The Fuji Racing Clear Timing Covers not only look at the part, but they also help for visual inspection of the timing belt components. Whether you have a fully built engine with a colored uprated timing belt & Vernier pulleys or just a standard built engine these will look the part no matter what. Manufactured from Clear Polycarbonate material to offer clear viewing of the timing belt components. They also offer an OEM fit & finish. Supplied with top & bottom center seals and a set of stainless steel bolt inserts for all the bolt holes. (please note if the inserts are used in the center cover you will not be able to use the standard shouldered bolts) The center cover can be used with or without the sleeves.