Product Description
KB799748-2X HORTON DRIVEMASTER TWO-SPEED FAN CLUTCH REMAN – FOR INTERNATIONAL / CUMMINS ISX
PART NUMBER(S):
HORTON OEM: 79A9748, 98A9748, 99A9748
KIT MASTERS: 99748
NAVISTAR: 3940575C91
OTHER: 79A9748RMAN, RX79A9748RMANRF, HRT-79A9748-2
DESCRIPTION:
• Sold as Remanufactured – Core Return Required
• Horton-style two-speed fan clutch for International trucks with Cummins ISX engines
• Back Pulley Diameter: 7.28 in
• Overall Length: 11.91 in
• Belt Configuration: 12PK
• Belt Groove Location: 6.66 in
• Bolt Circle: 3.5 in
• Fan Pilot Diameter: 2.56 in
• Fan Blade Stud Length: 0.81 in
• Stud Thread Size: 0.38 in
• Vertical Mounting Distance: 4.49 in
• Horizontal Mounting Distance: 4.56 in
• Fan Center (JB to Top Right Mount Hole): 0.61 in
• Built to match original Horton specs for torque, fitment, and long-term performance
• Kevlar-impregnated friction liners and premium bearing components
• Operates in low-drag eddy-current mode until engine cooling demands high-torque spring engagement
• Reduces fuel consumption and noise while improving engine temperature regulation
CROSS-REFERENCE(S):
3443-997482, 3940575C91, 79A9748, 98A9748, 99748-2, 99A9748, ABP N20 997482, ABPN20997482, FLT997482, KM N20 997482, KMI997482, KMN20997482, RX79A9748RMAN, RX79A9748RMANRF
INSTALLATION NOTES:
✔ Confirm 12PK pulley spec and 7.28 in. pulley diameter
✔ Verify mounting dimensions match Horton/International specs
✔ Torque to OEM values – avoid reusing damaged mounting hardware
✔ Ensure air line connections and fan blade mounting holes are clean and secure
INSTALLATION NOTES:
✔ Confirm 12PK belt configuration and 7.83 in. pulley diameter
✔ Ensure fan pilot and mounting dimensions match OEM spec
✔ Replace worn mounting hardware with new
✔ Compatible with Horton or competitor core returns
✔ Designed for Volvo/Detroit Diesel D13 but also used in Freightliner, Kenworth, Peterbilt, and Ford applications
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, call 1-877-243-0442 or email sales@fleet-products.com and reference Code WEB01.
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
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