Product Description
KB799748-2X – DRIVEMASTER TWO-SPEED FAN CLUTCH CUMMINS ISX (INTERNATIONAL)
PART NUMBER(S):
Fleet Products: KB799748-2X (Remanufactured) | OE: International 3940575C91, 3940575C92, Horton 98A9748, 99A9748
DESCRIPTION:
Model: Horton DriveMaster Two-Speed Fan Clutch (Remanufactured)
Vehicles: International LoneStar, Global LoneStar (2007–2023) with Cummins ISX, ISX15, and X15 engines
• Back Pulley Diameter: 7.28"
• Overall Length: 11.91"
• Belt Configuration: 12PK
• Belt Groove Location: 6.66"
• Bolt Circle: 3.5"
• Fan Pilot Diameter: 2.56"
• Fan Blade Stud Length: 0.81" (0.38" thread)
• Vertical Mounting Distance: 4.49"
• Horizontal Mounting Distance: 4.56"
• Center of JB to Top Right Mounting Hole: 0.61"
• Drive Mode: Two-speed (eddy current low speed, spring-actuated high speed)
• Construction: Kevlar-impregnated friction liners and premium bearings
Applications:
Purpose-built for International Class 8 trucks powered by Cummins ISX family engines, this two-speed fan clutch offers optimized cooling under high load, reduced idle drag, fuel efficiency gains, and faster engine warm-up. Suitable for long-haul, regional, and heavy vocational duty cycles.
CROSS-REFERENCE(S):
3443-997482, 3940575C91, 3940575C92, 79A9748, 98A9748, 99748-2, 997482, 99A9748, ABP N20 997482, ABPN20997482, FLT997482, HOR79A9748, HOR99A9748, KM N20 997482, KMI997482, KMN20997482, RX79A9748RMAN, RX79A9748RMANRF, ZBH79A9748, ZBH99A9748, 10022384, 10023704, 3814702C91, 3912-79A9748, 3912-99A9748, 799748-2, 79A9748-2, 989748-2, 98A9748-2, 99748-2, 999748-2, 99A9748-2, FTL799748-2, 799748, 79A9748, 989748, 98A9748, 99748, 999748, 99A9748, FTL799748.
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 12PK belt configuration and 7.28" pulley diameter match OEM specification
✔ Verify fan pilot diameter and mounting dimensions before installation
✔ Replace worn mounting hardware to ensure secure fitment
✔ Compatible with Horton and competitor core returns
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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