John Deere 8850 Tractor Parts
8850 parts and accessories
The John Deere 8850, manufactured from 1981 to 1984, was a powerful and innovative four-wheel drive tractor. Powered by a 370 HP Cummins V8 diesel engine, it delivered substantial power to the drawbar and PTO. With around 300 PTO horsepower, the 8850 became popular among farmers needing reliable performance for demanding tillage operations, excelling in large-acreage applications due to its robust design.
The John Deere 8850 was introduced in 1981 as a part of John Deere's high-horsepower tractor lineup, and production continued until 1984. It was designed to meet the growing demand for larger and more powerful tractors capable of handling increased farm sizes and heavier implements. The 8850 is equipped with a Cummins V8 diesel engine producing approximately 370 horsepower, with a displacement of 903 cubic inches (14.8 liters). The tractor utilizes a 12-speed manual transmission, offering a range of gear selections for various field operations. Its PTO delivers around 300 horsepower and offers both 540 and 1000 RPM options. The hydraulic system has a flow rate of approximately 36 gallons per minute, and multiple remote valves are available. It features a Category III 3-point hitch, with a lift capacity around 9,800 lbs. The John Deere 8850 was frequently employed in row crop operations, tillage, and heavy cultivation. Distinguishing it from other models in John Deere's lineup during that era was its robust four-wheel-drive system and high horsepower, placing it among the top-tier tractors for handling large-scale farming tasks.
Specifications
| Engine | Cummins V8 370 HP Diesel |
|---|---|
| PTO HP | 300 HP @ 1000 RPM |
| Transmission | Manual 12-speed |
| Hydraulics | 36 GPM, 3 remotes |
| 3-Point Hitch | Category III, 9,800 lbs |
| Fuel Capacity | 212 gallons |
| Weight | 35,000 lbs |
| Years Produced | 1981-1984 |
Maintenance Tips
- Change engine oil and filter every 250 hours using the recommended oil type to ensure optimal engine lubrication and longevity.
- Inspect hydraulic fluid levels and filters regularly, replacing filters every 500 hours, to prevent contamination and maintain hydraulic system performance.
- Check and clean the fuel filter regularly, especially after periods of inactivity, to ensure a clean fuel supply and prevent fuel system issues.
- Before seasonal storage, drain the fuel tank, add fuel stabilizer, and grease all lubrication points to protect the tractor from rust and corrosion during periods of non-use.
History & Background
The John Deere 8850 represented a significant step in high-horsepower tractor design during the early 1980s. Introduced to meet the needs of increasingly large farming operations, it offered a level of power and capability that was highly sought after. While not undergoing any major redesigns during its short production run, it left a lasting impact on agricultural practices, showcasing the potential of large articulated tractors.
Frequently Asked Questions
What engine is in the John Deere 8850?
The John Deere 8850 is powered by a Cummins V8 diesel engine, producing approximately 370 horsepower with a displacement of 903 cubic inches (14.8 liters).
What is the PTO horsepower on a 8850?
The PTO horsepower of the John Deere 8850 is approximately 300 horsepower at 1000 RPM. It also supports a 540 RPM PTO shaft.
What oil filter fits the 8850?
The John Deere 8850 typically uses a John Deere AR50041 oil filter or cross-references to brands like Wix 51791, Fleetguard LF3349, or Baldwin BD103. Consult your parts manual for the exact replacement.
What are common parts needed for the 8850?
Common parts needed for the John Deere 8850 include engine oil filters, fuel filters, hydraulic filters, air filters, fan belts, hydraulic seals, steering components such as tie rod ends, and clutch components like clutch discs and release bearings.

RE23286 - PTO Clutch Disc
SKU: RE23286
775 in stock

R99556 - Neutral Start Switch Pin
SKU: R99556
Out of stock

R99386 - Clutch Valve Housing Gasket
SKU: R99386
58 in stock

R708 - (.182" X 1.171") Rivets
SKU: R708
5454 in stock

R70027 - PTO Clutch Pack C3 C2 Return C1 Spring
SKU: R70027
183 in stock

R53169 - Transmission / Hydraulic Oil Pump; Nylon Screen
SKU: R53169
158 in stock

R52169 - Brake Operating Rod Guide
SKU: R52169
143 in stock

R51676 - Wavy .09" Thick Separator Plate
SKU: R51676
39 in stock

R50152 - Brake Piston & Clutch Drum Plate
SKU: R50152
209 in stock

R46416 - Planetary Brake B2 & B4 Plate
SKU: R46416
115 in stock

R39304 - Packing (2 PK) Washer
SKU: R39304
383 in stock

R39259 - Brake Piston & Clutch Drum Plate
SKU: R39259
74 in stock

R161382 - Shift Lever Knob
SKU: R161382
2092 in stock
R110464 - Metallic Brake Pads
SKU: R110464
800 in stock

JD8804 - Needle Bearing
SKU: JD8804
2100 in stock

D1761 - (.182" X .481") Rivets
SKU: D1761
14823 in stock

AR87999 - Syncronizer Disc Kit
SKU: AR87999
17 in stock

AR389R - Shifter Cam Shaft Seal
SKU: AR389R
28 in stock

AR31946 - Brake Valve Overhaul Kit
SKU: AR31946
1098 in stock

AR28488 - Fiber Brake Pad (3/Bag)
SKU: AR28488
534 in stock
RE156640 - Oil Restriction Sensor
SKU: RE156640
34 in stock

RE12180 - PTO / Eng Speed Sensor; Magnetic Pickup
SKU: RE12180
126 in stock

R51937 - Injector Nozzle Nut
SKU: R51937
614 in stock

R51936 - Injector Lines Grommet
SKU: R51936
12010 in stock
