Roadmax 6K551AP Serpentine Belt - Air Conditioning and Alternator, Alternator and Air Conditioning or Alternator and Water Pump

Roadmax 6K551AP Serpentine Belt Overview

The Roadmax 6K551AP is an automotive V-ribbed belt built for accessory drive systems that need a standard replacement belt with practical value. Made with EPDM and polyester cord reinforcement, it is sized for 6-rib applications and cross-references common OE and aftermarket part numbers for a wide range of vehicles.

Roadmax’s Automotive V-Ribbed Belt (Standard) line is aimed at budget-conscious buyers who want dependable construction without stepping up to a premium-performance belt. The 6K551AP follows that approach with a straightforward design for everyday service needs.

Key Features

• Part number: 6K551AP
• Type: Automotive V-Ribbed Belt (Standard)
• Material: EPDM for wear resistance in accessory drive service
• Polyester cord material for belt stability
• 6-rib design for multi-groove pulley systems
• Top width: 20 mm (.807 in.)
• Effective length: 1400 mm (55.13 in.)
• Outside circumference: 1415 mm (55.7 in.)

Fitment and Cross References

Compatible with select applications including Fits 2020-2023 Land Rover Range Rover, Fits 2020-2023 Land Rover Defender 110, Fits 2021-2023 Land Rover Discovery, and Fits 2011 Ford Mustang, Alternator and Water Pump.

This part cross-references Gates K060551 and Continental 4060550 for the same application.

Detailed Description

The Roadmax 6K551AP serpentine belt is engineered for accessory drive systems that route power to components such as the alternator, air conditioning compressor, and water pump, depending on vehicle configuration. Its EPDM construction and polyester reinforcement support consistent belt tracking in 6-rib pulley systems, while the 55.13-inch effective length and 20 mm top width help match the specified drive layout. This belt is used across a broad range of vehicles, including Land Rover Range Rover, Land Rover Defender 110, and Ford Mustang applications, along with additional Chrysler, Dodge, Mazda, Mercury, and Land Rover fitments listed for the part.

Common Problems This Belt Can Address

• Squealing from a worn or glazed accessory drive belt
• Cracking, fraying, or rib wear on the existing serpentine belt
• Loss of proper drive to the alternator, air conditioning, or water pump
• Belt noise caused by age-related EPDM deterioration
• Incorrect belt length after a previous replacement

Installation Notes and Tips

Verify pulley count, rib count, and belt routing before installation. Confirm the vehicle’s exact engine and accessory drive configuration, especially on applications with notes such as alternator and water pump or alternator and air conditioning. Inspect tensioners, idlers, and pulley alignment before fitting the new belt, since worn components can shorten belt life and create noise. Compare the removed belt length and profile to the 6K551AP specifications before final installation.

Quality Assurance

Roadmax positions this belt as a standard replacement option for buyers who want quality construction at a practical level. The EPDM belt material and polyester cord reinforcement support everyday accessory drive service across confirmed fitments, including Land Rover Range Rover Sport, Land Rover Defender 90, and Ford Mustang applications.