John Deere 6420 Tractor Parts
6420 parts and accessories
The John Deere 6420 tractor, manufactured from 2002 to 2007, gained popularity for its versatility and reliability on the farm. Powered by a robust John Deere PowerTech 4.5L diesel engine producing around 100 horsepower, it offered ample power for various tasks. With a PTO horsepower rating suitable for a wide range of implements, the 6420 became a staple for farmers needing a dependable utility tractor.
The John Deere 6420 was introduced in 2002 as part of the John Deere 6020 series, replacing the earlier 6010 series. Production continued through 2007. It features a John Deere PowerTech 4.5L 4-cylinder turbocharged diesel engine, delivering approximately 100 horsepower. The engine displacement is 276 cubic inches (4.5 liters). Transmission options included a range of choices, most commonly the PowrQuad transmission offering 16 forward and 16 reverse speeds, providing excellent speed control for diverse applications. The independent PTO delivers around 85 PTO horsepower with options for 540 and 1000 RPM. The hydraulic system boasts a capacity of approximately 21 GPM, powering typically two to three rear remotes. The 3-point hitch is a Category II hitch, capable of lifting around 6,724 lbs. Commonly used in row crop operations, hay production, livestock management (feeding and manure handling), and light tillage, the 6420 distinguished itself with its improved cab comfort compared to previous models and its electronic engine controls for enhanced performance and fuel efficiency. It provided a good balance between power, size, and features within the John Deere tractor lineup, making it a versatile choice for many farming operations.
Specifications
| Engine | John Deere PowerTech 4.5L 100 HP Diesel |
|---|---|
| PTO HP | 85 HP @ 540/1000 RPM |
| Transmission | PowrQuad 16F/16R |
| Hydraulics | 21 GPM, 2-3 remotes |
| 3-Point Hitch | Category II, 6,724 lbs |
| Fuel Capacity | 37.4 gallons |
| Weight | 9,880 lbs |
| Years Produced | 2002-2007 |
Maintenance Tips
- Engine Oil and Filter: Change the engine oil and filter every 250 hours using the recommended John Deere engine oil and filter. Regularly check the oil level and inspect for any leaks.
- Hydraulic System Maintenance: Inspect hydraulic fluid levels regularly and change the hydraulic filter every 500 hours or annually, whichever comes first. Use only approved John Deere hydraulic fluid to prevent damage to the hydraulic components.
- Fuel System Care: Use clean, high-quality diesel fuel. Replace the fuel filter every 500 hours or annually to prevent fuel system contamination and ensure optimal engine performance.
- Seasonal Storage: Before storing the tractor for the off-season, drain the fuel tank, add a fuel stabilizer, and run the engine briefly to distribute the stabilizer. Disconnect the battery and store it in a cool, dry place.
History & Background
The John Deere 6420 was launched in 2002 as part of the 6020 series, succeeding the 6010 series. It represented an advancement in tractor technology with features like electronic engine controls and improved operator comfort. The 6420 is remembered as a versatile and reliable machine that contributed to the modernization of farming practices during the early 2000s.
Frequently Asked Questions
What engine is in the John Deere 6420?
The John Deere 6420 is equipped with a John Deere PowerTech 4.5L 4-cylinder turbocharged diesel engine producing approximately 100 horsepower.
What is the PTO horsepower on a 6420?
The John Deere 6420 delivers around 85 PTO horsepower and has PTO speed options of 540 and 1000 RPM.
What oil filter fits the 6420?
The recommended oil filter for the John Deere 6420 is typically a John Deere filter part number RE504836 or equivalent. Common cross-references include Wix 57202 and Baldwin B7349.
What are common parts needed for the 6420?
Common wear parts for the John Deere 6420 include engine oil filters, fuel filters, air filters, hydraulic filters, fan belts, hydraulic seals, steering components (tie rod ends), and clutch parts (if applicable based on the transmission type).

L34366 - Steering Arm (RH)
SKU: L34366
43 in stock

L157637 - RH Housing; MFWD Knuckle
SKU: L157637
9 in stock

L157636 - LH Housing; MFWD Knuckle
SKU: L157636
3 in stock

L156857 - MFWD DRIVESHAFT SEAL
SKU: L156857
63 in stock

L114652 - Front MFWD Axle Bushing
SKU: L114652
155 in stock

L114558 - MFWD Axle Housing Bushing
SKU: L114558
15 in stock

L113966 - MFWD Short Axle Housing Bushing
SKU: L113966
27 in stock

L112112 - Front Wheel; MFWD Bolt
SKU: L112112
190 in stock

L111817 - ZF Axle Support Assy Pin
SKU: L111817
212 in stock

L110237 - Planetary Pinion
SKU: L110237
18 in stock

L110236 - Drive Shaft
SKU: L110236
5 in stock

L110233 - MFWD Driveshaft Seal
SKU: L110233
59 in stock

L100632 - Cross & Bearing Kit 28.5mm X 70.5mm
SKU: L100632
43 in stock

L100152 - MFWD Differential (1.2MM Thick) Plate
SKU: L100152
123 in stock

L100151 - MFWD Differential (1.1MM Thick) Plate
SKU: L100151
116 in stock

L100150 - MFWD Differential (1.0MM Thick) Plate
SKU: L100150
38 in stock

JD10250 - Differential Pinion Bearing
SKU: JD10250
78 in stock
AL79950 - MFWD Seal
SKU: AL79950
37 in stock

AL79901 - King Pin Bearing
SKU: AL79901
43 in stock

AL79843 - MFWD Planetary Pinion Bearing
SKU: AL79843
215 in stock

AL65850 - Steering Cylinder Seal Kit
SKU: AL65850
86 in stock

AL57855 - Spindle w/ Fender Mounting Bracket (RH/LH)
SKU: AL57855
55 in stock

AL38381 - Spindle (RH/LH)
SKU: AL38381
12 in stock

AL227049 - MFWD Front Axle Double Jointed Shaft Seal
SKU: AL227049
301 in stock
