Honda FourTrax Foreman TRX500FE2 2019 Owner's Manual page 249

Vehicle Identification
Color Label & Code
The color label (1) is attached on the left side of the frame.
The color code is helpful when ordering replacement parts. You may
record the color and code in the Quick Reference section at the rear
of this manual.
LEFT SIDE
(1)
(1) color label
Technical Information 239