Parts for John Deere 990 Tractor
- 9' Trans. Disc - Reman, Woven w/ 1-3/8' 19 Spline Hub - Spring or Solid Center R18382
- 9' Transmission Disc - New, Woven w/ 15/16' 13 Spline Hub R13090
Ignition & Electrical Parts
Lights & Related Parts
Starters & Related Parts
More about the John Deere 990
Be sure to look for any serial number comments in the part fit notes. In some cases, the John Deere 990 Tractor parts you need depend on your serial number. You can find the serial number on the rear of tractor below PTO. Serial numbers include 190001 from 2000 models, 290002 from 2001, 291001 from 2002, 391001 from 2003, 590001 from 2004, 690001 from 2005, 790001 from 2006, 890001 from 2007. Some John Deere 990 Tractors have a 4x2 2WD chassis, but there are also some with a 4x4 MFWD 4WD (optional) chassis, all equipped with power steering. They also have wet disc brakes. The type I 3-point hitch is very reliable. It is also worth noting that the live (two-stage clutch) rear PTO runs at 540 rpms. The John Deere 990 has an open center hydraulics system with a 5.5 gal [20.8 L] capacity. The pump does the job pushing 8.5 gpm [32.2 lpm] fluids in the hydraulics system.