Front sway bar bushing

The rubber bushing that clamps the front stabilizer bar to the frame. There is one at each mounting point, and they wear as a pair, so replace both sides at once — a fresh bushing on one side and a hard, split one on the other leaves you with the same knock. Worn bushings are a common source of a clunk over speed bumps and washboard, and they are one of the cheapest ways to make the front end feel tight again, often worth doing together with the sway bar end links. Confirm the bushing matches your truck before ordering: the catalogue itself notes that fitment can vary by year and market within this platform, and a bushing sized for the wrong bar is either loose or will not clamp, so let the counter check by part number. This is suspension work; if you cannot support the truck safely, take it to a qualified mechanic. The number and the fitment come from two independent parts catalogues, cited below — good evidence for what a part number is and what it fits, and not factory literature, so read every figure on this page as the catalogue's claim rather than as a service-manual specification.