Does the 2007 Toyota Highlander have a timing belt or chain?

The 2007 Toyota Highlander 4Cylinder engine has a timing chain, rather than a timing belt. But the V6 has a timing belt, instead of a chain. If You have the timing belt, it typically lasts the lifetime of the vehicle so You dont have to worry about replacing it. The timing belt, on the other hand, will have to be replaced every 60,000 miles or 7-10 years. Some things You can do to keep the chain healthy are changing Your oil and the filter and the recommended intervals, as well as making sure oil levels are somewhere between the MINImum and maximum lines. To keep the belt healthy, the most important thing You can do is stay on top of maintaining the coolant system. If the water pump locks up, the gears will stop and that will result in the belt snapping.