Roadmax 6K1187AP Serpentine Belt
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Roadmax
 Automotive V-Ribbed Belt (Standard)

Roadmax 6K1187AP Serpentine Belt

Brand Roadmax 6K1187AP
Position Fan, Alternator, Power Steering and Air Conditioning and Fan
Material Epdm
Top Width .807
Top Width 20
Cord Material Polyester
Cross Section Designation K
Effective Length 118.74
Effective Length 3016
Outside Circumference 119.31
Outside Circumference 3030
Type Automotive v-ribbed belt (standard)
Rib Quantity 6
Product line Automotive V-Ribbed Belt (Standard)
Fits Chevrolet, GMC, and Hummer · 83 vehicles

EPDM construction. Resists wear for dependable accessory drive performance.

Polyester cord reinforcement. Adds strength and helps maintain belt stability.

Standard V-ribbed belt. A practical serpentine belt for everyday replacement needs.

Cross-references Continental 4061187, Dayco 5061185 and Dayco 5061188 for the same application. See all 29.

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Roadmax 6K1187AP Serpentine Belt Overview

The Roadmax 6K1187AP is an automotive V-ribbed belt built for accessory drive systems that need dependable everyday operation without the added cost of a premium belt. Made with EPDM and polyester cord reinforcement, it is sized for the specified 6-rib applications and supports consistent belt drive performance in compatible Chevrolet, GMC, and Hummer trucks and vans.

Roadmax positions this Automotive V-Ribbed Belt (Standard) line for budget-conscious buyers who still want a quality replacement. The 6K1187AP part number is a direct reference for shoppers comparing OE-style serpentine belt options for heavy-duty and fleet-use vehicles.

Key Features

  • EPDM construction for durable accessory drive belt service
  • Polyester cord material for reinforced belt stability
  • 6-rib, K cross-section design
  • Top width: 0.807 in. / 20 mm
  • Effective length: 118.74 in. / 3016 mm
  • Outside circumference: 119.31 in. / 3030 mm
  • Standard automotive V-ribbed belt design

Product Details

This serpentine belt is part of Roadmax’s Automotive V-Ribbed Belt (Standard) line, which focuses on practical replacement value for drivers who need a reliable belt for routine service. The 6K1187AP is sized for accessory drive systems used on Chevrolet Silverado 2500 HD, Chevrolet Silverado 3500 HD, GMC Sierra 2500 HD, GMC Sierra 3500 HD, Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, GMC Savana 3500, and Hummer H1 applications listed in the fitment data. It also cross-references Gates K061187 and Continental 4061187 for the same application.

Fits 2015-2016 Chevrolet Silverado 2500 HD, N/A; Fits 2015-2016 Chevrolet Silverado 3500 HD, N/A; Fits 2015-2016 GMC Sierra 2500 HD, N/A; Fits 2015-2016 GMC Sierra 3500 HD, N/A; Fits 2011-2014 Chevrolet Silverado 2500 HD, N/A; Fits 2011-2014 Chevrolet Silverado 3500 HD, N/A; Fits 2011-2014 GMC Sierra 2500 HD, N/A; Fits 2011-2014 GMC Sierra 3500 HD, N/A; Fits 2006-2010 Chevrolet Express 2500, N/A; Fits 2006-2010 Chevrolet Express 3500, N/A; Fits 2006-2010 GMC Savana 2500, N/A; Fits 2006-2010 GMC Savana 3500, N/A; Fits 2006 Hummer H1, N/A; Fits 2002-2005 Chevrolet Silverado 2500 HD, N/A; Fits 2002-2005 Chevrolet Silverado 3500, N/A; Fits 2002-2005 GMC Sierra 2500 HD, N/A; Fits 2002-2005 GMC Sierra 3500, N/A.

Common Uses

  • Restores proper drive belt operation after cracking, glazing, or wear
  • Addresses squealing from a worn or slipping serpentine belt
  • Supports charging, cooling, and accessory drive function in belt-driven systems
  • Replaces a belt that no longer matches the required length or rib profile
  • Helps correct belt-related drivability issues in high-mileage service vehicles

Installation Notes and Tips

Verify the belt routing, rib count, and measured length against the vehicle’s accessory drive layout before installation. Confirm whether the application uses a single alternator or 150A alternator configuration, as noted in the fitment data for specific Silverado, Sierra, Express, and Savana models. Inspect pulleys, tensioners, and idlers for wear before installing the new belt to help maintain proper tracking and belt life.

Quality Assurance

Roadmax markets this standard V-ribbed belt as a value-focused replacement option for customers who want quality without stepping up to a premium belt line. The EPDM belt construction and reinforced cord design support consistent service in the listed applications.

Related reading

This part fits 83 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2016ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2016ChevroletSilverado 3500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2016GMCSierra 2500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2016GMCSierra 3500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2015ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2015ChevroletSilverado 3500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2015GMCSierra 2500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2015GMCSierra 3500 HD6.6LV8DIESELN/AW/150A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2014ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2014ChevroletSilverado 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2014GMCSierra 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2014GMCSierra 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2013ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2013ChevroletSilverado 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2013GMCSierra 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2013GMCSierra 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2012ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2012ChevroletSilverado 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2012GMCSierra 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2012GMCSierra 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2011ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2011ChevroletSilverado 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2011GMCSierra 2500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2011GMCSierra 3500 HD6.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2010ChevroletExpress 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2010ChevroletExpress 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2010GMCSavana 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2010GMCSavana 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2010GMCSavana 45006.6LV8DIESELFanW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2009ChevroletExpress 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2009ChevroletExpress 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2009GMCSavana 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2009GMCSavana 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2009GMCSavana 45006.6LV8DIESELFanW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2008ChevroletExpress 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2008ChevroletExpress 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2008GMCSavana 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2008GMCSavana 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007ChevroletC4500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007ChevroletC5500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007ChevroletExpress 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007ChevroletExpress 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007GMCC4500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007GMCC5500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007GMCSavana 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2007GMCSavana 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006ChevroletC4500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006ChevroletC5500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006ChevroletExpress 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006ChevroletExpress 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006GMCC4500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006GMCC5500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006GMCSavana 25006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006GMCSavana 35006.6LV8DIESELN/AW/Single Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2006HummerH16.6LV8DIESELN/AAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005ChevroletC4500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005ChevroletC5500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005ChevroletSilverado 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005GMCC4500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005GMCC5500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005GMCSierra 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2005GMCSierra 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004ChevroletC4500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004ChevroletC5500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004ChevroletSilverado 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004GMCC4500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004GMCC5500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004GMCSierra 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2004GMCSierra 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003ChevroletC4500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003ChevroletC5500 Kodiak6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003ChevroletSilverado 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003GMCC4500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003GMCC5500 Topkick6.6LV8DIESELFan, Alternator, Power Steering and Air ConditioningW/105A. Alt.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003GMCSierra 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2003GMCSierra 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2002ChevroletSilverado 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2002ChevroletSilverado 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2002GMCSierra 2500 HD6.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2002GMCSierra 35006.6LV8DIESELN/AW/105A. Alt.; W/V.P.; Available Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
Directly replaces or cross-references 29 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Continental — 4061187Dayco — 5061185Dayco — 5061188Drive Rite — 5061185DRGates — K061187Gates — K061187HDMileage Maker — 1187K6MK6K11876K30126PK30126PK30156PK302025-06118725-061187HD1182K6MK1185K61187K674211410611874061182601770212627525126424331264637697300654980356308973006541PK061186QJK61192