Belt Tensioner | Volvo / Mack | Volvo 23669027 / 21454379 ~ Dayco 89477 | FleetRun FR-ENGN247


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Part Number

  • FleetRun: FR-ENGN247

Cross Reference Part Number

  • Volvo: 23669027 / 21454379 /  20897204
  • Mack: 21454379 / 57QL0520M
  • Dayco: 89477
  • Gates: 38671
  • Goodyear: 49601
  • Continental: 49601


  • Material: Steel
  • Material Contact Surface: Smooth/Backside
  • Bearing Bore Inside Diameter: 1.18 in. / 30mm
  • Pulley Outside Diameter: 3.40 in. / 86.5mm
  • Pulley Width: 1.57 in. / 40mm
  • 2 Mounting Bolt Holes

    Please note: this is an aftermarket part, the use of other manufacturer's names, part numbers or trademarks is for informational purposes only.

    Please verify OEM part numbers before purchasing, FleetRun assumes no liability related to product use and fitment.

    Introducing the FleetRun FR-ENGN247 belt tensioner for the Volvo D13 engine in a Volvo VNL semi truck. This high-quality replacement part is designed to meet the exact specifications of your vehicle, ensuring a perfect fit and reliable performance.

    Built with heavy-duty construction and using only the highest quality materials, the FleetRun FR-ENGN247 belt tensioner is engineered to withstand the demands of your semi truck.

    The FleetRun FR-ENGN247 belt tensioner is a smart choice for any semi truck owner or fleet manager looking for a dependable replacement part. It is specifically designed to meet the demands of your Volvo D13 engine. And it is an alternative to OEM belt tensioner, in a more cost-effective way. It is also designed to be easy to install, so you can get your truck back on the road quickly.

    In addition to the belt tensioner, FleetRun also offers a wide range of other heavy duty replacement parts for semi trucks, including pulleys, and other items that may be worn out. All of FleetRun’s products are designed and manufactured to the highest standards, so you can be confident in the performance and durability of our parts.

    If you're looking for a reliable and cost-effective replacement belt tensioner for your Volvo VNL semi truck, look no further than the FleetRun FR-ENGN247. This heavy-duty belt tensioner is an excellent choice for any truck owner or fleet manager looking for a dependable replacement part that won’t break the bank. And it will help to keep your engine running smoothly and efficiently, so you can keep your fleet on the road and your business running smoothly.

    • For other information such as tips and tricks or troubleshooting from technicians and shops visit our Shop Talk page from our menu
    • 2008-2018 Volvo VNL, VNM, VNR, VNX, VHD with a Volvo D13 engine
    • 2018-2023+ Mack Anthem with a Mack MP8 engine
    • 2007-2017 Mack Pinnacle with a Mack MP8 engine
    • 2007-2023+ Mack Granite with a Mack MP8 engine

    How to check for belt, belt tensioner and/or pulley noise?

    • The DIY method is to loosen or remove both of the engine belts entirely and inspect them for cracks or brittleness, next inspect the pulleys on the tensioners and the idler pulleys by spinning them by hand and listening for noise and if the bearings bind while spinning, also check the tensioners for free-play side to side and if they are still firm in holding tension.