John Deere
John Deere 4039
4000 Series
John Deere 4039 3.941 L L4 Turbocharged Intercooled diesel engine. EPA annual certification data lists 86-126 kWm at 1800 RPM. U.S. EPA Final Tier 4.
Overhaul & repair parts- Manufacturer files
- No datasheet
- Last updated
- 2026-07-25
- Package route
- diesel generator sets
- Mechanical Output
- 126 kW
- Cylinders
- L4
- Displacement
- 3.941 L
- Rated Speed
- 1,500 RPM
Ask about John Deere 4039
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John Deere 4039 overhaul & repair parts
Already running a John Deere 4039? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
Reviewed part-number references
A starting point for identification. Fitment must be confirmed before ordering.
- Oil filter223604
John Deere oil filter
Fitment check: TP-5434 Group 10a is labeled "Engine model 4039 only" and assigns oil filter 223604 to both 4039 variations 1 and 2; the adjacent 4045 variation 8803 uses a different filter. Confirm the complete engine nameplate, serial number, installed filter, and current John Deere supersession before ordering.
Source: John Deere Engine Parts Manual TP-5434
Selected references only; this is not a complete overhaul list or a stock listing.
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John Deere 4039 generator set context
The John Deere 4039 is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 126 kW / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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Technical Specifications
| Brand | John Deere |
| Model | 4039 |
| Series | 4000 Series |
| Configuration | L4 Turbocharged Intercooled |
| Cylinders | 4 |
| Displacement | 3.941 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Final Tier 4 |
| Certifications | U.S. EPA Final Tier 4 |
| Country of Origin | United States |
Frequently asked questions
What fuel does the John Deere 4039 use?
The John Deere 4039 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 4039?
The John Deere 4039 is an inline-4 (4-cylinder) engine with a displacement of 3.941 L.
What emissions information is listed for the 4039?
This record lists U.S. EPA Final Tier 4 for the John Deere 4039. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the John Deere 4039?
The John Deere 4039 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.