Continental 49545 Accessory Drive Belt Tensioner Assembly
OE Quality 60-Day Returns
Continental
 Multi-V

Continental 49545 Accessory Drive Belt Tensioner Assembly

Brand Continental 49545
Position Fan, Water Pump and Alternator, Fan and Alternator, Alternator, Fan, Alternator and Air Conditioning, and Accessory Drive
Pulley 1 Flanged Non-flanged
Pulley Quantity 1
Pulley 1 Bore Diameter 1.180
Pulley 1 Outside Diameter 2.95
Pulley 1 Width 1.28
Pulley 1 Material Steel
Pulley Surface Type Smooth
Product line Multi-V
Fits Autocar LLC., Freightliner, International, Kenworth, Mack, Peterbilt, Pierce Mfg. Inc., Sterling Truck, Volvo, and Western Star · 186 vehicles

OE-style replacement. Built to meet or exceed OEM fit and performance requirements.

Accu-Drive technology. Helps maintain steady tension, alignment, and belt wear compensation.

Steel smooth pulley. Non-flanged design for Multi-V belt systems in heavy-duty service.

Cross-references Dayco 89447, Dayco 89462 and Gates 38569 for the same application. See all 15.

$177.51Free shipping
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Not what you need? See all Accessory Drive Belt Tensioner Assembly options

Accessory Drive Tensioner Overview

Continental Multi-V 49545 is an accessory drive belt tensioner assembly built for heavy-duty belt systems that use a smooth pulley and Multi-V belt routing. It is engineered to meet or exceed OEM fit and performance requirements, with Accu-Drive technology that helps maintain steady belt tension and alignment.

Compatible With applications such as the Kenworth T800, Peterbilt 379, and Freightliner Cascadia, this tensioner is used in fan, alternator, water pump, and accessory drive positions across a wide range of commercial trucks. The 49545 part number is also referenced in cross applications from Dayco and Gates for the same use case.

Key Features

  • Accu-Drive torsion-spring design helps dampen belt vibration and compensate for wear.
  • Maintains consistent belt tension to support stable accessory drive operation.
  • Steel pulley with a smooth surface for Multi-V belt systems.
  • Non-flanged pulley design with precise dimensions for proper belt tracking.
  • Built for OE-style fit and performance in demanding commercial-duty service.

Detailed Product Information

Continental 49545 is a belt tensioner assembly for accessory drive systems that rely on a smooth, Multi-V pulley. The steel pulley measures 2.95 inches outside diameter, 1.28 inches wide, and 1.180 inches bore diameter, giving the assembly the physical characteristics needed for proper belt engagement and alignment. The round torsion spring design helps keep tension steady as the belt wears, which can reduce slippage and help extend accessory component life.

This part is a direct-fit style replacement for many heavy-duty truck applications, including Volvo VNL, Mack Anthem, and Peterbilt 567 configurations. If you are replacing a worn tensioner on a Kenworth T680 or Freightliner 114SD, the 49545 part number should be matched to the exact fitment row and belt routing notes before installation.

What This Part Helps Address

  • Belt squeal caused by inconsistent tension
  • Premature belt wear from poor alignment
  • Accessory drive vibration that affects pulley tracking
  • Reduced belt control in high-load commercial engine bays
  • Noise and instability from a worn tensioner assembly

Installation Notes and Tips

Verify the vehicle year, make, model, and position against the fitment list before ordering. Several applications require specific belt routing notes such as smooth pulley, Multi-V, or 8-rib belt configurations, so confirm the existing setup on the truck before replacement. Inspect the belt and adjacent pulleys for wear at the same time to avoid repeat service.

Quality Assurance

Continental states that this tensioner is designed to meet or exceed OEM fit and performance. Accu-Drive technology is used to help maintain constant tension and alignment, supporting longer accessory component life in commercial-duty service.

