John Deere 7820 Tractor Parts
7820 parts and accessories
The John Deere 7820, manufactured from 2003 to 2007, became a favorite among farmers for its reliability and versatility. Powered by a robust John Deere PowerTech 6.8L diesel engine producing approximately 145 engine horsepower and 125 PTO horsepower, the 7820 offered excellent performance in a variety of agricultural applications. Its comfortable cab and advanced features made it a sought-after tractor for both row crop and livestock operations.
The John Deere 7820 was introduced in 2003 as part of the 7020 series, replacing the earlier 7810. Production continued until 2007. This tractor features a John Deere PowerTech 6.8L six-cylinder diesel engine, producing around 145 horsepower and 125 PTO horsepower. Engine displacement is 414 cubic inches. The 7820 offered several transmission options, including the popular AutoQuad II and PowrQuad Plus transmissions, providing a range of gear selections to optimize performance. Its PTO offered both 540 and 1000 RPM options, accommodating a wide range of implements. Hydraulic capacity is approximately 29.1 GPM with up to four rear remotes. It boasts a Category II/III 3-point hitch with a lift capacity of around 9,400 lbs. The 7820 was commonly used for row crop work, hay baling, livestock feeding, and various tillage operations. What sets it apart from other models in the lineup is its balance of power, features, and reliability, making it a versatile machine capable of handling diverse farming tasks. It slotted in the John Deere range above the 7720 and below the larger frame 7920.
Specifications
| Engine | John Deere PowerTech 145 HP 6.8L Diesel |
|---|---|
| PTO HP | 125 HP @ 540/1000 RPM |
| Transmission | AutoQuad II/PowrQuad Plus/IVT |
| Hydraulics | 29.1 GPM, Up to 4 remotes |
| 3-Point Hitch | Category II/III, 9400 lbs |
| Fuel Capacity | 58 gallons |
| Weight | 14,500 lbs |
| Years Produced | 2003-2007 |
Maintenance Tips
- Engine Oil & Filter: Change the engine oil and filter every 250-300 hours using high-quality oil meeting John Deere specifications. This ensures optimal engine lubrication and longevity.
- Hydraulic System: Inspect hydraulic fluid levels regularly and change the hydraulic filters every 500 hours. Use genuine John Deere hydraulic fluid to maintain system performance and prevent contamination.
- Fuel System: Use clean, high-quality diesel fuel and change the fuel filter every 500 hours. Consider using a fuel additive during colder months to prevent gelling and ensure proper fuel flow.
- Seasonal Storage: Before storing the tractor for an extended period, fill the fuel tank to prevent condensation. Disconnect the battery and store it in a cool, dry place. Consider adding a fuel stabilizer to the fuel tank.
History & Background
The John Deere 7820 was introduced in 2003 as part of the new 7020 series of tractors, building on the success of the previous 7010 models. It represented a step forward in technology and comfort, with improvements to the cab and engine performance. The 7820 quickly became a popular choice for farmers needing a reliable and versatile tractor in the mid-horsepower range.
Frequently Asked Questions
What engine is in the John Deere 7820?
The John Deere 7820 is equipped with a John Deere PowerTech 6.8L six-cylinder diesel engine. It produces approximately 145 engine horsepower.
What is the PTO horsepower on a 7820?
The PTO horsepower on the John Deere 7820 is approximately 125 HP. It offers both 540 and 1000 RPM PTO speeds.
What oil filter fits the 7820?
The recommended oil filter for the John Deere 7820 is a John Deere filter part number RE504836 or aftermarket equivalents such as Baldwin BD7153 or Wix 51791.
What are common parts needed for the 7820?
Common wear parts for the John Deere 7820 include engine oil filters, fuel filters, hydraulic filters, air filters, belts, hydraulic seals, steering components, and clutch parts. Regular replacement of these parts ensures optimal performance and prevents costly repairs.

R122909 - PTO (540/1000 RPM) Shaft
SKU: R122909
Out of stock

L156976 - PTO (540/1000 RPM) Shaft
SKU: L156976
48 in stock

TY6764 - Compressor New
SKU: TY6764
330 in stock

RE69715 - A/C Compressor W/ Seal Manifold Assy.
SKU: RE69715
15 in stock

RE57575 - Expansion Valve
SKU: RE57575
30 in stock

RE52508 - 8 Groove (12V) New Clutch
SKU: RE52508
82 in stock

RE52454 - Denso Style w/o Clutch New Compressor
SKU: RE52454
196 in stock

RE43497 - Blower Switch
SKU: RE43497
522 in stock

RE300527 - Fan/Motor Assembly
SKU: RE300527
41 in stock

RE300524 - ATC Fan/Motor Assembly Fan
SKU: RE300524
Out of stock

RE237675 - Blower Motor
SKU: RE237675
109 in stock

RE217662 - Blower Motor Resistor
SKU: RE217662
28 in stock

RE214440 - Receiver/Drier
SKU: RE214440
26 in stock

RE190340 - Sensor/ Transducer
SKU: RE190340
32 in stock

RE174764 - Control Valve
SKU: RE174764
161 in stock

RE157329 - Dual Press. Switch
SKU: RE157329
263 in stock

R33259 - O-Ring (10 pk)
SKU: R33259
312 in stock

R227261 - O-Ring
SKU: R227261
21 in stock

R227258 - ORFS HNBR O-Ring
SKU: R227258
9 in stock

R183412 - O-Ring
SKU: R183412
43 in stock

R183410 - O-Ring Packing
SKU: R183410
171 in stock

R183409 - O-ring
SKU: R183409
262 in stock

R133899 - Blower Motor Duct Gasket
SKU: R133899
835 in stock

R115742 - Seal
SKU: R115742
43 in stock
