Machine type
Self-propelled sprayer
John Deere sprayer ยท 2018-2021
John Deere R4045 Sprayer
The John Deere R4045 is a 1,200-gallon, high-clearance self-propelled sprayer positioned near the top of Deere's 4 Series during the late 2010s. It is known for its 346-hp PowerTech engine, CommandDrive all-wheel-drive system, and boom options up to 132 feet.
Product tank capacity
4,540 litres
Boom width options
90, 100, 37 or 40 m
Engine
John Deere PowerTech PSS 9.0 L diesel, 346 peak rated hp
John Deere R4045 specifications
| Production years | 2018-2021 |
|---|---|
| Machine type | Self-propelled sprayer |
| Product tank capacity | 4,540 litres |
| Boom width options | 90, 100, 37 or 40 m |
| Engine | John Deere PowerTech PSS 9.0 L diesel, 346 peak rated hp |
| Crop clearance | 145 cm with standard tyres |
| Weight | Approx. 11,730 kg base machine; configuration-dependent |
| Drive | CommandDrive hydrostatic all-wheel drive |
What the R4045 is used for
The R4045 is intended for large-scale row-crop coverage where long booms, a 1,200-gallon tank, and 58-inch clearance improve daily productivity. Its chassis and all-wheel-drive system are designed to maintain mobility across rolling, soft, or uneven fields.
Owners appreciate the integrated Deere cab environment, established dealer network, and compatibility with Deere precision-ag equipment. On the used market, it appeals to operators seeking a late-model high-capacity machine with familiar service support.
Why the John Deere R4045 stands out
The R4045 is notable for combining 346 peak rated horsepower, 4,540 litres of capacity, 58 inches of crop clearance, and boom choices to 132 feet. CommandDrive all-wheel drive and Deere's integrated controls are major reasons it remains a desirable used platform.
Buying a used John Deere R4045
Examine boom trusses or carbon-fibre components, hinges, fold mechanisms, breakaways, and height-control sensors for damage or poor repair. Verify pump performance, solution plumbing and valves, wheel motors, tyres, suspension, engine hours and maintenance records, and full function of the 4600 CommandCenter, guidance, and SprayStar rate-control equipment.
John Deere R4045 frequently asked questions
What is the John Deere R4045 tank capacity?
The R4045 carries a 1,200-US-gallon product tank.
How much horsepower does an R4045 have?
The R4045 uses a John Deere PowerTech PSS 9.0-liter diesel with 346 peak rated horsepower.
What is the crop clearance of an R4045?
Commonly cited clearance is 58 inches with standard tyres. Confirm tyre-specific clearance in the operator manual or with a dealer.
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.