Dorman Belt Tensioner 419-377

Rigorously tested for a sustained, secure performance by a team of product and quality engineers, Dorman's Automatic Belt Tensioner Assembly is designed to provide proper tension to a vehicle's serpentine belt. It incorporates a damping design, torsion spring, and sealing system to ensure the proper functioning of many integral engine components. The Automatic Belt Tensioner Assembly is recommended for replacement when replacing the serpentine belt.

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  Quality tests on this part include torque testing, spring-back testing, corrosion-resistance testing, and on-vehicle testing
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  Solid steel or aluminum construction for long-lasting durability
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  Highly resistant to heat and shock
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  Designed to fit properly every time