John Deere 6120 Tractor Parts
6120 parts and accessories
The John Deere 6120 tractor, manufactured from 2003 to 2007, proved to be a reliable workhorse on farms. Powered by a 4.5L PowerTech diesel engine delivering around 80 horsepower, and boasting a PTO horsepower of approximately 66, this model became popular for its versatility in various agricultural tasks. Farmers appreciated its balance of power, efficiency, and user-friendly design.
The John Deere 6120 was introduced in 2003 as part of the John Deere 6000 series, replacing earlier models and offering updated features and performance. Production continued through 2007. This tractor features a 4.5L John Deere PowerTech 4045T diesel engine, producing approximately 80 horsepower. The engine's displacement is 276 cubic inches (4.5 liters). Transmission options included a SyncroPlus transmission with 12 forward and 4 reverse speeds, or a PowrQuad Plus transmission offering 16 forward and 16 reverse speeds with power shift capabilities. The PTO horsepower is around 66 hp, with a standard 540 RPM PTO, and an optional 540/1000 RPM PTO. Hydraulic capacity is approximately 15.9 GPM (60.2 L/min) with typically two rear remotes. It features a Category II 3-point hitch with a lift capacity of around 5,357 lbs. The John Deere 6120 was commonly used for various farming applications, including row crop work, hay production, livestock operations, and light tillage. What distinguishes it from other models in the lineup is its compact size, balanced power, and fuel efficiency, making it a versatile choice for smaller to medium-sized farms.
Specifications
| Engine | John Deere 4045T 80 HP Diesel |
|---|---|
| PTO HP | 66 HP @ 540/1000 RPM |
| Transmission | SyncroPlus 12x4 or PowrQuad Plus 16x16 |
| Hydraulics | 15.9 GPM, 2 remotes |
| 3-Point Hitch | Category II, 5357 lbs |
| Fuel Capacity | 34.3 gallons |
| Weight | 8,600 lbs |
| Years Produced | 2003-2007 |
Maintenance Tips
- Engine Oil & Filter: Change the engine oil and filter every 250 hours of operation. Use John Deere Plus-50 II oil or equivalent and a genuine John Deere oil filter for optimal engine protection.
- Hydraulic System: Inspect hydraulic fluid levels regularly and change the hydraulic filters every 500 hours. Use only John Deere Hy-Gard fluid to prevent damage to hydraulic components. Check for leaks around hydraulic cylinders and hoses.
- Fuel System: Use clean, high-quality diesel fuel and replace the fuel filter every 500 hours to prevent fuel system issues. Drain water from the fuel/water separator regularly, especially in humid conditions. Consider using a fuel additive during cold weather.
History & Background
The John Deere 6120 was launched in 2003 as a part of the updated 6000 series, designed to provide a modern and efficient tractor for a range of agricultural tasks. There were no major redesigns during its production run, but it represented an advancement in terms of operator comfort and fuel efficiency compared to its predecessors. It solidified John Deere's reputation for producing reliable and versatile tractors.
Frequently Asked Questions
What engine is in the John Deere 6120?
The John Deere 6120 is equipped with a 4.5L John Deere PowerTech 4045T diesel engine, producing approximately 80 horsepower.
What is the PTO horsepower on a 6120?
The PTO horsepower rating on the John Deere 6120 is approximately 66 HP. It offered a standard 540 RPM PTO and an optional 540/1000 RPM PTO.
What oil filter fits the 6120?
The recommended oil filter for the John Deere 6120 is a John Deere filter part number RE504836 or an equivalent cross-reference like a Wix 51348 or a Baldwin B7170.
What are common parts needed for the 6120?
Commonly needed parts for the John Deere 6120 include engine oil filters, fuel filters, air filters, hydraulic filters, fan belts, hydraulic cylinder seal kits, steering cylinder seals, and clutch components (if applicable for mechanical transmissions).

AL203060 - Oil Filter
SKU: AL203060
29 in stock

AL177185 - Cab Filter
SKU: AL177185
341 in stock

AL172780 - Primary Air Filter
SKU: AL172780
Out of stock

AL158986 - Activated Carbon Cab Air Filter Kit
SKU: AL158986
Out of stock

AL153517 - Fuel Filter
SKU: AL153517
457 in stock

AL118036 - Hydraulic Filter
SKU: AL118036
348 in stock

AF55829 - Air Recirculation (QTY 1) Filter
SKU: AF55829
Out of stock

AF26672 - Air (QTY 1) Filter
SKU: AF26672
2 in stock

AF26157 - Primary (QTY 1) Air Filter
SKU: AF26157
2 in stock

AF26155 - Secondary (QTY 1) Air Filter
SKU: AF26155
54 in stock

T188397 - MFWD Front Axle Kingpin
SKU: T188397
160 in stock

RE152042 - Gas Shock; Tilt Wheel Kit
SKU: RE152042
301 in stock

R50992 - Hub; Pound In Cap
SKU: R50992
579 in stock

R49841 - 8 Bolt Hub
SKU: R49841
66 in stock

R49839 - 6 Bolt Hub
SKU: R49839
34 in stock

R49838 - Thrust (Spindle) Washer
SKU: R49838
202 in stock

R49835 - Upper/ Lower Bushing
SKU: R49835
130 in stock

R115119 - MFWD Drive Shaft Bearing
SKU: R115119
58 in stock

L57016 - Steering Arm (RH)
SKU: L57016
42 in stock

L57015 - Steering Arm (LH)
SKU: L57015
49 in stock

L41159 - Differential Angle Ring
SKU: L41159
90 in stock

L36442 - Steering Arm (LH) W/ Dual Steering Cylinders
SKU: L36442
23 in stock

L36085 - Steering Cylinder Pin
SKU: L36085
57 in stock

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