Roadmax 6K785AP Serpentine Belt - Accessory Drive, Alternator or Water Pump and Air Conditioning

Roadmax 6K785AP Serpentine Belt Overview

The Roadmax 6K785AP is an automotive V-ribbed belt built for drivers who want dependable OE-style performance without stepping up to a premium belt line. Made with EPDM and polyester cord reinforcement, it is sized for accessory drive systems that rely on a 6-rib serpentine belt for stable operation.

Roadmax’s Automotive V-Ribbed Belt (Standard) line focuses on practical replacement value for everyday repairs. The 6K785AP follows OE performance sizing and application coverage for a wide range of vehicles, including Chevrolet Silverado 2500 HD, GMC Sierra 3500 HD, Ford Explorer, BMW 328i, and Cadillac CT4 applications.

Key Features

• EPDM construction for durable accessory drive service
• Polyester cord material for belt stability and strength
• 6-rib design for common serpentine drive layouts
• OE performance grade for direct replacement use
• Effective length: 1993 mm (78.47 in.)
• Outside circumference: 2007 mm (79.034 in.)
• Top width: 20 mm (.807 in.)

Detailed Product Description

The Roadmax 6K785AP serpentine belt is a standard automotive V-ribbed belt designed around OE-style dimensions and fitment coverage. Its EPDM belt material is selected for modern accessory drive systems, while the polyester cord construction supports consistent belt tracking and load handling. This part number, 6K785AP, is cross-referenced to Gates K060785 for the same application.

Compatible With 2020-2025 Chevrolet Silverado 2500 HD and 2020-2025 GMC Sierra 3500 HD, this belt also covers 2024-2025 Ford Explorer, 2007-2013 BMW 328i, and 2022-2026 Cadillac CT4 applications. Additional coverage includes 2020-2024 Lincoln Aviator, 2015-2019 Cadillac CTS, 2004 and 2006 Pontiac GTO, and 2002-2003 Saturn Vue. The part number 6K785AP is also listed across multiple interchange references for broad catalog matching.

Common Problems This Belt Can Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or visible wear on the existing serpentine belt
• Loss of belt tension or inconsistent accessory drive operation
• Charging, cooling, or A/C drive issues tied to belt condition
• Replacement needs during routine maintenance on high-mileage vehicles

Installation Notes and Fitment Tips

Verify belt routing, rib count, and length before installation. This 6-rib belt is listed for specific configurations such as 2020-2025 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD with single alternator, 2024-2025 Ford Explorer without start-stop engine, and 2007-2010 BMW X5 without traction control for alternator, water pump, and air conditioning applications. Some listings also note alternate alternator output or accessory-drive configurations, so confirm the vehicle build details against the application notes before ordering.

Fits 2022-2026 Cadillac CT4, N/A; Fits 2023-2025 Chevrolet Express 2500, N/A; Fits 2023-2025 Chevrolet Express 3500, N/A; Fits 2020-2025 Chevrolet Silverado 2500 HD, N/A; Fits 2020-2025 Chevrolet Silverado 3500 HD, N/A; Fits 2024-2025 Ford Explorer, N/A; Fits 2023-2025 GMC Savana 2500, N/A; Fits 2023-2025 GMC Savana 3500, N/A; Fits 2020-2025 GMC Sierra 2500 HD, N/A; Fits 2020-2025 GMC Sierra 3500 HD, N/A; Fits 2020-2024 Lincoln Aviator, N/A; Fits 2020-2023 Ford Explorer, N/A; Fits 2021-2022 Chevrolet Express 2500, N/A; Fits 2018-2019 Chevrolet Express 2500, N/A; Fits 2021-2022 Chevrolet Express 3500, N/A; Fits 2018-2019 Chevrolet Express 3500, N/A; Fits 2019-2022 GMC Savana 2500, N/A; Fits 2019-2022 GMC Savana 3500, N/A; Fits 2016-2019 Cadillac ATS, N/A; Fits 2015-2019 Cadillac CTS, N/A; Fits 2018 GMC Savana 2500, N/A; Fits 2018 GMC Savana 3500, N/A; Fits 2008-2013 BMW 128i, N/A; Fits 2007-2013 BMW 328i, N/A; Fits 2009-2013 BMW 328i xDrive, N/A; Fits 2006-2011 BMW 323i, N/A; Fits 2008-2010 BMW 528i, N/A; Fits 2009-2010 BMW 528i xDrive, N/A; Fits 2007-2010 BMW X3, N/A; Fits 2007-2010 BMW X5, Alternator, Water Pump and Air Conditioning; Fits 2007-2008 BMW 328xi, N/A; Fits 2008 BMW 528xi, N/A; Fits 2006-2007 BMW 525i, N/A; Fits 2006-2007 BMW 525xi, N/A; Fits 2006-2007 BMW 530i, N/A; Fits 2006-2007 BMW 530xi, N/A; Fits 2006 BMW 325i, N/A; Fits 2006 BMW 325xi, N/A; Fits 2006 BMW 330i, N/A; Fits 2006 BMW 330xi, N/A; Fits 2006 Pontiac GTO, Accessory Drive; Fits 2004 Pontiac GTO, Accessory Drive; Fits 2002-2003 Saturn Vue, N/A; Fits 1987 Jeep Wrangler, N/A; Fits 1983-1984 Ford Mustang, N/A; Fits 1983-1984 Mercury Capri, N/A; Fits 1982-1983 Ford F-100, N/A; Fits 1983 Mercury Marquis, N/A.

Quality Assurance

Roadmax positions this Automotive V-Ribbed Belt (Standard) line as a value-focused OE performance replacement for drivers who want quality construction and correct fitment without premium-belt pricing. The 6K785AP is built with EPDM and polyester cord materials to support everyday accessory drive service.