Buy OEM Lexus Part # 135620P030 (13562-0P030, 1356231040). Engine Timing Chain Guide. Timing Chain - Repair or Replace Your engine's timing chain can stretch over time resulting in a check engine

Timing Chain - Repair or Replace
Your engine's timing chain can stretch over time resulting in a check engine light that comes along with excessive noise from your engine's timing cover. If the chain has broken, which is a rare occurrence, the engine will not start. If your Lexus has high mileage along with any of these other symptoms, contact our service department for expert diagnosis.