Roadmax 6K858AP Serpentine Belt

Roadmax 6K858AP Serpentine Belt Overview

The Roadmax 6K858AP is an automotive V-ribbed belt built for drivers who want a practical OE-performance replacement without stepping up to a premium-duty belt. Made with EPDM and polyester cord reinforcement, it is sized for specific Ford, Mazda, Mercury, Mercedes-Benz, Buick, and Pontiac applications that use a 6-rib accessory drive belt.

Use this belt when you need a direct replacement for select Ford Ranger, Ford Focus, and Mazda B3000 applications, along with other listed vehicles that require the same belt profile and length. The Roadmax 6K858AP part number is also referenced in cross-application catalogs for matching service needs.

Key Features

• EPDM construction for accessory drive belt service
• Polyester cord material for reinforced belt stability
• 6-rib design for compatible serpentine drive systems
• OE Performance grade for standard replacement use
• Top width: 20 mm (.807 in.)
• Effective length: 2179 mm (85.78 in.)
• Outside circumference: 2195 mm (86.43 in.)
• Cross section designation: K

Product Details

Roadmax positions the Automotive V-Ribbed Belt (Standard) line as a value-focused replacement option for customers who want dependable quality for everyday service. The 6K858AP follows the OE-style dimensions needed for proper belt routing and accessory drive operation, making it a practical choice for vehicles such as the Ford Focus, Ford Ranger, and Mazda B3000 when the listed engine and equipment conditions match. This part cross-references Gates K060858 and Dayco 5060858 for the same application.

Common Problems This Belt Can Address

• Squealing or chirping from a worn serpentine belt
• Cracking, glazing, or visible wear on the accessory drive belt
• Loss of proper belt tension due to age-related stretch
• Accessory drive noise caused by belt surface deterioration
• Reduced belt grip on pulleys in worn service conditions

Installation Notes and Tips

Verify belt routing, rib count, and measured length before installation. This belt is listed for specific applications including 2003-2007 Ford Focus, 2005-2006 Ford Ranger, 1997-2001 Ford Ranger, 2005-2006 Mazda B3000, 1998-2001 Mazda B3000, and select Mercedes-Benz, Mercury, Buick, and Pontiac applications. Confirm engine, accessory, and A/C configuration exactly as shown in the fitment notes, since several listings are for vehicles without air conditioning or with date-specific engine requirements.

Inspect pulleys, tensioners, and idlers during service so the new belt can track correctly and maintain consistent operation.

Quality Assurance

Roadmax uses EPDM belt material and polyester cord reinforcement in this OE-performance replacement line to support standard accessory drive service. The 6K858AP is built as a practical replacement for vehicles that need the specified V-ribbed belt dimensions and rib profile.