Last pair I had were OEM installed by the dealer. I had to take them back off and put a bead of silicone between the fender liner and the flap though. Without it, mud and water would run down the fender well liner, between the liner and the mud flap and then run down the backside of the flap! I don't mind a bid muddy streak on the front side of the mud flap - That's what it's there for! But always having these unsightly streaks down the back had to go!
Yard Fear the government that fears your gun!
Undercover Tonneau, Raptor Step Bars, Volant CAI, Cabin Air Filter Add, Debadged, 5000K HID Lows & Fogs, Custom "Hitch Cubby"