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Dayco No Slack Automatic Belt Tensioners

4.33 out of 5 stars 33 Customer Reviews

Dayco No Slack automatic belt tensioners can resolve belt squeal, improper tracking, or an accessory that has stopped working completely. Featuring "flat spring" technology, these tensioners allow for an increase in torque to be transmitted to the belt when needed, compensating for stretch and wear, while maintaining constant tension throughout the life of your belt. They are built with tough, long-lasting cast aluminum housings and arms, steel locator pins, and arm plates. Engineered to outperform and outlast OEM parts, take up the slack with Dayco No Slack automatic belt tensioners.

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Results 1 - 15 of 15

Dayco No Slack Automatic Belt Tensioners 89935

Accessory Drive Belt Tensioner Assembly

Part Number: DAC-89935

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89438

Dayco No Slack Automatic Belt Tensioners 89438

Drive Belt Tensioner Assembly, Mack, Sterling, Each

Part Number: DAC-89438

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89471

Drive Belt Tensioner Assembly

Part Number: DAC-89471

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Dayco No Slack Automatic Belt Tensioners 89477

Drive Belt Tensioner Assembly

Part Number: DAC-89477

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

Dayco No Slack Automatic Belt Tensioners 89450

Drive Belt Tensioner Assembly

Part Number: DAC-89450

Not Yet Reviewed

Estimated Ship Date: Mar 4, 2026 if ordered today

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Estimated Ship Date: Mar 4, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89448

Drive Belt Tensioner Assembly, Kenworth, International, Peterbilt, Volvo, Western Star, Each

Part Number: DAC-89448

Not Yet Reviewed

Estimated Ship Date: Mar 5, 2026 if ordered today

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Estimated Ship Date: Mar 5, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89473

Drive Belt Tensioner Assembly, Peterbilt, Sterling, Volvo, Western Star, Each

Part Number: DAC-89473

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89475

Drive Belt Tensioner Assembly

Part Number: DAC-89475

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89422

Drive Belt Tensioner Assembly

Part Number: DAC-89422

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Need It Sooner? We recommend these similar substitute parts:

Dayco No Slack Idler Pulleys 89105

Not Yet Reviewed

Estimated Ship Date: Today

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Dayco No Slack Automatic Belt Tensioners 89449

Drive Belt Tensioner Assembly, Mack, Each

Part Number: DAC-89449

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89458

Drive Belt Tensioner Assembly

Part Number: DAC-89458

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners for 2008-2017 GU8, GU7, 1997-2002 GENESIS RE - 89499

AUTOMATIC BELT TENSIONER, HD, DAYCO

Part Number: DAC-89499

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89447

Drive Belt Tensioner, No Slack Automatic, Serpentine Style, Each

Part Number: DAC-89447

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners 89421

Drive Belt Tensioner Assembly

Part Number: DAC-89421

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

Dayco No Slack Automatic Belt Tensioners for 2005-2007 LE, 2003-2005 MR - 89464

Drive Belt Tensioner Assembly

Part Number: DAC-89464

Not Yet Reviewed

Estimated Ship Date: Mar 10, 2026 if ordered today

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Estimated Ship Date: Mar 10, 2026 if ordered today

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