Description
KB798601X HORTON DRIVEMASTER FAN CLUTCH (REMAN)
PART NUMBER(S):
Fleet Products: KB798601X (Remanufactured) | OE: Horton 79A8601, 99A8601, 998601
DESCRIPTION:
Model: Horton Drivemaster (DMA On/Off) - 12PK Belt
Vehicles: Kenworth and Peterbilt with Cummins ISX engines (2008-2009 applications)
• Fan Pilot: 2.56 in
• Fan Blade Bolt Circle: 3.50 in
• Bolt Pattern: 6 - 3/8-24 UNF studs, 1.07 in stud length
• Pulley/Sheave Diameter: 7.27 in (back pulley)
• Belt Configuration: 12PK, single-belt drive
• Face-to-Belt Groove Length: 6.66 in
• Mounting Distances: 1.81 in (vertical), 6.36 in (horizontal)
• Operation: On/Off clutch profile optimized for high-heat, high-load duty
Applications:
Is this fan clutch compatible with your Cummins ISX-powered Kenworth or Peterbilt? Yes, this Drivemaster replacement is engineered as a drop-in for ISX applications, delivering stable engagement, strong airflow, and reliable cooling under heavy load. Ideal for line-haul and vocational fleets targeting OE-level fitment and uptime.
CROSS-REFERENCE(S):
79A8601, F1760055132, F17-6005-5132, 99A8601, 989835, 998601, F1760115130, F17-6011-5130, 98A8601, 999835, F1760115132, F17-6011-5132, 98601, F1760055022, F17-6005-5022, 988601, KMN2098601, KM N20 98601, ABPN2098601, ABP N20 98601, FLT98601, RX79A8601RMANRF, RX79A8601RMAN, RX79A8601RMAN, KMI98601, 3443-98601, 1000-798601, 1000798601, 798601, 79A4601, P99A8601, R798601, FLT986012, NAVISTAR FLT986012, RC798601, ZBH79A8601, ZBH99A8601, HOR79A8601, SKF 99601, K798601, 3912-79A8601
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all pilots, bolt patterns, and belt configuration match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Verify Cummins ISX application, fan pilot (2.56 in), and 3.50 in bolt circle before install
✔ Torque fan blade hardware and pulley fasteners to OE specifications; use threadlocker where specified
✔ Inspect belt condition/tension (12PK) and align sheave; set tension per OEM procedure after install
✔ Confirm clutch air/electrical control per truck build; perform engage/disengage test at operating temp
Drivemaster On/Off Repair Kits:
- Minor Seal Repair Kit: 294346
- Major Repair Kit: 294351
- Super Repair Kit: 295568, 295575, 299985, Q299999 (Universal)
- Lining Kit: 294349
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
- Fast, Reliable Shipping Across North America
- Competitive pricing with Core Return Refunds
- Price Match Guarantee | Find a better price? We'll beat the difference by 10%!
Warranty Information
