This listing is for an IAC adjustable idle spacer kit. This is a kit designed and made by Ford to make the idle adjustable on EFI engines. It can be used on multiple applications with Idle Air Control motors including 4.6, 5.0 (302 Windsor), 5.4, 5.8 (351 Windsor), and 7.5 (460 big block) engines. If a question about your application email me. If you have done any mods on your engine and having an idle problem this could be the cure. The spacer bolts between the IAC and the throttle body. This is a new complete kit with spacer, gaskets, bolts, and instructions. Easy to install. Shipping options and costs are available once items are placed in the shopping cart and based on your zip code.