The idler pulley can help improve drivetrain stability. If a car does not have a good tensioner, idler pulley and belt kit, then no matter how powerful the engine or the fast tires it is, it will be useless.
This Serpentine Belt Tensioner Idler Pulley Drive Kit would be best suited for individuals owning Toyota Sequoia with 4.6L or 5.7L V8 engine.
