Hey F-150 owners! If you're hearing clunks or feeling a rough ride from the rear, these leaf spring insulator bushings might be the fix. This is a complete set of FOUR brand new, genuine OEM Ford parts (part number FL3Z5586B). They're designed as a direct replacement for the insulator pads that sit between your leaf springs and the axle or helper springs. Fits the rear left and right sides on 2015-2020 Ford F150 models. Interchange numbers include FL34 5586-AA, AB, AC. These aren't some cheap aftermarket knock-offs – they're the real deal from Ford, so you know the fit and durability are spot-on. They come with a solid 2-year manufacturer warranty. Installation is pretty straightforward if you're comfortable getting under the truck. Stop the metal-on-metal noise and restore a smoother ride with these essential suspension components. Your truck (and your back) will thank you.