Toyota Engine Parts Toyota Engine Parts 1. Timing Belt - Coordinates valve timing with engine operation.
Some engines use a chain.
If it has a cogged belt like this one, it should be changed every 60,000 - 90,000 miles as recommended in owners manual. If it breaks, it can bend the valves and cost a lot of money. Front Crankshaft Pulley - drives accessories, such as air conditioning, alternator, power steering, etc. Valve Cover - covers top of cylinder head which houses the valve train and camshaft on many engines. Sealed to engine block with a head gasket to provide a gas and water tight seal.