2015+ Ford F-150 transmission spacer improves driveline angle in lowered trucks. Use to reduce or eliminate lowering induced vibration. 1/4" thick spacer raises the transmission which corrects driveline angle after lowering and ensures a smooth driving experience. Finished in black zinc finished to prevent rust. 100% Made in USA.v Adjusts driveline angle in lowered trucks Unique design rotates into position Direct bolt-in Black zinc finish 100% Made in USA