One important characteristic of a timing belt is that__________.

• A. It will not slip during operation
• B. It stretches under load
• C. It requires lubrication
• D. It is made entirely of metal teeth

Answer: (A)

Timing belts are designed to keep two rotating parts in perfect sync by their toothed surface meshing with the pulleys. When the belt is properly tensioned and in good condition, those teeth grip the pulleys so the crankshaft and camshafts turn together without slipping. If slipping occurred, valve timing would be lost, leading to poor performance or engine damage, so the key characteristic is that the belt will not slip during operation. The other statements don’t match how timing belts work: they aren’t meant to stretch significantly under load, many operate without lubrication, and they aren’t made entirely of metal teeth but are typically rubber or polyurethane with reinforcing materials.