Related reading

This part fits 186 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2025MackAnthem11.9L-6—FanSmooth Pulley; Multi-V
2024Freightliner114SD11.9L-6—Fan and AlternatorSmooth Pulley; Multi-V
2024MackAnthem11.9L-6—FanSmooth Pulley; Multi-V
2024VolvoVNL11.9L-6—FanSmooth Pulley; Multi-V
2023KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2023Peterbilt56711.9L-6—FanSmooth Pulley; Multi-V
2023VolvoVNL11.9L-6—FanSmooth Pulley; Multi-V
2022KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2022Peterbilt56711.9L-6—FanSmooth Pulley; Multi-V
2022VolvoVNL11.9L-6—FanSmooth Pulley; Multi-V
2021KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2021Peterbilt56711.9L-6—FanSmooth Pulley; Multi-V
2021VolvoVNL11.9L-6—FanSmooth Pulley; Multi-V
2020KenworthT88011.9L-6—FanSmooth Pulley; Multi-V
2020Peterbilt36711.9L-6—FanSmooth Pulley; Multi-V
2020Peterbilt52011.9L-6—FanSmooth Pulley; Multi-V
2020Peterbilt56711.9L-6—FanSmooth Pulley; Multi-V
2019Autocar LLC.Xpeditor11.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2019KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2019KenworthT80011.9L-6—Fan and AlternatorSmooth Pulley; Multi-V
2019KenworthT88011.9L-6—FanSmooth Pulley; Multi-V
2019KenworthW90011.9L-6—FanSmooth Pulley; Multi-V
2019Peterbilt36711.9L-6—FanSmooth Pulley; Multi-V
2019Peterbilt52011.9L-6—FanSmooth Pulley; Multi-V
2019Peterbilt56711.9L-6—FanSmooth Pulley; Multi-V
2018Autocar LLC.Xpeditor11.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2018FreightlinerCascadia11.9L-6—FanSmooth Pulley; Multi-V
2018KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2018KenworthT80011.9L-6—Fan and AlternatorSmooth Pulley; Multi-V
2018KenworthT88011.9L-6—FanSmooth Pulley; Multi-V
2018KenworthW90011.9L-6—FanSmooth Pulley; Multi-V
2018Peterbilt36511.9L-6—AlternatorSmooth Pulley; Multi-V
2018Peterbilt36711.9L-6—FanSmooth Pulley; Multi-V
2018Peterbilt52011.9L-6—FanSmooth Pulley; Multi-V
2018Peterbilt56711.9L-6—FanSmooth Pulley; Multi-V
2017Autocar LLC.Xpeditor11.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2017Freightliner114SD11.9L-6—FanSmooth Pulley; Multi-V
2017FreightlinerCascadia11.9L-6—FanSmooth Pulley; Multi-V
2017KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2017KenworthT80011.9L-6—FanSmooth Pulley; Multi-V
2017KenworthT88011.9L-6—FanSmooth Pulley; Multi-V
2017KenworthW90011.9L-6—FanSmooth Pulley; Multi-V
2017MackCXU11.9L-6—FanSmooth Pulley; Multi-V
2017Peterbilt32011.9L-6—AlternatorSmooth Pulley; Multi-V
2017Peterbilt36511.9L-6—AlternatorSmooth Pulley; Multi-V
2017Peterbilt36711.9L-6—FanSmooth Pulley; Multi-V
2017Peterbilt52011.9L-6—FanSmooth Pulley; Multi-V
2017Peterbilt56711.9L-6—Accessory DriveSmooth Pulley; Multi-V
2016Autocar LLC.Xpeditor11.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2016Freightliner114SD11.9L-6—FanSmooth Pulley; Multi-V
2016FreightlinerCascadia11.9L-6—FanSmooth Pulley; Multi-V
2016KenworthT66011.9L-6—FanSmooth Pulley; Multi-V
2016KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2016KenworthT80011.9L-6—Fan and AlternatorSmooth Pulley; Multi-V
2016KenworthW90011.9L-6—FanSmooth Pulley; Multi-V
2016Peterbilt32011.9L-6—AlternatorSmooth Pulley; Multi-V
2016Peterbilt36511.9L-6—AlternatorSmooth Pulley; Multi-V
2016Peterbilt36711.9L-6—FanSmooth Pulley; Multi-V
2016Peterbilt56711.9L-6—Accessory DriveSmooth Pulley; Multi-V
2015Autocar LLC.Xpeditor11.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2015FreightlinerCascadia11.9L-6—FanSmooth Pulley; Multi-V
2015KenworthT66011.9L-6—FanSmooth Pulley; Multi-V
2015KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2015KenworthT80011.9L-6—Fan and AlternatorSmooth Pulley; Multi-V
2015KenworthW90011.9L-6—FanSmooth Pulley; Multi-V
2015Peterbilt32011.9L-6—AlternatorSmooth Pulley; Multi-V
2015Peterbilt36511.9L-6—AlternatorSmooth Pulley; Multi-V
2015Peterbilt36711.9L-6—FanSmooth Pulley; Multi-V
2015Peterbilt38411.9L-6—FanSmooth Pulley; Multi-V
2015Peterbilt56711.9L-6—Accessory DriveSmooth Pulley; Multi-V
