Ram 2500 Serpentine Belt Drive Component Kit Guide (2011-2018)
Everything you need to know before replacing the serpentine belt, tensioner, and pulleys on your Ram 2500.
- Always replace the serpentine belt, tensioner, and idler pulleys as a complete kit to ensure reliability.
- Squealing, chirping, or grinding noises from the engine bay demand an immediate inspection of the belt drive system.
- High-quality aftermarket brands like Gates are a reliable and cost-effective alternative to OEM parts for this repair.
- Do not drive your truck if you suspect a serpentine belt failure, as it can cause overheating, loss of steering, and leave you stranded.
Understanding Your Ram 2500's Serpentine Belt System
The serpentine belt system on your Ram 2500, whether it has a Hemi or Cummins engine, is the workhorse that powers your truck's essential accessories. It's not just a simple rubber belt; it's a system that includes a spring-loaded tensioner and one or more idler pulleys that guide the belt and keep it tight. When this system fails, it's not a minor inconvenience—it can leave you stranded by causing the engine to overheat, the battery to die, or the power steering to fail.
Symptoms of a Failing Serpentine Belt System
A failing belt, tensioner, or idler pulley will usually give you warning signs. Ignoring them can lead to the belt breaking, which causes an immediate and complete failure of all the accessories it powers. Watch for these symptoms:
- Squealing or Chirping Noises: This is the most common symptom, often heard when starting the engine or accelerating. It's caused by the belt slipping because the tensioner is weak or the belt itself is worn.
- Grinding or Buzzing Sounds: If you hear a grinding or buzzing noise that changes with engine RPM, it often points to a failing bearing inside the tensioner or an idler pulley.
- Visible Wear: Inspect the belt for cracks, frayed edges, glazing, or missing ribs. Also, look at the tensioner; if its arm is bouncing erratically or the pulley is misaligned, it needs replacement.
- Accessory Problems: Dimming headlights, a battery warning light, engine overheating, or loss of power steering are all serious signs that the belt is not properly driving the accessories.
Can You Drive with a Bad Serpentine Belt?
It is not recommended. A failing belt can break at any moment, causing an immediate loss of power steering, water pump function, and electrical charging. This can lead to engine overheating and leave you stranded. If you suspect a problem, get it inspected immediately.
Choosing the Right Aftermarket Kit: OEM vs. Aftermarket
When it's time for a replacement, you have a choice between original equipment (OEM) from Mopar and aftermarket kits. While OEM parts are guaranteed to fit, high-quality aftermarket kits from reputable brands offer excellent performance and value.
For the 2011-2018 Ram 2500, Gates is a well-regarded aftermarket brand that is frequently recommended by owners and mechanics. A Gates component kit typically includes the serpentine belt, the tensioner assembly, and the required idler pulleys, ensuring all wear items are replaced at once. This is the smart way to do the job, as it prevents a new belt from being damaged by an old, failing tensioner or pulley.
Pro Tip: Always replace the belt, tensioner, and idler pulleys together as a kit. The labor is nearly the same since the belt has to come off anyway. This prevents one old component from causing premature failure of the new parts.
Cost to Replace a Serpentine Belt Drive Kit on a 2011-2018 Ram 2500
Costs can vary based on your engine (Hemi vs. Cummins) and local labor rates. The job is more involved on the 6.7L Cummins due to a tighter engine bay. Below are estimated costs.
| Part or Service | Estimated Cost |
|---|---|
| New Aftermarket Kit (e.g., Gates) | $151.44 - $328.32 |
| New OEM (Mopar) Kit | $250 - $450+ |
| Shop Labor | $150 - $300 |
| Total Estimated Cost (Aftermarket) | $300 - $630 |
Frequently Asked Questions
When should I replace my Ram 2500's serpentine belt kit?
Most manufacturers and mechanics recommend inspection around 60,000 miles and replacement around the 100,000-mile mark as preventative maintenance. However, you should replace it immediately if you notice any signs of wear or failure, regardless of mileage.
Is this a DIY job?
Yes, for a mechanically inclined person, this is a feasible DIY project. 🎬 See this replacement walkthrough for the 6.4L V8 Hemi You will need a good socket set and a serpentine belt tool or a long breaker bar to release the belt tension. The job is generally easier on the Hemi engines than the 6.7L Cummins, which has less space to work.
🎬 Watch: An easy bungee cord hack for Cummins belt replacementAre there any recalls for this?
There are no widespread recalls or Technical Service Bulletins (TSBs) for the serpentine belt drive system on the 2011-2018 Ram 2500. A specific recall (NHTSA 16V-739) existed for the alternator on some 2013 Cummins models, but it did not pertain to the belt or tensioner itself.
Does my engine type matter?
Yes, it matters a lot. The 5.7L Hemi, 6.4L Hemi, and 6.7L Cummins engines all use different belts, tensioners, and pulley layouts. Furthermore, some 6.7L Cummins trucks are equipped with dual alternators, which requires a different belt. Always verify the correct parts for your specific engine and configuration before ordering.
Helpful Videos
Technical Specifications
OEM Part Numbers: 4627589AA
Component kits vary significantly based on engine (5.7L Hemi, 6.4L Hemi, 6.7L Cummins) and configuration (e.g., 6.7L Cummins with single vs. dual alternators). Always confirm fitment with your vehicle's specific details. The OEM part number 4627589AA fits 2013-2018 Ram trucks with the 6.7L Cummins and dual alternators.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Ram 2500:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Understanding Your Ram 2500's Serpentine Belt System
- Symptoms of a Failing Serpentine Belt System
- Can You Drive with a Bad Serpentine Belt?
- Choosing the Right Aftermarket Kit: OEM vs. Aftermarket
- Cost to Replace a Serpentine Belt Drive Kit on a 2011-2018 Ram 2500
- Frequently Asked Questions
- 🎟️ Get 5% Off