Most fender flare bolts are 10 millimetres (0. 39 in) and can be removed with an Allen tool. If you don’t have an Allen tool, head to a home hardware store and find one that aligns with the bolts that fasten your existing flares.
Stick with material that can withstand UV ray exposure for the most longevity. Make sure the bottom edge of each flare aligns with the bottom of the fender and the front of the flare fits flush against the bumper. If you’re purchasing flares for debris protection, make sure they extend past the edge of the fender. For aesthetic flares, you don’t have to worry about size. Select flares designed for painting if you plan to change their colors. You can also select pre-painted products.
Repeat this process for all of your flares.
Fender flares typically come with an Allen tool to attach the bolt. If you don’t have one, head to the home hardware store and purchase one that matches your bolt size.
Make sure the screwdriver matches the screw size. For example, 7⁄32 inch (0. 56 cm) screws require a 7⁄32 inch (0. 56 cm) screwdriver. If you’re unsure of screw size, check your car manufacturer’s manual.
Always use the corresponding Allen tool—for example, a 10 millimetre (1. 0 cm) tool for 10 millimetre (1. 0 cm) bolts—to remove the bolts.
Use an erasable marker to mark the hole location. If your vehicle body already has fender flare holes, skip this part and install the fender flare.
Be sure that you mark the flare with a circle to ensure you drill through the centermost point.
Always use your marks as a guide for the holes.
If your fender flares come with plastic fasteners, press them into the flare at the locations designated by the manufacturer. If your fender flare comes with a U-clip, attach it to the flare bracket to hold it in place.
Be sure to tighten the screws so they’re flush with the fender
Some plastic fasteners must be installed using a #2 Phillips screwdriver.
