Gates K081243HD Serpentine Belt

Heavy-Duty Micro-V Belt for Fleet Use

The Gates FleetRunner Heavy Duty Micro-V Belt K081243HD is built for accessory drive systems that see frequent service and demanding operating conditions. It uses EPDM construction with a distinct green overcord for added durability, flexibility, and belt stability on heavy-duty drives.

For Ram 2500 and Ram 3500 trucks equipped with a single alternator, this serpentine belt is a direct-fit service part for maintaining accessory drive performance. The K081243HD is an OE Improved belt designed for fleet maintenance where reduced downtime matters.

Key Features

• Gates FleetRunner Heavy Duty Micro-V Belt
• Part number: K081243HD
• Heavy-duty automotive V-ribbed belt with 8 ribs
• EPDM belt material for durability and longer service life
• Polyester cord material for strength and stability
• OE Improved rating for updated service replacement performance
• Cross section: K
• Effective length: 124.31 in. (3157 mm)
• Outside circumference: 124.875 in. (3172 mm)

Product Line Details

Gates FleetRunner Heavy Duty Micro-V belts are engineered for commercial and fleet applications where accessory drive reliability is important. The EPDM construction and green overcord are used to improve flexibility and wear resistance, helping the belt maintain consistent operation in heavy-duty service.

Fitment

• Fits 2013-2018 Ram 2500, compatible with vehicles equipped with a single alternator.
• Fits 2013-2018 Ram 3500, compatible with vehicles equipped with a single alternator.

This part cross-references Continental 4081244 and Dayco 5081244 for the same application.

What It Helps Address

• Squealing or slipping accessory drive belt noise
• Cracking, glazing, or visible belt wear
• Loss of alternator drive performance
• Reduced belt stability in heavy-duty service
• Downtime caused by worn serpentine belt replacement intervals

Installation Notes

Verify the vehicle uses a single alternator before ordering. Match the belt length, rib count, and cross section to the original application, and inspect pulleys and tensioner components before installation. Confirm routing against the factory belt diagram for the Ram 2500 or Ram 3500.

Quality Assurance

Gates designs FleetRunner Heavy Duty Micro-V belts for durability, flexibility, and stable operation in demanding accessory drive systems. The K081243HD is an OE Improved replacement built for heavy-duty service requirements.