Part identification
Reference numbers
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5 verified product photos · Select a thumbnail to change the main image.
Alternators
12V 40A Excavator Alternator 0R-9996 7N-4784 for CAT 3204
OEM / reference0R-9996 7N-4784 · 7N4787 7N6118 0210007360 · CAT 3204
Specification1
Catalog ID50559822
1 reference 0R-9996 7N-4784. Compatibility references include Make: Caterpillar Ag. & Ind. · Model: 910 · Year: 1979-1989 · Engine: D3 Engine, Make: Caterpillar Ag. & Ind. · Model: 931 Trax Cavator · Year: 1985-1990 · Engine: Perkins 4-236, Make: Caterpillar Ag. & Ind. · Model: 931 · Year: 1975-1979 · Engine: Cat. 3204 and 15 additional models listed below. Compare the part number, connector layout, mounting points and the original unit before ordering; machine serial range can affect fitment.
- OEM
- 0R-9996 7N-4784
- Feature
- Excavator Alternator
- Part Number
- 7N4787 7N6118 0210007360
- Slot
- 1
- Detail
- 12V 40A
- Length
- 300mm
- Technical Specification
- 40 Amp/12 Volt, CW, 1-Groove Pulley
- Design
- IR/EF
- Voltage
- 12
- Rated Output
- 40
- Rotation
- CW
- Pulley Class
- V1
- Pulley Note
- 89mm OD
Send the machine model, engine model or nameplate photo so our team can confirm compatibility before shipment.
Product fitment guide
Part numbers and compatible models
Quickly compare the reference number and recorded machine applications. Use the original photos and the checklist before ordering.
Product summary
1
- Category
- Alternators
- Catalog ID
- 50559822
- Photo views
- 5
Before ordering
Confirm these details
- Confirm voltage and rated amperage against the original alternator label.
- Compare mounting ears, pulley type and pulley-groove count.
- Check plug shape, terminal position and regulator connection.
- Verify the engine model and machine serial range before ordering.
Machine fitment
Compatible model references
18 model references
Compatibility lists identify searchable model families, not every production serial range. Confirm the original part number and machine serial number before purchase.
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