Product Description
KB799764-2X – HORTON DRIVEMASTER TWO-SPEED FAN CLUTCH (PETERBILT CUMMINS ISL/ISL-G)
PART NUMBER(S):
Fleet Products: KB799764-2X (Remanufactured) | OE: Peterbilt F17-6017M02, PACCAR F17-6014M05, PACCAR F17-6013M26
DESCRIPTION:
Model: Horton DM Advantage Two-Speed (Remanufactured)
Vehicles: Peterbilt 320, 320 FEPTO, 520 (2010–2025) with Cummins ISL, ISL-G, L9N or PACCAR PX9
• Back Pulley Diameter: 6.65"
• Front Pulley Diameter: 6.54"
• Belt Configuration: 8PK / 6PK dual pulley
• Belt Groove Location: 2.25"
• Fan Pilot Diameter: 5"
• Fan Blade Stud Length: 1.98'' Long
• Stud Thread Size: 5/16-18 Thread
• Bolt Circle: 6"
• Overall Length: 10.2"
• Vertical Mounting Distance: 2.01"
• Horizontal Mounting Distance: 4.41"
• Center of JB to Top Right Mounting Hole: 4.21"
Applications:
Is this fan clutch compatible with your Cummins ISL, ISL-G, L9N, or PACCAR PX9-powered Peterbilt refuse or vocational truck? Yes—engineered for Peterbilt 320, 320 FEPTO, and 520 models from 2010–2025, this Horton DM Advantage dual-pulley two-speed fan clutch restores OEM cooling efficiency for severe-duty fleets with precise engagement, long service life, and drop-in fitment.
CROSS-REFERENCE(S):
10023231, 79A9764, 79A9764RMAN, 98A9764, 997642, 99A9764, F17-6009M05, F17-6009M26, F17-6013M26, F17-6014M05, F17-6017M02, F176009M05, F176009M26, F176013M26, F176014M05, F176017M02, NAVISTARPFC FLT997642, PETERBILT F17-6017M02, HOR79A9764, 79A9764RMAN, 3912-79A9764, HOR 79A9764, P99A9764, HORTON 79A9764, NAVISTAR FLT997642, 3443-997642, ABP N20 997642, ABPN20997642, FLT997642, KM N20 997642, KMI997642, KMN20997642, RX79A9764RMAN, RX79A9764RMANRF, 799764-2, 79A9764-2, 989764-2, 98A9764-2, 99764-2, 999764-2, 99A9764-2, FTL799764-2, 799764, 79A9764, 989764, 98A9764, 99764, 999764, 99A9764, FTL799764
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Confirm dual 8PK/6PK pulley configuration and both pulley diameters before installation
✔ Match vertical/horizontal mount spacing and bolt circle with OEM fan mount
✔ Use new fasteners and gaskets where applicable
✔ Torque mounting bolts to OEM specifications
Drivemaster 2-Speed Repair Kits:
SOLD AS REMANUFACTURED – CORE RETURN REQUIRED
Built to OEM standards — thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
Support & Ordering
For technical support, installation guidance, or to confirm fitment, call 1-877-243-0442 or email sales@fleet-products.com
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