20 TOOTH GEAR # R501637 WITH CAST IRON HOUSING. HAS 1 TUBE PORT & 2 THREADED PORTS INCLUDES: 2 MOUNTING O-RINGS
20 TOOTH GEAR # R129973 WITH ALUMINUM HOUSING HAS 1 TUBE PORT & 2 THREADED PORTS INCLUDES: 2 MOUNTING O-RINGS
FITS ALL 30 & 40 SERIES JOHN DEERE TRACTORS, 27 PIECE KIT, SINGLE APPLICATION
CAN USE ORIGINAL JD VERSION 804-5502. CAN USE HEAVY DUTY DRY-TECH VERSION 804-550.