Jeep Wrangler JK Bumper Filler Panel Retainer Fasteners. Fit 2007 - 2016 Jeep Wrangler JK. Sold in pairs. IF you try to remove these chances are you will have to destroy at least one of them. It is VERY rare that they come right out as you hope they will, even on brand new Jeeps. Scroll through images for the location of these fasteners on a Jeep Wrangler JK.