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About the John Deere 3120

Production of the John Deere 3120 Tractor started in 2005 and continued until 2008. Be sure to look for any serial number comments in the part fit notes. In some cases, the John Deere 3120 Tractor parts you need depend on your serial number. You can find the serial number on the right side of the 3120 tractor frame, above the front axle. Serial numbers include 110001 from 2005 models, 210001 from 2006, 310001 from 2007, 410001 from 2008. They also have wet disc brakes. The type I 3-point hitch is very reliable, capable to lift 2530 lbs [1147 kg]. It is also worth noting that the independent rear PTO runs at 540 rpms. The John Deere 3120 has an open center hydraulics system with a 6.8 gal [25.7 L] capacity. The pump does the job pushing 8.6 gpm [32.6 lpm] fluids in the hydraulics system.

Parts for John Deere 3120 Tractor

Universal View All Universal Products


Cooling System

Engine Overhaul Kits

Engine Parts

6-329 Diesel


Front Axle/Steering Parts

Fuel System

Hydraulic System

Ignition & Electrical Parts

Transmission & Rear Axle

Differential Components

Transmission Related Parts