Engine Mount Bushing - Rear | Volvo/Mack | Volvo 20499469 | FleetRun FR-ENGN823


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Part Number

  • FleetRun: FR-ENGN823

Cross Reference Part Number

  • Volvo: 20499469 / 20723224 / 21228153
  • Mack: 20QL414M4
  • Automann: MV27027
  • PAI: 803843 / 172213
  • Misc. Industry Part Number: 20499469KTP / PPP20499469 / 030.295 / MPGS-29823 / ATX29823


  • Mounting Lock Nut Thread: M20 x 2.5
  • Mounting Lock Nut Distance - Center To Center: 2.18 inches
  • Overall Length: 10.00 inches
  • Overall Width: 8.00 inches
  • Overall Height: 5.00 inches (side profile of the mount)
  • Mounting Bolt Hole Length - Center To Center: 7.875 inches (from first to last)
  • Mounting Bolt Hole Width - Center To Center: 7.10 inches (from first to last)
  • Mounting Bolt Hole Diameter: 0.58 inches
  • Mounting Bolt Hole Distance - Center To Center: 1.95 inches (between each hole)

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.

At FleetRun, we offer a wide selection of engine mount rubber cushions at competitive prices. Our rubber cushions are made from high-quality materials and are always in stock to ensure prompt shipment to our valued customers. We understand the importance of a reliable and durable engine mount system, which is why we take pride in providing top-notch material that delivers exceptional performance and value for your money. With positive reviews from satisfied customers, you can trust in the quality and effectiveness of our products. Additionally, our hassle-free return policy ensures your satisfaction with every purchase. Shop with confidence at FleetRun, your trusted store for engine mount rubber cushions that are a great price without compromising on quality.

Introducing the FleetRun FR-ENGN823 engine mount/cushion - the perfect solution for preventing vibrations and shaking in your Volvo or Mack trucks. These top-quality mounts bushings/cushions acts as a buffer between your engine and the frame of your truck, ensuring a smooth ride without any annoying vibrations.

With cross-reference part numbers from industry-leading brands like Volvo, Mack, Automann, and PAI, the FleetRun FR-ENGN823 is built to last and withstand the most extreme conditions, making engine mount replacement easy. Its specifications, including mounting lock nut thread and distance, overall length, width, height, and bolt hole diameter and distance, ensure a perfect fit for 2008-2018 Volvo VNL, VN Series, and VNR, as well as 2008-2023+ Mack Granite, Pinnacle, and Anthem models with Volvo D13, Cummins ISX, Cummins X15, Mack MP7, and Mack MP8 engines.

If your trucks experiencing shaking or vibrating during engine brake application, engine load or acceleration, it's time to check your motor mounts. A broken motor mount can cause the internal mounting bracket of the mount to wobble inside the housing and rip the rubber insulator, resulting in noticeable shaking or vibrating and even causing the cab to shake. Don't let these symptoms go unchecked - replace your trucks engine mounts bushings/cushions with the FleetRun FR-ENGN823 for a smooth, hassle-free ride.

Don't sit in discomfort while you haul freight down the road - get your FleetRun FR-ENGN823 engine mount/cushion today!

  • For other information such as tips and tricks or troubleshooting from technicians and shops visit our Shop Talk page from our menu

Vehicle Make & Model

  • 2008-2018 Volvo VNL
  • 2008-2018 Volvo VN Series
  • 2008-2018 Volvo VNR
  • 2008-2023+ Mack Granite
  • 2008-2023+ Mack Pinnacle
  • 2017-2023+ Mack Anthem


  • Volvo D13
  • Cummins ISX
  • Cummins X15
  • Mack MP7
  • Mack MP8

What can cause my Volvo/Mack semi truck to shake/vibrate?

  • Although there is an endless list of symptoms that can cause vibrating or shaking:

    If your Volvo or Mack semi-truck shakes or vibrates durinng engine brake application, engine load, or acceleration, it could be due to worn-out engine mount bushings/cushions. These mount bushings/cushions act as a buffer between the engine and the frame of the truck, but when they wear out, the internal mounting bracket of the mount, which is stressed the most because of the weight of the engine/transmission, it creates freeplay and wobbles inside the housing, causing the rubber insulator to rip and ruining the cushion. This can result in noticeable shaking or vibrating when the engine brake is on, and even cause the cab to shake (you may notice your dashboard or seat shaking slightly). If you're experiencing these symptoms, it's recommended to have your engine mount bushings/cushions inspected and replaced if necessary to prevent further damage and ensure smooth operation of your truck.

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