Review on Top-Quality Heavy Duty Mud Flaps Guards for 2007-2013 Silverado 1500 - Front & Rear Set of 4 by Duane Mann

If you are fitting these to the front of a 2012 Chevy Silverado 1500 you will need to reuse the 4 screws that are already on the car. However, once you install those fenders, those (4) bolts will be too short. After you add the volume connected to the valves, there is no thread to hold them. My husband now has to wait for the Ace unit to open outside so he can pick up the (4) correct length screws. NOTE: Rear installation requires a jack. The instructions don't say so, nor do they tell you that you may need to remove both rear tires to complete the installation. the first few holes, but the rear tire REALLY and WILL get in your way. The back of the truck will need to be jacked up so you can move the drill 90 degrees around the tire on the other side to continue drilling the holes. If you don't have a 90 degree drill, you don't have a choice. but remove the tire as there is not enough space. We've just received them, so I can't yet give a good enough picture of the quality and durability. We live in Arizona so we'll see how they hold up in the sun and heat.