Roadmax 5K520AP Serpentine Belt - Alternator and Power Steering

Roadmax 5K520AP Serpentine Belt Overview

The Roadmax 5K520AP is an automotive V-ribbed belt built for OE performance in a standard-duty application. It uses EPDM construction with a polyester cord for stable operation in accessory drive systems, including alternator and power steering setups on select Pontiac, Buick, and Oldsmobile vehicles.

Roadmax positions this Automotive V-Ribbed Belt (Standard) line for budget-conscious buyers who want dependable quality without stepping up to a premium belt specification. The 5-rib design and 52.1-inch effective length support proper routing and engagement in the accessory drive system.

• EPDM belt material for durable everyday service
• Polyester cord material for reinforced belt stability
• 5-rib cross section for accessory drive applications
• OE Performance grade for standard replacement needs
• Top width: 0.667 in. / 17 mm
• Effective length: 52.1 in. / 1323 mm
• Outside circumference: 52.662 in. / 1338 mm
• Compatible with alternator and power steering drive layouts on select vehicles

Product Line Details

This Roadmax Automotive V-Ribbed Belt (Standard) line is aimed at routine replacement service where a direct-fit serpentine belt is needed. The construction focuses on practical OE-style operation for vehicles that require a standard accessory drive belt rather than a premium-performance upgrade.

Detailed Fitment

• Fits 1987-1994 Pontiac Sunbird, Alternator and Power Steering
• Fits 1989-1990 Pontiac LeMans, Alternator and Power Steering
• Fits 1988-1990 Pontiac Optima, Alternator and Power Steering
• Fits 1987-1989 Pontiac Grand Am, Alternator and Power Steering
• Fits 1987-1988 Buick Skyhawk, N/A
• Fits 1987-1988 Oldsmobile Firenza, N/A

What This Belt Helps Address

• Squealing or slipping accessory drive belt noise
• Cracked, glazed, or worn serpentine belt surfaces
• Loss of alternator drive performance from belt wear
• Reduced power steering belt engagement on listed applications
• Routine maintenance replacement for aging belt systems

Installation Notes and Tips

Verify belt routing against the vehicle’s accessory drive diagram before installation. Confirm the belt length, rib count, and top width match the existing application, especially on 1987-1994 Pontiac Sunbird and other listed Pontiac, Buick, and Oldsmobile models. Inspect pulleys, tensioners, and idlers for wear before installing the new belt to help maintain proper tracking.

Quality Assurance

Roadmax uses EPDM construction and polyester cord reinforcement in this OE-performance standard belt for consistent service in everyday accessory drive applications. This part cross-references Gates K050520 and Bando 5PK1320 for the same application.