2015VolvoVNL11.9L-6—FanSmooth Pulley; Multi-V
2014Autocar LLC.Xpeditor11.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2014KenworthT66011.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2014KenworthT68011.9L-6—FanSmooth Pulley; Multi-V
2014KenworthT80011.9L-6—Fan and AlternatorSmooth Pulley; Multi-V
2014KenworthT80011.9L-6—FanSmooth Pulley; Multi-V
2014KenworthW90011.9L-6—FanSmooth Pulley; Multi-V
2014MackCXU11.9L-6—FanSmooth Pulley; Multi-V
2014Peterbilt32011.9L-6—AlternatorSmooth Pulley; Multi-V
2014Peterbilt38611.9L-6—FanSmooth Pulley; Multi-V
2014Peterbilt38811.9L-6—FanSmooth Pulley; Multi-V
2014Peterbilt56711.9L-6—FanSmooth Pulley; Multi-V
2014VolvoVNL11.9L-6—FanSmooth Pulley; Multi-V
2013FreightlinerCascadia11.9L-6—FanSmooth Pulley; Multi-V
2013FreightlinerColumbia10.8LL6—FanSmooth Pulley; Multi-V
2013KenworthT66011.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2013Peterbilt32011.9L-6—AlternatorSmooth Pulley; Multi-V
2013Peterbilt36711.9L-6—AlternatorSmooth Pulley; Multi-V
2013Peterbilt38811.9L-6—FanSmooth Pulley; Multi-V
2012FreightlinerCascadia11.9L-6—FanSmooth Pulley; Multi-V
2012FreightlinerColumbia10.8LL6—FanSmooth Pulley; Multi-V
2012KenworthC50010.8LL6—FanSmooth Pulley; Multi-V
2012KenworthT66011.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2012KenworthT80011.9L-6—FanSmooth Pulley; Multi-V
2012Peterbilt3658.9LL6—FanSmooth Pulley; Multi-V
2012Peterbilt36711.9L-6—AlternatorSmooth Pulley; Multi-V
2012Peterbilt38811.9L-6—FanSmooth Pulley; Multi-V
2011KenworthT66011.9L-6—Fan, Water Pump and AlternatorSmooth Pulley; Multi-V
2011Peterbilt32011.9L-6—AlternatorSmooth Pulley; Multi-V
2011Peterbilt36511.9L-6—AlternatorSmooth Pulley; Multi-V
2011Peterbilt36711.9L-6—AlternatorSmooth Pulley; Multi-V
2011Peterbilt38610.8LL6—Fan and AlternatorSmooth Pulley; Multi-V
2011Peterbilt38811.9L-6—FanSmooth Pulley; Multi-V
2010International8500 TranStar10.8LL6—AlternatorSmooth Pulley; Multi-V
2010Peterbilt36710.8LL6—AlternatorSmooth Pulley; Multi-V
2010Peterbilt38610.8LL6—Fan and AlternatorSmooth Pulley; Multi-V
2009International8500 TranStar10.8LL6—AlternatorSmooth Pulley; Multi-V
2009International9900i15.2LL6—AlternatorSmooth Pulley; Multi-V
2009Peterbilt32012.5L-6—FanSmooth Pulley; Multi-V
2009Peterbilt36710.8LL6—AlternatorSmooth Pulley; Multi-V
2009Peterbilt38610.8LL6—Fan and AlternatorSmooth Pulley; Multi-V
2009Pierce Mfg. Inc.Velocity12.5L-6—FanSmooth Pulley; Multi-V
2008FreightlinerCoronado14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2008International5600i15.2LL6—AlternatorSmooth Pulley; Multi-V
2008International9900i15.2LL6—AlternatorSmooth Pulley; Multi-V
2008International9900ix15.2LL6—AlternatorSmooth Pulley; Multi-V
2008Peterbilt36710.8LL6—AlternatorSmooth Pulley; Multi-V
2008Peterbilt38610.8LL6—Fan and AlternatorSmooth Pulley; Multi-V
2007FreightlinerColumbia14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2007FreightlinerCoronado14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2007International5600i15.2LL6—AlternatorSmooth Pulley; Multi-V
2007International770010.8LL6—AlternatorSmooth Pulley; Multi-V
2007International9400i SBA15.2LL6DIESELAlternator and Air ConditioningSmooth Pulley; Multi-V
2007International9900i15.2LL6—AlternatorSmooth Pulley; Multi-V
2007International9900ix15.2LL6—AlternatorSmooth Pulley; Multi-V
2007KenworthT600A14.6LL6—AlternatorSmooth Pulley; Multi-V
2007KenworthT80014.6LL6DIESELFan and AlternatorW/ Conventional Hood; Smooth Pulley; Multi-V
2007KenworthW90014.6LL6—AlternatorW/ 8-Rib Belt; Smooth Pulley; Multi-V
2007Peterbilt37914.6LL6—Fan and AlternatorW/ 8-Rib Belt; Smooth Pulley; Multi-V
2007Peterbilt38714.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2007Sterling TruckAT950014.6LL6—Fan and AlternatorSmooth Pulley; Multi-V
2007Western Star4900EX14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2007Western Star4900FA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2007Western Star4900SA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2006FreightlinerCentury Class14.6LL6DIESELFan and AlternatorSmooth Pulley; Multi-V
