Machine type
Self-propelled sprayer
John Deere sprayer ยท 2014-2021
John Deere R4038 Sprayer
The John Deere R4038 is a 1,000-gallon R Series self-propelled sprayer that replaced the 4830 class and introduced a redesigned flat-fold boom and CommandView II cab. It is a 90- to 120-foot boom machine, widely regarded for its balanced chassis, strong ride, and modernized operator environment.
Product tank capacity
3,790 litres
Boom width options
90, 30 or 37 m
Engine
John Deere PowerTech 9.0L diesel, 310 hp
John Deere R4038 specifications
| Production years | 2014-2021 |
|---|---|
| Machine type | Self-propelled sprayer |
| Product tank capacity | 3,790 litres |
| Boom width options | 90, 30 or 37 m |
| Engine | John Deere PowerTech 9.0L diesel, 310 hp |
| Crop clearance | 150 cm, with standard tyres |
| Weight | 13,985 kg dry with 90-ft steel boom |
| Drive | Hydrostatic 4WD with independent-strut air suspension |
What the R4038 is used for
The R4038 is designed for large row-crop acreage needing 3,790 litres of onboard capacity and wide 90-, 100-, or 120-foot coverage. Its 60-inch crop clearance, independent-strut air suspension, and hydrostatic four-wheel drive support consistent travel over varied field conditions.
Owners value the R4038 for its improved cab, flat-fold boom design, weight distribution, and integration with Deere precision equipment of its era. It remains a sought-after used machine when the boom, suspension, electronics, and service history are sound.
Why the John Deere R4038 stands out
The R4038 is notable for moving Deere's 1,000-gallon platform into the R Series with a redesigned flat-fold boom, CommandView II cab, and a 310-hp 9.0L engine. Its ride quality, boom options, and broad dealer familiarity support strong used-market interest for well-maintained units.
Buying a used John Deere R4038
Inspect the steel or carbon-fibre boom, hinges, fold cylinders, breakaways, plumbing, and section valves with exceptional care, including signs of collision or poor repairs. Test the hydraulic product pump, wheel motors, air struts, leveling system, tyres, and steering. Verify the 4600 CommandCenter, rate control, boom-height system, cameras, and any precision options work correctly, and confirm the exact configuration and specifications with the operator manual or Deere dealer.
John Deere R4038 frequently asked questions
What size tank does the John Deere R4038 have?
The R4038 has a 1,000-US-gallon stainless-steel product tank.
What boom widths were offered on the R4038?
Common factory steel-boom options are 90, 100, and 120 feet. Confirm the exact boom on an individual machine.
How much horsepower does an R4038 have?
The commonly cited specification is a 310-hp John Deere PowerTech 9.0L diesel engine.
Specifications are commonly cited figures for general reference; exact figures vary by year and configuration, so confirm against the manufacturer's records and the machine's serial number. Tank capacities, boom widths, weights and dimensions are converted to metric and rounded. Always follow current UK regulations and label instructions for pesticide application; operators must hold the relevant certification. Used sprayer values vary by condition and hours. Page updated 19 Sep 2026.