John Deere 8520 Tractor Parts
8520 parts and accessories
The John Deere 8520 tractor, manufactured from 2002 to 2005, became a popular choice for farmers needing robust power. Equipped with a John Deere PowerTech 8.1L diesel engine producing around 260 engine horsepower, the 8520 also delivered approximately 225 PTO horsepower. Its reliable performance and versatile capabilities made it a workhorse for various agricultural tasks, especially row crop operations.
The John Deere 8520 was introduced in 2002 as part of the John Deere 8020 series, replacing the earlier 8010 series. Production continued through 2005. Powering the 8520 is a John Deere PowerTech 8.1L 6-cylinder turbocharged diesel engine rated at approximately 260 engine horsepower. This engine has a displacement of 496 cubic inches (8.1 liters). The available transmissions included a 16-speed PowerShift transmission for smooth gear changes under load, contributing to efficient field operations. The 8520 boasted a PTO horsepower rating of around 225 hp, available at 1000 RPM, providing ample power for implements. Its hydraulic system delivered a flow rate of approximately 41 GPM to run multiple hydraulic remotes, supporting a range of implements. The 3-point hitch is a Category III/IIIN, capable of lifting approximately 13,000 lbs, making it suitable for heavy tillage equipment. Farmers commonly used the 8520 in row crop applications such as planting, cultivating, and harvesting, as well as for hay production and heavy tillage operations. The 8520 distinguished itself from other models in the 8020 series through its higher horsepower rating and enhanced hydraulic capacity, making it a premium choice for demanding agricultural tasks.
Specifications
| Engine | John Deere PowerTech 260 HP 8.1L Diesel |
|---|---|
| PTO HP | 225 HP @ 1000 RPM |
| Transmission | PowerShift 16-speed |
| Hydraulics | 41 GPM, 4-5 remotes |
| 3-Point Hitch | Category III/IIIN, 13,000 lbs |
| Fuel Capacity | 150 gallons |
| Weight | 22,150 lbs |
| Years Produced | 2002-2005 |
Maintenance Tips
- Check engine oil levels regularly (every 10 hours of operation) and change the oil and filter every 250 hours using John Deere-approved oil and filters.
- Inspect hydraulic oil levels and filter condition every 50 hours; change hydraulic oil and filter every 1000 hours to prevent contamination and maintain optimal performance.
- Use a fuel additive to prevent gelling in cold weather. Always drain water from the fuel/water separator. Clean or replace fuel filters as recommended in the operator's manual.
- Before seasonal storage, completely fill the fuel tank, add fuel stabilizer, change engine oil, and grease all fittings. Disconnect the battery and store it in a cool, dry place.
History & Background
The John Deere 8520 was a key model in the 8020 series, introduced in 2002 to offer farmers a more powerful and technologically advanced tractor. It represented a significant advancement in tractor technology for the time, featuring improved engine performance, transmission options, and hydraulic capabilities, solidifying John Deere's position in the agricultural equipment market.
Frequently Asked Questions
What engine is in the John Deere 8520?
The John Deere 8520 is equipped with a John Deere PowerTech 8.1L 6-cylinder turbocharged diesel engine producing approximately 260 horsepower.
What is the PTO horsepower on a 8520?
The PTO horsepower rating for the John Deere 8520 is approximately 225 horsepower, available at 1000 RPM.
What oil filter fits the 8520?
The recommended oil filter for the John Deere 8520 is a John Deere filter part number RE504836. Cross-references include Wix 57202 and Fleetguard LF9009.
What are common parts needed for the 8520?
Common wear parts for the John Deere 8520 include engine oil filters (RE504836), fuel filters (RE522878), hydraulic filters (RE62419), fan belts, hydraulic cylinder seal kits, steering cylinder repair parts, and clutch components if applicable. Regularly inspect these components for wear and tear to ensure optimal performance.

RE522372 - Spin-on Fuel Filter
SKU: RE522372
349 in stock

RE509672 - Cartridge Lube Filter
SKU: RE509672
477 in stock

RE24619 - Outer Air Filter
SKU: RE24619
206 in stock

RE187966 - Cab Air Filter
SKU: RE187966
45 in stock

LF16043J - Lube (QTY 1) Filter
SKU: LF16043J
Out of stock

LF16043 - Cartridge (QTY 12) Lube Filter
SKU: LF16043
Out of stock

HF6684 - Hydraulic (QTY 1) Filter
SKU: HF6684
Out of stock

HF6552 - Spin-On (QTY 1) Hydraulic Filter
SKU: HF6552
31 in stock

FS19701J - Fuel (QTY 1) Separator
SKU: FS19701J
Out of stock

FS19701 - Fuel (QTY 6) Separator
SKU: FS19701
17 in stock

FS19700J - Fuel (QTY 1) Separator
SKU: FS19700J
Out of stock

FS19688J - Fuel/Water (QTY 1) Separator
SKU: FS19688J
Out of stock

FS19688 - Fuel/Water (QTY 6) Separator
SKU: FS19688
Out of stock

FF5768J - Cartridge (QTY 1) Fuel Filter
SKU: FF5768J
Out of stock

AF55728 - Air (QTY 1) Filter
SKU: AF55728
1 in stock

AF4736 - Primary (QTY 1) Air Filter
SKU: AF4736
5 in stock

AF26357 - Cab Air (QTY 1) Filter
SKU: AF26357
12 in stock

AF26201 - Secondary Magnum RS (QTY 1) Air Filter
SKU: AF26201
1 in stock

AF26200 - Magnum RS (QTY 1) Air Filter
SKU: AF26200
2 in stock

AF1659 - Air (QTY 1) Filter
SKU: AF1659
1 in stock

TA20416 - RH ILS Suspension Cylinder
SKU: TA20416
39 in stock

TA20415 - LH ILS Suspension Cylinder
SKU: TA20415
63 in stock

RE62205 - Front Axle Rear Pivot Support
SKU: RE62205
16 in stock

RE62204 - Axle Support. Front Support W/ Bushing
SKU: RE62204
28 in stock
