Product Description
KB799798-2X – HORTON DRIVEMASTER TWO-SPEED FAN CLUTCH (CUMMINS ISX / X15)
PART NUMBER(S):
Fleet Products: KB799798-2X (Remanufactured) | OE: Horton 79A9798, 98A9798, 99A9798, PACCAR F17-1031-002, Peterbilt F17-6017M21
DESCRIPTION:
Model: Horton DM Advantage Two-Speed (Remanufactured)
Vehicles: Kenworth W900B, Peterbilt 388, 389, 367HH (2010–2021) with Cummins ISX, ISX15, X15 engines
• Back Pulley Diameter: 7.28″
• Overall Length: 12.09″
• Belt Configuration: 12PK
• Belt Groove Location: 6.66″
• Fan Pilot Diameter: 5.00″
• Bolt Circle: 6.00″
• Fan Blade Studs: 6x, 5/16-18 Thread, 1.05″ Long
• Vertical Mounting Distance: 5.77″
• Horizontal Mounting Distance: 2.30″
• Center of JB to Top Right Mounting Hole: 1.81″
Applications:
Direct OEM-style replacement for Kenworth and Peterbilt Class 8 platforms with Cummins ISX/X15. Two-speed (eddy current low / spring-engaged high) design delivers fuel savings, faster warm-up, reduced radiator wear, and maximum cooling under heavy load.
CROSS-REFERENCE(S):
010028673, 704146AT, 704625AT, 799798, 79A5798, 79A8201, 79A9798, 98A8201, 98A9798, 99589-2, 995892, 99A8201, 99A9798, ABP N20 995892, ABPN20995892, F17-1031-002, F17-6017M21, F171031002, F176017M21, FLT995892, HOR79A9798, KM N20 995892, KMI995892, KMN20995892, RC799798, RX79A9798RMAN, RX79A9798RMANRF, ZBH79A9798, 799798-2, 79A9798, 989798-2, 98A9798-2, 99798-2, 999798-2, 99A9798-2, FTL799798-2, 799798, 79A9798, 989798, 98A9798, 99798, 999798, 99A9798, FTL799798
A cross-reference listing means this part should be a suitable replacement for the part numbers listed. Please confirm all dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Confirm 12PK belt configuration and 7.28″ pulley diameter
✔ Match fan pilot, bolt circle, and mount dimensions to OEM spec
✔ Use new hardware and gaskets during installation
✔ Verify two-speed control system is functional before operation
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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