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

Showing In Stock Items. Show All 43 Items.

Results 1 - 25 of 36

Dorman Automatic Belt Tensioners 419-201

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

Part Number: RNB-419-201

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Dorman Automatic Belt Tensioners for 1998-2002 CAMARO, FIREBIRD - 419-336

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

Part Number: RNB-419-336

Not Yet Reviewed

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Dorman Automatic Belt Tensioners 419-109

Automatic Belt Tensioner, Smooth Pulley, Buick, Cadillac, Chevy, GMC, Hummer, Saab, Each

Part Number: RNB-419-109

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Dorman Automatic Belt Tensioners 419-301

Automatic Belt Tensioner, 7-Rib Pulley, Dodge, Jeep, Each

Part Number: RNB-419-301

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Dorman Automatic Belt Tensioners 419-112

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: Today

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Dorman Automatic Belt Tensioners 419-011

Automatic Belt Tensioner, Ford, Lincoln, Mercury, Each

Part Number: RNB-419-011

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-126

Automatic Belt Tensioner

Part Number: RNB-419-126

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-214

Automatic Belt Tensioner (Tensioner Only)

Part Number: RNB-419-214

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-317

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

Part Number: RNB-419-317

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-008

Automatic Belt Tensioner, Chrysler, Dodge, Jeep, 4.7L, Each

Part Number: RNB-419-008

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-200

Automatic Belt Tensioner, Serpentine, 6-rib, Ford, Mazda, Mercury, 4.0L, Each

Part Number: RNB-419-200

Not Yet Reviewed

Estimated Ship Date: Today

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Dorman Automatic Belt Tensioners for 2000-2005 CELICA, 2003-2006 COROLLA, 2003-2010 VIBE - 419-123

Automatic Belt Tensioner (Tensioner only)

Part Number: RNB-419-123

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Dorman Automatic Belt Tensioners for 1998-2002 CAVALIER, SUNFIRE - 419-111

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

Part Number: RNB-419-111

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Dayco No Slack Idler Pulleys 89017

5 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Dorman Automatic Belt Tensioners 419-101

Automatic Belt Tensioner, Smooth Pulley, Buick, Cadillac, Chevy, Oldsmobile, Pontiac, Each

Part Number: RNB-419-101

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners for 1989-1997 COUGAR, THUNDERBIRD, 1994-2004 MUSTANG - 419-208

Automatic Belt Tensioner, 6-Rib Pulley, Ford, Mercury, Each

Part Number: RNB-419-208

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners for 1998-2001 B2500, 1992-2011 RANGER - 419-209

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

Part Number: RNB-419-209

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-211

Automatic Belt Tensioner, Smooth Pulley, Ford, Each

Part Number: RNB-419-211

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-386

Automatic Belt Tensioner, Smooth Pulley, Audi, Volkswagen, Each

Part Number: RNB-419-386

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners for 1998-2003 ESCORT - 419-215

Automatic Belt Tensioner (Tensioner Only)

Part Number: RNB-419-215

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners for 1997-2002 ESCORT, 1997-1999 TRACER - 419-217

Automatic Belt Tensioner (Tensioner Only)

Part Number: RNB-419-217

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-300

Automatic Belt Tensioner, Smooth Pulley, Chrysler, Dodge, Plymouth, Each

Part Number: RNB-419-300

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners for 1997-2000 CORVETTE - 419-379

Automatic Belt Tensioner, Smooth Pulley, Chevy, Each

Part Number: RNB-419-379

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-302

Automatic Belt Tensioner, Smooth Pulley, Chrysler, Dodge, Plymouth, Each

Part Number: RNB-419-302

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners 419-119

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

Part Number: RNB-419-119

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

Dorman Automatic Belt Tensioners for 1998-2002 CAMARO, FIREBIRD - 419-124

Automatic Belt Tensioner (Tensioner Only)

Part Number: RNB-419-124

Not Yet Reviewed

Estimated Ship Date: Jan 29, 2026 if ordered today

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Estimated Ship Date: Jan 29, 2026 if ordered today

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