When installing cams and/or camgears, its a good idea to replace your timing belt at the same time as your current timing belt will need to be removed anyways to install the parts. Timing belts do not last forever and old factory belts can become dry rotted or weakened. This could lead them to fail under load and completely ruin an engine. We reccomend Gates Racing Kevlar Timing Belts for their excellent quality and reasonable price. It just makes sense.