This replacement rear control arm mount connects the rear upper control arm to the vehicle chassis. Ideal for rusted original mounts or upgrading to a 12-bolt 4-link setup in 3-link vehicles. Made from 0.188" thick CNC-machined steel, it features a powder-coated finish in bright red or gloss black. Includes Grade 8 hardware. Check if your vehicle has one or two upper control arms: six-cylinder and most small block vehicles typically have a 3-link suspension, while big block vehicles use a 4-link setup. Sold individually.