the water pump... if it requires the removal of the timing belt is a good item to replace... check the guides and tensioner if applicable for groves or any other type of wear... look for any visible leaks to determine if any gaskets are leaking on the front side of the engine...
When you change your timing belt/chain, should you change anything else?
It depends on the car. Some require the replacement of tensioners and pulleys, some require only the new belt.
When you change your timing belt/chain, should you change anything else?
yes absolutely
Yes
