Product Description
KB798600X – HORTON DRIVEMASTER FAN CLUTCH (CUMMINS ISM)
PART NUMBER(S):
Fleet Products: KB798600X (Remanufactured) | OE: Horton 79A8600, Kit Masters 98600, PACCAR F17-6011-6080
DESCRIPTION:
Model: Horton DM Advantage On/Off (Drivemaster) Fan Clutch (Remanufactured)
Vehicles: Kenworth T660, T800B, T800SH, W900S; Peterbilt 365, 365 SBFA, 365 SFFA, 384 (2008–2010) with Cummins ISM engines
• Engagement Type: Air-engaged, on/off
• Pulley Diameter: 7.51″
• Fan Pilot Diameter: 2.56″
• Fan Blade Bolt Circle: 3.5″
• Fan Blade Stud Pattern: 6x, 3/8-24 Thread, 1.07″ Long
• Belt Type: 8PK (Single Belt, Serpentine)
• High torque performance for heavy-duty Class 8 cooling applications
Applications: Is this fan clutch compatible with your Cummins ISM-powered Kenworth or Peterbilt✔ Yes—designed for models from 2008–2010, this Horton Drivemaster delivers OEM-grade engagement response, high torque transfer, and reliable cooling in demanding fleet operations.
CROSS-REFERENCE(S):
79A8600, 79A8600-2, 79A4600, 98600, 986002, 988600, 989709, 989839, 98A8600, 98A9709, 99A8600, 99A86002, 99A9709, 998600, 999709, 999839, 1000-798600, 1000798600, 3443-98600, 3443-986002, 3443-98600, 3912-79A8600, 3912-99A8600, ABP N20 98600, ABP N20 986002, ABPN2098600, ABPN20986002, FC798600, FLT98600, FLT986002, F17-6005-6082, F17-6011-6080, F17-1008-5020, F1760056082, F1760116080, F1710085020, HOR 79A8600, HOR 99A8600, HOR79A8600, HOR79A8600-2, HOR99A8600, K5 98600, K598600, KMI98600, KMI986002, KM N20 98600, KM N20 986002, KMN2098600, KMN20986002, K798600, P99A8600, R798600, RX79A8600RMAN, RX79A8600RMANRF, RX79A8600-2RMAN, RX79A8600-2RMANRF, RX79A86002RMAN, RX79A86002RMANRF, ZBH99A8600
A cross-reference listing means this part is a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Ensure air line routing matches original factory configuration before engagement
✔ Verify fan blade clearance and torque specs prior to installation
✔ Torque fan clutch bolts to OEM specifications to prevent imbalance and vibration
✔ Always install with compatible seal or repair kits to maintain proper operation
Drivemaster On/Off 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 | Email: sales@fleet-products.com
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