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KB799798-2X Horton Drivemaster two-speed fan clutch remanufactured for Cummins ISX/X15 in Kenworth and Peterbilt trucks, OEM fit. 79A9798, 98A9798, 99A9798, PACCAR F17-1031-002, Peterbilt F17-6017M21
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KB799798-2X | Drivemaster 2-speed Fan Clutch (Kenworth/Peterbilt/Cummins ISX/X15)

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SKU:
KB799798-2X
Condition:
Certified Remanufactured
Availability:
In stock, call to order 877-243-0442 (toll-free)
Core Part No.:
799798-2C
Refundable Core Deposit:
C$1040 / US$720

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:

  • Minor Seal Repair Kit: 294346
  • Major Repair Kit: Q995582

    • SOLD AS REMANUFACTURED – CORE RETURN REQUIRED
    Built to OEM standards — thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.

    WHY CHOOSE Fleet Products | KBR - Heavy Duty Truck & Trailer PARTS?

    • Canadian-owned since 1985
    • Trusted by fleets, mechanics, and B2B partners across North America
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    • Competitive pricing with Core Return Refunds
    • Price Match Guarantee – Find a better price? We’ll beat the difference by 10%!

    Warranty Information

    We provide a warranty on all new and remanufactured parts for 12 months, 160,000 km (100,000 miles), or 3,600 hours - whichever comes first, with off-highway components covered for 90 days. Defective products must be returned within 30 days of discovery for inspection. The warranty covers repair or replacement of defective parts and excludes issues caused by improper installation, maintenance, or service. Visit our website’s Warranty section for complete details and claim instructions.

    Reviews

    1 Review

    • 5
      Solid Horton clutch

      Posted by Chris Delaney on 14th Nov 2025

      2015 Pete, after the old clutch started slipping on long pulls. Been running it a few weeks through mixed loads and it has kept the truck cool without any surprises. Good quality reman and a direct fit for MX13 and ISX trucks running with Horton.

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