Roadmax 6K870AP Serpentine Belt - Alternator, Fan or Alternator and Power Steering

Roadmax 6K870AP Serpentine Belt Overview

The Roadmax 6K870AP is an automotive V-ribbed belt built for OE-style performance in a standard-duty design. It uses EPDM construction with polyester cord reinforcement to deliver dependable accessory drive operation for a wide range of vehicles, including Mercedes-Benz, Genesis, Hyundai, and Chevrolet applications.

With a 6-rib profile, 20 mm top width, and 87.03 in effective length, this serpentine belt is sized for specific accessory drive systems that call for a K-section belt. The Roadmax 6K870AP is a practical choice for drivers replacing a worn belt on vehicles such as the Mercedes-Benz E350, Sprinter, or Genesis G80.

Key Features

• EPDM rubber construction for durable belt performance
• Polyester cord reinforcement for stable tension handling
• 6-rib V-ribbed design for accessory drive applications
• 20 mm top width and 87.03 in effective length
• OE Performance grade in a standard belt design
• Cross section designation: K
• Outside circumference: 87.76 in

Product Details

Roadmax positions the 6K870AP as a value-focused serpentine belt for customers who want quality without stepping up to a premium belt line. The standard Automotive V-Ribbed Belt (Standard) construction is suited for everyday accessory drive service, while the EPDM material helps the belt maintain its shape and flexibility under normal engine bay conditions. This part number, 6K870AP, also cross-references Gates K060870 for the same application.

Fitment includes 2017-2022 Genesis G90, 2017-2020 Genesis G80, 2014-2016 Hyundai Genesis, 2014-2016 Hyundai Equus, 2015-2017 Kia K900, and multiple Mercedes-Benz applications such as E300, E350, GL450, GLE400, GLE43 AMG, GLS450, SL450, SLK350, Sprinter, Sprinter 2500, and Sprinter 3500. It also fits select Chevrolet, GMC, Ford, Mazda, Volkswagen, Pontiac, Oldsmobile, Cadillac, and Isuzu models listed in the fitment data.

What This Belt Helps Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or visible wear on the belt surface
• Loss of proper belt tension or belt tracking issues
• Accessory drive noise on vehicles with aging serpentine systems
• Replacement needs during routine belt service on OE-style applications

Installation Notes

• Verify belt length, rib count, and cross section before installation.
• Check the tensioner and idler pulleys for wear before installing a new belt.
• Some listed applications note that tensioner replacement is recommended.
• Confirm whether the vehicle is equipped with A.C. or the specific alternator configuration shown in the fitment notes.
• Use the vehicle’s belt routing diagram to ensure correct installation.

Quality Assurance

The Roadmax 6K870AP is built as an OE Performance standard serpentine belt using EPDM and polyester cord materials for consistent accessory drive service. Its design reflects Roadmax’s budget-conscious product line approach: quality-focused replacement parts for drivers who do not require a premium belt upgrade.