2006FreightlinerColumbia14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2006FreightlinerCoronado14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2006International5600i15.2LL6—AlternatorSmooth Pulley; Multi-V
2006International9400i SBA15.2LL6—AlternatorSmooth Pulley; Multi-V
2006International9900i15.2LL6—AlternatorSmooth Pulley; Multi-V
2006International9900ix15.2LL6—AlternatorSmooth Pulley; Multi-V
2006KenworthT80014.6LL6DIESELFan and AlternatorSmooth Pulley; Multi-V
2006KenworthW90014.6LL6—Fan and AlternatorW/ 8-Rib Belt; Smooth Pulley; Multi-V
2006Peterbilt37914.6LL6—Fan and AlternatorW/ 8-Rib Belt; Smooth Pulley; Multi-V
2006Peterbilt38714.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2006Sterling TruckAT950014.6LL6DIESELFan and AlternatorSmooth Pulley; Multi-V
2006Western Star4900EX14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2006Western Star4900FA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2006Western Star4900SA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2005FreightlinerCentury Class14.6LL6DIESELFan and AlternatorSmooth Pulley; Multi-V
2005FreightlinerColumbia14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2005FreightlinerCoronado14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2005International5600i15.2LL6—AlternatorSmooth Pulley; Multi-V
2005International9400i SBA15.2LL6—AlternatorSmooth Pulley; Multi-V
2005International9900i15.2LL6—AlternatorSmooth Pulley; Multi-V
2005International9900ix15.2LL6—AlternatorSmooth Pulley; Multi-V
2005KenworthT80014.6LL6DIESELFan and AlternatorSmooth Pulley; Multi-V
2005KenworthT80015.8LL6—AlternatorSmooth Pulley; Multi-V
2005KenworthW90014.6LL6—AlternatorSmooth Pulley; Multi-V
2005Peterbilt37914.6LL6—Fan and AlternatorW/ 8-Rib Belt; Smooth Pulley; Multi-V
2005Peterbilt38714.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2005Sterling TruckAT950014.6LL6—Fan and AlternatorSmooth Pulley; Multi-V
2005Western Star4900EX14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2005Western Star4900FA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2005Western Star4900SA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2004FreightlinerColumbia14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2004International5600i14.6LL6—AlternatorSmooth Pulley; Multi-V
2004International9400i SBA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2004International9400i SBA15.2LL6DIESELAlternator and Air ConditioningSmooth Pulley; Multi-V
2004International9900i14.6LL6—AlternatorSmooth Pulley; Multi-V
2004International9900ix14.6LL6—AlternatorSmooth Pulley; Multi-V
2004KenworthC50014.9LL6—AlternatorSmooth Pulley; Multi-V
2004KenworthW90014.6LL6—AlternatorSmooth Pulley; Multi-V
2004Peterbilt37914.6LL6—AlternatorSmooth Pulley; Multi-V
2004Sterling TruckAT950014.6LL6—Fan and AlternatorSmooth Pulley; Multi-V
2004Western Star4900EX14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2004Western Star4900FA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2004Western Star4900SA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2003Western Star4900EX14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2003Western Star4900FA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2003Western Star4900SA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2002Western Star490014.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2002Western Star4900E14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2002Western Star4900EX14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2002Western Star4900FA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
2002Western Star4900SA14.6LL6DIESELAlternatorSmooth Pulley; Multi-V
Directly replaces or cross-references 15 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dayco — 89447Dayco — 89462Gates — 385692002279310011831024333104027347796336912804299053492010523527677B001KOL9C8D11862621GT38569