This is enough room to make getting a filter wrench in there alot easier, but not enough that it makes it tough to get the filter out of the engine bay. The aluminum spacer comes with two bolts that are longer to support use of the spacer. Installation is simple for even the weakest mechanic. Take out the two bolts that hold the filter head to the support bracket and install spacer and longer bolts. No fuel lines or wires need to be moved or extended. Simply remove the bolts from the filter head slip the spacer in and retighten with the new bolts provided.