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Dorman Automatic Belt Tensioners

4.43 out of 5 stars 42 Customer Reviews

Put some tension on your belts with Dorman automatic belt tensioners. Rigorously tested for sustained performance by a team of product and quality engineers, Dorman
Put some tension on your belts with Dorman automatic belt tensioners. Rigorously tested for sustained performance by a team of product and quality engineers, Dorman's automatic belt tensioner assemblies are designed to provide proper tension to vehicle serpentine belts. They incorporate a damping design, torsion spring, and sealing system to ensure the proper functioning of many integral engine components. Replace worn-out or weak parts with Dorman automatic belt tensioners. The automatic belt tensioner should be replaced whenever the serpentine belt is replaced.

Features include:

* Quality tests include torque
Put some tension on your belts with Dorman automatic belt tensioners. Rigorously tested for sustained performance by a team of product and quality engineers, Dorman's automatic belt tensioner assemblies are designed to provide proper tension to vehicle serpentine belts. They incorporate a damping design, torsion spring, and sealing system to ensure the proper functioning of many integral engine components. Replace worn-out or weak parts with Dorman automatic belt tensioners. The automatic belt tensioner should be replaced whenever the serpentine belt is replaced.

Features include:

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

Results 1 - 6 of 6

Automatic Belt Tensioner, Smooth Pulley, Ford, Mazda, Mercury, Each

Part Number: RNB-419-201

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Automatic Belt Tensioner, Smooth Pulley, Chevy, Pontiac, Each

Part Number: RNB-419-336

Not Yet Reviewed

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Automatic Belt Tensioner, Smooth Pulley, Ford, Each

Part Number: RNB-419-203

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Automatic Belt Tensioner, 6-Rib Pulley, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Saab, Each

Part Number: RNB-419-112

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Automatic Belt Tensioner (Tensioner only)

Part Number: RNB-419-123

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

Automatic Belt Tensioner, Smooth Pulley, for use on Honda®, Each

Part Number: RNB-419-005

Not Yet Reviewed

Estimated Ship Date: Monday 12/15/2025

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Estimated Ship Date: Monday 12/15/2025

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