What is the service life of tensioner pulleys and idler pulleys?

[VonDeclan]

Tensioner pulleys and idler pulleys can last for different durations depending on the vehicle's usage and environmental conditions. The recommended inspection and replacement interval is every 3 years or 60,000 kilometers. Here are the specific details about the usage of tensioner pulleys and idler pulleys: Usage: Tensioner pulleys and idler pulleys have relatively long maintenance and replacement cycles, falling under the category of mid-term maintenance. Generally, it is more scientific to replace them as a set with components in the accessory system or timing system. They are typically replaced together with the timing belt or accessory belt, ensuring better coordination when new. High-quality tensioner pulleys can last up to 80,000 kilometers, while lower-quality ones may have a shorter lifespan and pose safety risks.