If you have to peel away the face of your engine to replace your timing belt, it's a good idea to replace a few other parts while you're in there, like your timing belt tensioner bolt. Besides, it won't cost you an arm and a leg to get your hands on a new timing belt tensioner bolt to go along with your new timing belt, and it just makes sense to spruce things up while you can. For the best deals on the net for timing belt tensioner bolts, cruise on over to AutoAnything. The shipping is free.