Gates K100604HD FleetRunner HD Micro-V Serpentine Belt 10-Rib 60.43" Mack Volvo

Vehicle Fitment

• 2008-2014, 2016-2017 Mack CXU Series (L6 10.8L Diesel) - Fan and Water Pump Drive
• 2007-2017 Volvo VNL (L6 10.8L Diesel) - Fan and Water Pump Drive
• 2007-2017 Volvo VNL 300 / VNL 400 / VNL 740 / VNL 760 / VNL 860 (L6 10.8L Diesel) - Fan and Water Pump Drive
• 2007-2017 Volvo VNM (L6 10.8L Diesel) - Fan and Water Pump Drive

Fitment Notes

• This belt serves the Fan and Water Pump drive position on D11 (10.8L) engine-equipped Mack CXU and Volvo VNL/VNM applications - always confirm belt position before ordering as these platforms run multiple belts
• Not the alternator/A/C belt - confirm via existing belt part number or belt position before ordering
• Cross-references: Dayco 5100604, Mack 88GB456P604, Volvo 20883502 / 20883508 / 85550390, Continental/GoodyearT 4100603 / 4100603X, NAPA 25-100604HD, Volvo 5000681374
• Tensioner replacement is strongly recommended whenever the serpentine belt is replaced in heavy-duty truck applications
• Sold individually

Features

• Gates FleetRunner patented EPDM construction with distinctive green overcord - purpose-built for heavy-duty commercial truck fan and water pump drive systems
• Delivers peak performance at prolonged extreme operating temperatures under sustained high-idle and high-mileage commercial duty cycles
• Unique undercord notch pattern provides increased flexibility for small-diameter pulleys and backside idler configurations
• Heavy-duty construction resists cracking, wear, ozone, and water-based coolant exposure significantly better than standard Micro-V belts
• Unique form grinding of each individual belt assures precise dimensional control for consistent fit and performance
• Lowest cost-per-mile belt solution for Class 8 fleets - consistently outperforms other heavy-duty serpentine belts

Specifications

• Belt Series: FleetRunner Micro-V (Heavy Duty)
• Rib Count: 10
• Effective Length: 60.43 inches (1,535mm)
• Outside Circumference: 61.125 inches
• Top Width: 1.367 inches (35mm)
• Belt Type: K-Section Micro-V Serpentine
• Material: Patented EPDM; Green overcord; Polyester cord
• OEM Cross-References: Mack 88GB456P604, Volvo 20883502 / 20883508 / 85550390 / 5000681374

Included Components

• 1x Gates FleetRunner K100604HD Micro-V Serpentine Belt

Product Description

The Gates K100604HD is a FleetRunner Heavy Duty Micro-V serpentine belt designed for the fan and water pump drive position on Mack CXU (2008-2017) and Volvo VNL/VNM (2007-2017) Class 8 trucks equipped with the 10.8L D11 diesel engine. With 10 ribs and an effective length of 60.43 inches, this belt is engineered for the sustained thermal and mechanical stress of long-haul commercial truck operation - duty cycles that demand far more of a drive belt than standard passenger or light truck applications.

Built with Gates' patented EPDM compound and the distinctive green overcord that identifies the FleetRunner HD line, the K100604HD cross-references to Mack 88GB456P604, Volvo 20883502, 20883508, and 85550390, as well as Dayco 5100604 and Continental 4100603. On Mack CXU and Volvo VNL/VNM platforms that run multiple belts, always confirm the correct belt position (fan/water pump vs. alternator/A/C) by referencing the OEM belt part number or belt routing diagram before ordering. Gates recommends replacing the tensioner at the same time to extend belt service life and minimize fleet downtime.