Description
KB799782-2X - HORTON DRIVEMASTER TWO-SPEED FAN CLUTCH FOR KENWORTH/PETERBILT CUMMINS ISX, ISX15, AND X15 - REMANUFACTURED
PART NUMBER(S):
Fleet Products: KB799782-2X (Remanufactured) | Replaces OE: Horton: 79A9782, 98A9782, 99A9782 | PACCAR: F17-1031-001
DESCRIPTION:
Model: Horton DriveMaster Two-Speed Fan Clutch
Vehicles: Kenworth T660, T680, T800, T800W, and T880; Peterbilt 386, 387, 579, and 587 trucks from 2010-2025
Engines: Cummins ISX, ISX15, and X15
• Fan Drive Ratio: 1.3:1
• Back Pulley Diameter: 7.24" (183.9 mm)
• Overall Length: 12.09" (307.5 mm)
• Belt Configuration: 1 × 12-rib serpentine belt
• First Belt Groove Distance: 6.66" (169.2 mm)
• Fan Blade Bolt Circle: 6.00" (152.4 mm)
• Fan Pilot Diameter: 5.00" (127 mm)
• Fan Blade Stud Length: 1.05" (26.7 mm)
• Vertical Mounting Distance: 2.21" (56.1 mm)
• Horizontal Mounting Distance: 6.36" (161.5 mm)
• Minimum Air Pressure: 90 PSI (620.5 kPa)
• Low-Speed Operation: Eddy-current drive
• High-Speed Operation: Spring-actuated engagement
CROSS-REFERENCE(S):
3443-997822, 704146AT, F17-6014M22, 79A5782, 79A8200, 79A8202, 79A9586, 79A9659, 79A9802, 98A8200, 98A9586, 98A9659, 9910148, 99586-2, 995862, 996762502, 996762502-001, 996813502, 996813502-002, 996813502-003, 99782-2, 997822, 998613502-002, 99A8200, 99A9586, 99A9659, 99A9852, ABP N20 997822, ABPN20997822, F17-6009M22, F17-6017M03, F171031001, F176009M22, F176014M22, F176017M03, FC799782, FLT-998502, FLT-T800B, FLT997822, KM N20 997822, KMI997822, KMN20997822, ROSENBAUER-996813502, RX79A9782RMAN, RX79A9782RMANRF, RX99782-2KM, RX997822KM, F51-6008M04, F51-6008M06, 799782-2, 79A9782-2, 989782-2, 98A9782-2, 999782-2, 99A9782-2, FTL799782-2, 799782, 989782, 99782, 999782, FTL799782
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Confirm the 7.24" pulley diameter, 12-rib belt configuration, and 6.66" first-groove position.
✔ Verify the 5.00" fan pilot, 6.00" bolt circle, fan stud length, and mounting distances against the removed clutch.
✔ Confirm a minimum of 90 PSI is available at the fan-clutch air line during engagement testing.
✔ Inspect the fan blades, belt, pulley, mounting bracket, air lines, solenoid, electrical connections, and wiring.
✔ Verify pulley alignment, fan-to-shroud clearance, air-control response, and both low- and high-speed operation.
DM 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.
Warranty Information
