The timing belt ensures that the valves allows air and fuel in and exhaust out of your engine at the right time. Belts have replaced timing chains and gears in modern engines because they're lighter, quieter and more efficient. The timing belt is behind the engine's front cover. It is not visible or easily accessible. With time and mileage the belt will eventually wear out and break. Inspection and replacement is recommended to prevent engine stalling due to breakage. Hyundai recommends replacing at 60,000 mile intervals at normal driving conditions. Drive belt and balancer belt additional. 3.5 and XG models slightly higher. Coupons not valid on previous purchases. Hyundais only. Valid only with this coupon at Russell Westbrook Hyundai of Anaheim. Not valid with any other offer or special.