Roadmax 6K878AP Serpentine Belt - Accessory Drive or Alternator

Roadmax 6K878AP Serpentine Belt Overview

The Roadmax 6K878AP is a standard automotive V-ribbed serpentine belt built with EPDM rubber and polyester cord reinforcement for everyday accessory drive service. It is a practical choice for drivers who want dependable belt replacement performance without stepping up to a premium-duty belt.

Compatible with a wide range of applications, including Ford Ranger, Chevrolet Silverado 1500, and Toyota Tundra fitments, this belt is sized for accessory drive systems that require a 6-rib, K-section belt with an effective length of 2231 mm.

Key Features

• Part number: 6K878AP
• Brand line: Roadmax Automotive V-Ribbed Belt (Standard)
• EPDM construction for common accessory drive belt service
• Polyester cord material for belt stability
• 6-rib, K-section design
• Effective length: 2231 mm (87.82 in.)
• Outside circumference: 2245 mm (88.387 in.)
• Top width: 20 mm (.807 in.)

Product Details

Roadmax positions this standard V-ribbed belt as a value-focused replacement for customers who need quality construction for routine maintenance. The EPDM belt material is commonly used in modern serpentine belt applications, while the polyester cord helps maintain belt shape and tension under normal accessory drive loads. If you are replacing a worn serpentine belt on a Ford Ranger, Chevrolet Silverado 1500, GMC Sierra 1500, or Toyota Tundra, the 6K878AP provides the dimensional profile needed for the listed applications.

This part cross-references Gates K060878 and Dayco 5060878 for the same application.

What This Belt Helps Address

• Squealing or chirping from a worn serpentine belt
• Cracking, glazing, or rib wear on the accessory drive belt
• Loss of belt grip on alternator and accessory pulleys
• Routine replacement during belt service intervals
• Fitment needs for vehicles requiring a 6-rib, 2231 mm effective-length belt

Installation Notes and Tips

Verify belt routing, rib count, and measured length against the vehicle application before installation. For listed Chevrolet Silverado 1500 and GMC Sierra 1500 applications, tensioner replacement is recommended. On 2008-2009 Volkswagen Pointer alternator applications and other fitments with configuration notes, confirm the accessory drive layout and options such as air conditioning or dual alternators before ordering. Inspect pulleys, idlers, and the tensioner for wear so the new belt tracks correctly.

• Fits 2021-2023 Ford E-350 Super Duty, Accessory Drive, W/Dual Alts.
• Fits 2008-2013 Chevrolet Silverado 1500, N/A, W/O A.C.; Tensioner Replacement is Recommended.
• Fits 2008-2013 GMC Sierra 1500, N/A, W/O A.C.; Tensioner Replacement is Recommended.
• Fits 2009-2010 Chevrolet Express 1500, N/A, W/O A.C.; W/145A. Alt.; Tensioner Replacement is Recommended.
• Fits 2009-2010 GMC Savana 1500, N/A, W/O A.C.; W/145A. Alt.; Tensioner Replacement is Recommended.
• Fits 2007-2008 Ford Ranger, N/A, W/A.C.
• Fits 1997-2000 Ford Ranger, N/A, W/A.C.
• Fits 2007-2008 Mazda B3000, N/A, W/A.C.
• Fits 1997-2000 Mazda B4000, N/A, W/A.C.
• Fits 2007-2009 Toyota Tundra, N/A.
• Fits 2009 Toyota Sequoia, N/A.
• Fits 2006-2010 Lexus SC430, N/A.
• Fits 1995-2000 Lexus LS400, N/A.
• Fits 1995-1997 Saab 9000, N/A.
• Fits 1986-1988 Ford Thunderbird, N/A, W/O A.C.

Quality Assurance

Roadmax markets this belt as a standard replacement option for budget-conscious buyers who still want a quality accessory drive component. The EPDM construction and reinforced cord design support consistent service in the applications listed above.