John Deere 6620 Tractor Parts
6620 parts and accessories
The John Deere 6620 tractor, manufactured from 2003 to 2007, was a popular choice for farmers needing a reliable and versatile machine. Powered by a John Deere PowerTech 6.8L diesel engine producing approximately 125 horsepower, the 6620 offered ample power for a variety of tasks. Its robust design and a PTO horsepower rating of around 105 made it well-suited for haying, tillage, and livestock operations.
The John Deere 6620 was introduced in 2003 as part of the '20 Series' tractors, replacing earlier models and offering improvements in engine technology and operator comfort. Production continued until 2007. It featured a John Deere PowerTech 6.8L turbocharged diesel engine, delivering around 125 horsepower. This engine was known for its fuel efficiency and reliability. Transmission options included a standard SyncroPlus transmission with several gear options depending on the specific configuration, some offering partial power shift capabilities. The independent PTO delivered around 105 horsepower, available in both 540 and 1000 RPM options, providing versatility for different implements. The hydraulic system had a capacity of approximately 29 GPM, providing ample flow for hydraulic implements. The 3-point hitch was a Category II, offering a lift capacity of around 6,500 lbs. The 6620 found applications in various farming operations, including row crop work, hay production, and livestock management. Compared to the smaller 6000 series, it offered more power and hydraulic capacity, while remaining more compact and maneuverable than the larger 7000 series tractors, making it a well-rounded machine for many farm sizes.
Specifications
| Engine | John Deere PowerTech 6.8L 125 HP Diesel |
|---|---|
| PTO HP | 105 HP @ 540/1000 RPM |
| Transmission | SyncroPlus (Various Speed Options Available) |
| Hydraulics | 29 GPM, 2-3 remotes |
| 3-Point Hitch | Category II, 6500 lbs |
| Fuel Capacity | 47.5 gallons |
| Weight | 12,500 lbs |
| Years Produced | 2003-2007 |
Maintenance Tips
- Engine Oil & Filter: Change engine oil and filter every 250-300 hours using the recommended John Deere oil specification for optimal engine life.
- Hydraulic System: Check hydraulic fluid levels regularly and replace hydraulic filters according to the manufacturer's recommendations (usually every 500 hours) to prevent contamination and maintain hydraulic performance.
- Fuel System: Use clean, high-quality diesel fuel and regularly inspect the fuel filter. Drain any water or sediment from the fuel tank to prevent fuel system issues.
- Seasonal Storage: Before storing the tractor for the off-season, stabilize the fuel, grease all fittings, and consider covering the exhaust pipe to prevent moisture from entering the engine.
History & Background
The John Deere 6620 was launched in 2003 as part of John Deere's revamped '20 Series' tractor line. This series was designed to improve upon the previous generation with enhanced engine technology and improved operator comfort. The 6620 proved a popular model during its production run due to its versatile size and power.
Frequently Asked Questions
What engine is in the John Deere 6620?
The John Deere 6620 is equipped with a John Deere PowerTech 6.8L turbocharged diesel engine producing approximately 125 horsepower.
What is the PTO horsepower on a 6620?
The John Deere 6620 has a PTO horsepower rating of around 105 HP. It offers both 540 and 1000 RPM PTO options.
What oil filter fits the 6620?
The correct oil filter for the John Deere 6620 is typically a John Deere filter part number RE504836 or equivalent. Cross-references include Wix 51793, Baldwin B7349, and Fleetguard LF3620.
What are common parts needed for the 6620?
Common wear parts for the John Deere 6620 include engine oil filters, fuel filters, hydraulic filters, belts (alternator, water pump), hydraulic cylinder seals, steering linkage components, clutch parts (depending on transmission type), and radiator hoses.

RE183369 - Transmission Control Valve Solenoid
SKU: RE183369
62 in stock

R96805 - Clutch Plate
SKU: R96805
98 in stock

R95378 - Transmission Plate
SKU: R95378
69 in stock

R39322 - Clutch / Brake Sealing Ring
SKU: R39322
130 in stock

R341959 - Reverse Brake Housing Gasket
SKU: R341959
1149 in stock

R337522 - Clutch; Planetary Brake Plate
SKU: R337522
9 in stock

R319336 - Front Valve Housing Gasket
SKU: R319336
183 in stock

R216293 - Clutch; Planetary Brake Plate
SKU: R216293
29 in stock

R216291 - Clutch; Planetary Brake Plate
SKU: R216291
7 in stock

R209938 - Planetary Brake; B1 & B2 (PowrQuad Transmission) Plate
SKU: R209938
101 in stock

R158521 - Planetary Brake Housing (6/Pack) O-Ring
SKU: R158521
138 in stock

R124438 - Reverse Brake Housing Bushing
SKU: R124438
331 in stock

R108927 - Ring; Transmission Oil Pump; 12 MM Gear
SKU: R108927
65 in stock

R108925 - Transmisson Oil Pump Drive; 12 MM Gear
SKU: R108925
35 in stock

L28376 - Differential Bevel Gear
SKU: L28376
13 in stock

L114053 - Brake Actuating (22MM Wide) Disc
SKU: L114053
13 in stock

L111978 - Brake Piston
SKU: L111978
10 in stock

AL204621 - Magnetic Pickup Sensor
SKU: AL204621
68 in stock

AL160176 - Differential Discs Brake Disc Kit
SKU: AL160176
36 in stock

AL112982 - Brake Disc
SKU: AL112982
18 in stock

AL111498 - Brake Disc
SKU: AL111498
126 in stock

R98063 - Intake Valve (Std) Insert
SKU: R98063
90 in stock

R98062 - Intake (Std) Valve
SKU: R98062
76 in stock

R97344 - Pan Gasket
SKU: R97344
56 in stock
