Diesel King T-shirt design. Do you believe Diesel is King? Are you looking for a diesel mechanic shirt? Or do you consider yourself to be King of the Diesel? This shirt is made for you. Diesel King Shirt with distressed lettering. Made for the trucker, diesel engine lover, auto mechanic, or general car lover. Tee fitted. Order a size up for looser fit. Lightweight, Classic fit, Double-needle sleeve and bottom hem