Roadmax 6K420AP Serpentine Belt

Roadmax 6K420AP Serpentine Belt Overview

The Roadmax 6K420AP 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 a polyester cord, it is sized for 6-rib accessory drive systems and is commonly used on Volkswagen, Audi, Nissan, Chrysler, Dodge, BMW, Ford, and Mercury applications.

Roadmax positions this standard belt line as a practical replacement choice for routine maintenance on accessory drive systems. If you are replacing a worn serpentine belt on a Volkswagen Jetta, Audi A3, or Nissan Maxima, this part number is built around the dimensions and rib profile needed for the listed applications.

Key Features

• Part number: 6K420AP
• Automotive V-ribbed belt, standard grade
• EPDM construction for everyday accessory drive service
• Polyester cord material for belt stability
• 6-rib design for compatible multi-groove pulleys
• OE Performance grade
• Effective length: 1067 mm (41.99 in.)
• Outside circumference: 1081 mm (42.57 in.)
• Top width: 20 mm (.807 in.)

Product Details

The Roadmax Automotive V-Ribbed Belt (Standard) line is aimed at budget-conscious buyers who still want a quality replacement belt for normal service intervals. This 6-rib serpentine belt uses EPDM rubber and polyester reinforcement to match the demands of accessory drive systems found on vehicles such as the Volkswagen Golf, Volkswagen Passat, and Audi Q3 Quattro. The 6K420AP is cross-referenced to common aftermarket and OE-style numbers, including Gates K060420 and Dayco 5060420, for the same application.

Compatible With 2012-2014 Volkswagen Golf, Alternator and Air Conditioning; 2009-2011 Volkswagen Jetta, Alternator and Air Conditioning; 2004-2006 Nissan Maxima, Alternator and Air Conditioning; 2010-2013 Audi A3; and 2013-2015 Audi Q3 Quattro. Additional listed coverage includes Volkswagen Beetle, Passat, Lupo, CrossFox, SportVan, Polo, Chrysler Concorde, Chrysler Intrepid, Dodge Intrepid, INFINITI QX4, Nissan Pathfinder, BMW M3, Ford Escort, Ford Tempo, Mercury Lynx, and Mercury Topaz in the configurations shown in the fitment data.

What It Helps Address

• Squealing or chirping from a worn accessory drive belt
• Cracking, glazing, or rib wear on the existing serpentine belt
• Loss of alternator drive on listed applications
• Reduced air conditioning compressor drive on listed applications
• Accessory drive noise caused by belt age or tension loss

Installation Notes and Tips

Verify the belt routing, rib count, and measured length against the vehicle’s accessory drive layout before installation. This part is listed for specific positions such as alternator and air conditioning, fan and alternator, and alternator and power steering, so confirm the exact engine accessory configuration on the vehicle. Inspect pulleys, tensioners, and idlers for wear before installing a new belt, since pulley damage can shorten belt life.

For fitment research, this part number is commonly searched for Volkswagen Jetta serpentine belt replacement, Audi A3 accessory drive belt, and Nissan Maxima alternator and air conditioning belt applications.

Quality Assurance

Roadmax markets this belt line as an OE-performance standard replacement option for drivers who want a practical, value-focused part built to the listed specifications. The EPDM belt material and polyester cord construction support consistent service in the applications shown.