Ram 1500 · Elgin CDJR · Streamwood, IL
Ram 1500 Serpentine Belt Guide
When does the serpentine belt on a Ram 1500 need to be replaced, and how can you tell it is worn? Here is what the 2026 Ram 1500 owner's manual says about the accessory drive belt (serpentine belt): the replacement interval in the Maintenance Plan, which cracks are normal, the conditions that call for a new belt and the safety steps for an inspection.
150,000 miReplace accessory drive belt
15 yearsOr 240,000 km, whichever comes first
Stop/StartUse an OEM grade Mopar belt
7Replacement conditions listed
The short answer
The 2026 Ram 1500 owner's manual calls the serpentine belt the accessory drive belt. Its Maintenance Plan says to replace the accessory drive belt and to inspect the accessory drive belt tensioner and pulley (replacing them if necessary) at 150,000 miles (240,000 km) or 15 years, whichever comes first. Trucks equipped with Stop/Start should get an OEM grade Mopar belt. Between those services, have the belt replaced if it has cracks running along a rib, excessive wear, frayed cords or severe glazing.
When should the Ram 1500 serpentine belt be replaced?
The manual's Maintenance Plan lists three accessory drive belt items, all in the 150,000 mile column:
| Maintenance Plan item | When, per the 2026 manual |
|---|---|
| Replace accessory drive belt | 150,000 miles (240,000 km) or 15 years, whichever comes first |
| Inspect accessory drive belt tensioner and pulley, replace if necessary | 150,000 miles (240,000 km) or 15 years, whichever comes first |
| If equipped with Stop/Start, replace accessory drive belt with OEM grade Mopar belt | 150,000 miles (240,000 km) or 15 years, whichever comes first |
The manual notes that more frequent maintenance may be needed in severe conditions, such as dusty areas and very short trip driving, and that in some extreme conditions, additional maintenance not specified in the maintenance schedule may be required.
From the 2026 Ram 1500 owner's manual (Scheduled Servicing, Maintenance Plan), read November 8, 2026.
Which serpentine belt cracks are normal?
When inspecting accessory drive belts, the manual says small cracks that run across the ribbed surface of the belt, from rib to rib, are considered normal and are not a reason to replace the belt. However, cracks running along a rib (not across) are not normal, and any belt with cracks running along a rib must be replaced. Also have the belt replaced if it has excessive wear, frayed cords or severe glazing.
From the 2026 Ram 1500 owner's manual (Accessory Drive Belt Inspection), read November 8, 2026.
Signs the Ram 1500 serpentine belt needs to be replaced
The manual lists these conditions that would require replacement of the accessory belt (serpentine belt):
- Rib chunking (one or more ribs has separated from the belt body)
- Rib or belt wear
- Longitudinal belt cracking (cracks between two ribs)
- Belt slips
- Groove jumping (the belt does not maintain correct position on the pulley)
- Belt broken (the problem must be identified and corrected before a new belt is installed)
- Noise (an objectionable squeal, squeak or rumble is heard or felt while the drive belt is in operation)
From the 2026 Ram 1500 owner's manual (Accessory Drive Belt Inspection, Accessory Belt (Serpentine Belt)), read November 8, 2026.
Inspecting the belt safely
The manual warns not to attempt to inspect an accessory drive belt with the vehicle running. When working near the radiator cooling fan, disconnect the fan motor lead: the fan is temperature controlled and can start at any time regardless of ignition mode, and you could be injured by the moving fan blades.
It adds that some belt conditions can be caused by a faulty component such as a belt pulley, so belt pulleys should be carefully inspected for damage and proper alignment, and that belt replacement on some models requires the use of special tools, so it recommends having the vehicle serviced at an authorized dealer.
From the 2026 Ram 1500 owner's manual (Accessory Drive Belt Inspection), read November 8, 2026.
Ram 1500 service at Elgin CDJR
If your Ram 1500 belt squeals, slips or shows cracks along the ribs, our Ram service center can inspect the belt, tensioner and pulleys and replace the belt. Our service department is open Monday to Friday 7 a.m. to 7 p.m. and Saturday 7:30 a.m. to 4 p.m., and is closed Sunday. Elgin CDJR is at 1500 W. Lake St. in Streamwood. Get directions.
Ram 1500 Serpentine Belt FAQ
How often should the serpentine belt be replaced on a Ram 1500?
The 2026 manual's Maintenance Plan says to replace the accessory drive belt at 150,000 miles (240,000 km) or 15 years, whichever comes first.
Is the serpentine belt the same as the accessory drive belt?
Yes. The manual's inspection section is titled Accessory Drive Belt Inspection and labels the part Accessory Belt (Serpentine Belt).
Are cracks in a Ram 1500 serpentine belt normal?
Small cracks that run across the ribbed surface from rib to rib are considered normal. Cracks running along a rib are not normal, and a belt with them must be replaced.
What belt should a Ram 1500 with Stop/Start use?
The Maintenance Plan says that if the truck is equipped with Stop/Start, replace the accessory drive belt with an OEM grade Mopar belt.
Why is my Ram 1500 belt squealing?
The manual lists noise (an objectionable squeal, squeak or rumble while the belt is in operation) and belt slip among the conditions that would require replacement, and notes that some conditions can be caused by a faulty component such as a belt pulley.
What are your service hours?
Monday to Friday 7 a.m. to 7 p.m. and Saturday 7:30 a.m. to 4 p.m. We are closed Sunday.
Bring your Ram 1500 to Streamwood
Visit Elgin CDJR at 1500 W. Lake St. in Streamwood.
Sources
The guidance on this page is from the 2026 Ram 1500 owner's manual on Mopar (PDF dated February 12, 2026), read November 8, 2026. Our address and service hours are from our own website, checked the same day.