I have a solution for you, but we do not have a bench seat cover for a UTV/ATV that is a single piece that covers both parts of the seat because a majority of the seats on these vehicles are either captains chairs or 2 piece bench seats. I recommend using something like the Canine Covers # DE1020BK which is designed for the back seats of cars/trucks, but will act as a one piece cover for your UTV/ATV and provide great protection for your bench seat.
This cover is 60" wide x 19" deep x... view full answer...
I spoke with my contact at Classic Accessories and the Quick-Fit UTV Bench Seat Cover, # CA18033, is made to fit seats that measure 41-1/4 inches long by 17 inches wide and backs measuring 44-3/4 inches long by 10-3/4 inches high. I have attached a picture that illustrates these measurements.
Since they have not been able to test these covers on a 2003 Kawasaki Mule 550 KAF 300C, we can not guarantee that they will fit. I recommend taking a measurement of your seat and seat back to see... view full answer...