Cummins 6406582 Belt Tensioner Assembly Dodge Ram 03-24
Cummins 6406582 Belt Tensioner Assembly Dodge Ram 03-24
BRAND: Cummins | SKU: Cummins-6406582

Cummins 6406582 Belt Tensioner Assembly Dodge Ram 03-26

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OEM Cummins 6406582 Belt Tensioner Assembly for 5.9L & 6.7L Cummins Engines Restore proper accessory drive performance with the Cummins 6406582 Serpentine Belt Tensioner Assembly, the updated OEM replacement for Cummins 3947574. Designed for Dodge Ram and Ram trucks equipped with 5.9L and 6.7L Cummins diesel engines, this spring-loaded tensioner maintains consistent belt pressure to prevent slippage, excessive wear, and unwanted belt noise. Over time, belt tensioner springs can weaken, causing squealing, poor belt tracking, and reduced reliability. Replacing a worn tensioner helps ensure optimal engine performance and dependable operation. Fits: 2003-2026 Ram 2500 2003-2026 Ram 3500 2007.5-2026 Ram 4500 2007.5-2026 Ram 5500 5.9L Cummins & 6.7L Cummins Diesel Engines Cross Reference: Cummins 3947574 Mopar 5086958AA Why Choose Genuine Cummins Parts? Exact OEM fit and function Premium-quality materials for extended service life Reduced downtime with straightforward installation Backed by Cummins warranty protection
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2003 to 2026 Dodge Ram and Ram Cummins 3947574 Serpentine Belt Tensioner Assembly 

OEM Cummins Tensioner Assembly 3947574 is for 2003 to 2026 Model Dodge Ram Diesels and has now been superseded by the new Cummins 6406582 tensioner assembly.

Cummins 6406582 Belt Tensioner Assembly Applications:

  • 2003 to 2004 Dodge Ram 2500 and 3500 Cummins CR 5.9L engines
  • 2004.5 to 2007 Dodge Ram 2500 and 3500 Cummins CR 5.9L engines
  • 2007.5 to 2009 Dodge Ram 2500, 3500, 4500, and 5500 Cummins 6.7L engines
  • 2010 to 2018 Dodge Ram 2500, 3500, 4500, and 5500 Cummins 6.7L engines.
  • 2019 to 2026 Ram 2500, 3500, 4500, and 5500 Cummins 6.7L engines.

The Cummins 6406582 Belt Tensioner Assembly is for the following Dodge Ram trucks equipped with the Cummins 5.9L or 6.7L diesel.

  • Dodge Ram 2500 2WD and 4WD
  • Dodge Ram 3500 2WD and 4WD
  • Dodge Ram 4500 2WD and 4WD
  • Dodge Ram 5500 2WD and 4WD

This Cummins 6406582 Serpentine Belt Tensioner Assembly information:

  • The Cummins 6406582 Belt Tensioner Assembly is a spring-loaded pulley that keeps the serpentine belt tension on the pulleys. 
  • This Belt Tensioner Assembly is considered a wear item and will need to be replaced.
  • With time and distance, this Belt Tensioner Assemblies spring can weaken or break, allowing the serpentine belt to come loose.
  • Installing a new Cummins Belt Tensioner Assembly will keep the belt in the proper position and tension.
  • This belt tensioner is a brand-new OEM Cummins part.

Cummins 6406582 Belt Tensioner Assembly Cross Reference:

The use of the OEM Cummins 6406582 Belt Tensioner Assembly ensures:

  • Optimum load-based serpentine belt tension for peak engine performance. 
  • A direct fit for a straightforward installation.
  • OEM high quality materials for long-term durability.

What are the benefits obtained by purchasing an OEM Cummins part?

  • Genuine Cummins Parts are backed by a manufacturer's warranty.
  • Genuine Cummins Parts provide optimum engine efficiency and peak power levels you need to get the job done.
  • OEM Cummins parts provide the exact fit for a straightforward installation, reducing downtime.
  • Cummins parts ensure you're up and running for financial protection and peace of mind.

Product Note: Cummins Parts Are A Non-Returnable Item. Please ensure you have ordered the correct part for your Cummins diesel engine!

  • By KLM Performance
  • Engine : 5.9L Cummins | 6.7L Cummins
  • Item Number: Cummins 6406582
  • Make: Cummins | Dodge | Ram
  • Model : 2500 | 3500 | 4500 | 5500
  • Year : 2003 | 2004 | 2004.5 | 2005 | 2005.5 | 2006 | 2007 | 2007.5 | 2008 | 2008.5 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016  | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026
  • Manufacturer Par026t No: Cummins 6406582
  • Product Application: 2003 to 2026 Dodge Ram and Ram 2500, 3500, 4500, and 5500 series trucks with the 5.9L and 6.7L Cummins Diesels
  • Height: 4
  • Width: 10
  • Brand: Cummins
  • FAQ: How do I know if my serpentine belt tensioner is bad? A failing serpentine belt tensioner will create an unusual noise that is emitted by the tensioner or the drive belts. This drive belt noise may resemble a squeal or a squeak, it is possible that the belt tensioner is loose. This new and unusual noise is apparent upon a cold start.
  • Part Number: 6406582
  • Manufacturer: Cummins
  • Product Note: Cummins Parts Are A Non-Returnable Item. Please ensure you have ordered the correct part for your Cummins diesel engine! If you have any questions about what part you need please email us with your ESN - Engine Serial Number,
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