Dayco Accessory Drive Tensioner Pulley 2012-2017 Chevrolet Sonic 1.4 Turbo

Model Number: 245135-TNPLY-1.4

Its recommended to replace your serpentine drive belt tensioner pulley every 100,000 miles. This pulley is fairly critical, because it tensions the drive belt which drives the air conditioning pump, power steering pump, alternator and water pump. If your tensioner starts to go bad, it will have a slight angle, or wobble, and it can cause the belt to not be tensioned well, and or cause the belt to fly off.

The tensioner is a mechanical spring loaded device that should last quite a while. The pulley will wear out faster.

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