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).

RE214439 - Receiver/Drier
SKU: RE214439
928 in stock

RE190340 - Sensor/ Transducer
SKU: RE190340
32 in stock

RE174764 - Control Valve
SKU: RE174764
161 in stock

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

R113050 - O-Ring
SKU: R113050
143 in stock

R10093 - O-Ring
SKU: R10093
344 in stock

L79884 - Blower Motor Gasket
SKU: L79884
82 in stock

L79311 - Manifold Gasket
SKU: L79311
43 in stock

L114670 - O-Ring
SKU: L114670
16 in stock

AR59780 - Receiver Drier
SKU: AR59780
928 in stock

AR45867 - Receiver Drier
SKU: AR45867
35 in stock

AL78494 - 5" pulley) Clutch - Nippondenso (8 groove
SKU: AL78494
14 in stock

AL39043 - Blower Motor Ass.
SKU: AL39043
642 in stock

AL224589 - Blower Motor Resistor
SKU: AL224589
40 in stock

AL220729 - Receiver Dryer
SKU: AL220729
166 in stock

AL220728 - Receiver Dryer
SKU: AL220728
143 in stock

AL219020 - Expansion Valve
SKU: AL219020
27 in stock

AL207876 - Condenser. Vapor
SKU: AL207876
43 in stock

AL168231 - Switch Dual Press.
SKU: AL168231
143 in stock

AL163559 - Receiver/Drier
SKU: AL163559
17 in stock

AL162467 - Receiver/Drier
SKU: AL162467
141 in stock

AL157615 - Condenser
SKU: AL157615
93 in stock

AL154203 - Denso Style w/ Clutch New Compressor
SKU: AL154203
150 in stock

AL110881 - Blower Motor Assy
SKU: AL110881
642 in stock
