Dayco 89498 | Accessory Drive Belt Tensioner Assembly

Part Number
Accessory Drive Belt Tensioner Assembly

Fits: Freightliner 114SD, Freightliner 122SD, Freightliner Cascadia, Freightliner Century Class, Freightliner Columbia, Freightliner Coronado, Freightliner M2 112, Freightliner Sport Chassis, Freightliner XC Modular Rail, Freightliner XC Raised Rail, Kimble Chassis KF3200C, Pierce Mfg. Inc. Arrow XT, Pierce Mfg. Inc. Custom, Pierce Mfg. Inc. Dash CF, Pierce Mfg. Inc. Quantum, Pierce Mfg. Inc. Velocity, Sterling Truck A9500, Sterling Truck L9500, Van Hool Commuter Coach CX, Van Hool TDX Double Decker Coach, Van Hool Tourist Coach TX, Western Star 4700SB, Western Star 4700SF, Western Star 4800SB, Western Star 4800SF, Western Star 4900EX, Western Star 4900FA, Western Star 4900SA, Western Star 5700XE, Western Star 6900XD

Special Price $155.69 Regular Price $172.99
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As the major supplier to heavy duty original equipment manufacturers, this Dayco® No Slack® Heavy Duty Tensioner is guaranteed to be engineered and manufactured to the strictest design specifications. The heavy-duty cast aluminum body and pulley arms translate into extra strength and durability. This Dayco® Heavy Duty® Tensioner features a patented “flat spring” design that's engineered to handle the higher torque and power pulses exerted by today's diesel engines. Rugged pulleys with double lifetime lubricated bearings deliver long lasting, dependable service. In addition, this Dayco® Heavy Duty Tensioner features an “extremely damped” design using a wave spring and a metal ring with a bonded rubber surface to act as a “radial shock absorber” for the tensioner arm.

BRAND: Dayco




w/o Optional Horton Fan Clutch



  • 2012-2016 Freightliner 114SD
  • 2011-2011 Freightliner Sport Chassis
  • 2013-2014 Pierce Mfg. Inc. Quantum
  • 2008-2010 Sterling Truck A9500
  • 2013-2014 Pierce Mfg. Inc. Velocity
  • 2015-2015 Van Hool TDX Double Decker Coach
  • 2012-2012 Pierce Mfg. Inc. Custom
  • 2015-2016 Kimble Chassis KF3200C
  • 2010-2016 Freightliner Coronado
  • 2009-2016 Western Star 4900EX
  • 2011-2011 Pierce Mfg. Inc. Velocity
  • 2013-2016 Western Star 4700SB
  • 2013-2014 Pierce Mfg. Inc. Dash CF
  • 2016-2016 Western Star 5700XE
  • 2013-2016 Western Star 4700SF
  • 2011-2011 Pierce Mfg. Inc. Quantum
  • 2013-2016 Freightliner 122SD
  • 2008-2010 Sterling Truck L9500
  • 2014-2015 Freightliner XC Raised Rail
  • 2011-2016 Freightliner M2 112
  • 2008-2011 Freightliner Columbia
  • 2011-2011 Western Star 6900XD
  • 2008-2016 Freightliner Cascadia
  • 2013-2016 Western Star 4800SF
  • 2012-2016 Western Star 4800SB
  • 2013-2016 Freightliner Sport Chassis
  • 2016-2016 Van Hool Commuter Coach CX
  • 2009-2016 Western Star 4900SA
  • 2014-2015 Freightliner XC Modular Rail
  • 2011-2011 Pierce Mfg. Inc. Arrow XT
  • 2013-2014 Pierce Mfg. Inc. Arrow XT
  • 2016-2016 Van Hool Tourist Coach TX
  • 2009-2019 Western Star 4900FA
  • 2008-2010 Freightliner Century Class
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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