommended to entrust replacement work to a qualified agricultural-machinery electrician. Incorrect wiring risks burning the alternator or machine electrical components.
References
Vehicle and engine applications are compiled from the original equipment fitment data for the 1012111360 alternator family covering the Kubota and Yanmar models listed in the Engine Compatibility table, verified against actual installation tests and after-sales maintenance experience.
