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).

L158185 - Top Link/Lower Lift Link Pin
SKU: L158185
76 in stock

L156666 - Lower Lift Link Pin Strap
SKU: L156666
70 in stock

L114953 - Drawbar
SKU: L114953
74 in stock

L100868 - Upper RH (Cat. II) Sway Block
SKU: L100868
43 in stock

L100867 - Upper LH (Cat. II) Sway Block
SKU: L100867
36 in stock

L100866 - (RH) Sway Block; Cat. II
SKU: L100866
30 in stock

L100865 - (LH) Sway Block; Cat. II
SKU: L100865
28 in stock

AL207999 - Rockshaft Lift Cylinder (75MM Piston) Seal Kit
SKU: AL207999
125 in stock

AL201043 - Stabilizer Pin
SKU: AL201043
153 in stock

AL200985 - Cat. II Top Link Assembly
SKU: AL200985
3 in stock

AL180110 - Drawbar Pin
SKU: AL180110
25 in stock

AL176767 - Rockshaft Position Sensor
SKU: AL176767
56 in stock

AL176473 - Cat. II Top Link Assembly
SKU: AL176473
10 in stock

AL176471 - Cat. III Top Link Assembly
SKU: AL176471
39 in stock

AL176469 - CATIII Top Link Assembly
SKU: AL176469
5 in stock

AL161388 - Rockshaft Control Valve Spacer
SKU: AL161388
29 in stock

AL159972 - Cat. II Top Link; Tractor End
SKU: AL159972
16 in stock

AL159971 - Cat. II Top Link; Tractor End
SKU: AL159971
8 in stock

AL159969 - Cat. III Top Link; Tractor End
SKU: AL159969
7 in stock

AL159964 - Cat. III Top Link; Implement End
SKU: AL159964
17 in stock

AL159963 - Cat. III Top Link; Implement End
SKU: AL159963
8 in stock

AL159873 - Center Link Complete
SKU: AL159873
50 in stock

AL117727 - CAT 3 Quick Attach Hook Kit
SKU: AL117727
11 in stock

VPM8079 - Carbon Cab Air Filter
SKU: VPM8079
170 in stock
