Dayco 89228 | Accessory Drive Belt Tensioner Assembly

Part Number
Accessory Drive Belt Tensioner Assembly

Fits: 87-89 Chevrolet Astro, 87-91 Chevrolet G10, 87-91 Chevrolet G20, 87-91 Chevrolet G30, 87-91 GMC G1500, 87-91 GMC G2500, 87-91 GMC G3500, 87-89 GMC Safari, 88-89 Chevrolet C1500, 88-89 Chevrolet C2500, 88-89 Chevrolet C3500, 88-89 Chevrolet K1500, 88-89 Chevrolet K2500, 88-89 Chevrolet K3500, 88-89 GMC C1500, 88-89 GMC C2500, 88-89 GMC C3500, 88-89 GMC K1500, 88-89 GMC K2500, 88-89 GMC K3500

Special Price $45.04 Regular Price $52.99
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Estimated Ship Date: 1 Business Day or Less
Dayco® No Slack® Automatic Belt Tensioners are built to outperform and outlast competitive OE parts. This specific Dayco® Automatic Belt Tensioner is manufactured with a specially coated patented flat wire spring to allow the internal tension to be concentric, thus providing a more even degree of constant tension. The heavy duty cast aluminum spring case resists cracking and fatigue. Each component is built to resist rust, endure the toughest of conditions while promoting quieter performance and longer life. This tensioner contains a metallic locator pin built to withstand extreme drive demands and properly locate the tensioner for installation.

BRAND: Dayco




Belt TypeSerpentine
DirectionClock Wise
Number of Pulleys1
Pulley 1 Diameter90
Pulley 1 FlatN
Pulley 1 Number of Grooves4
Pulley 1 Width23.5

w/o A.C.



  • Goodyear: 49251
  • Duralast: 305228
  • Gates: 38135
  • ACDelco: 38135
  • NAPA: 38135
  • General Motors: 14102107
  • Hayden: 5865
  • Four Seasons: 45865
  • General Motors: 14102105
  • Freshstart: 49251
  • CARQUEST: 38135


  • 1987-1991 GMC G1500
  • 1988-1989 Chevrolet K3500
  • 1987-1989 Chevrolet Astro
  • 1988-1989 GMC C1500
  • 1988-1989 Chevrolet C2500
  • 1988-1989 Chevrolet K1500
  • 1987-1991 GMC G2500
  • 1988-1989 Chevrolet C1500
  • 1988-1989 GMC K2500
  • 1987-1991 Chevrolet G30
  • 1987-1989 GMC Safari
  • 1988-1989 GMC C3500
  • 1988-1989 GMC K3500
  • 1987-1991 GMC G3500
  • 1988-1989 Chevrolet C3500
  • 1988-1989 Chevrolet K2500
  • 1988-1989 GMC K1500
  • 1987-1991 Chevrolet G10
  • 1987-1991 Chevrolet G20
  • 1988-1989 GMC C2500
Customer Questions
Can a serpentine belt cause smoke?
Yes, a serpentine belt can cause smoke. A serpentine belt is an essential component of a vehicle's engine system. It drives various accessories such as the alternator, power steering pump, water pump, and air conditioning compressor. If the serpentine belt becomes worn, damaged, or misaligned, it can cause friction and generate smoke.
Why is my serpentine belt squealing?
The serpentine belt can squeal due to various reasons, including tension issues, worn-out belt, or a problem with the belt's pulleys.
Is my serpentine belt too tight?
If your serpentine belt is causing issues like excessive noise or accelerated wear on the pulleys, it may indicate that the belt is too tight.
Why did my serpentine belt come off?
Serpentine belts can come off due to factors such as belt wear, improper tension, misaligned pulleys, or a faulty tensioner.
Please, mind that only logged in users can submit questions

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