KB799798-2X | Drivemaster 2-Speed Fan Clutch (Kenworth/ Peterbilt/ Cummins ISX/X15) F17-1031-002, F17-6017M21

KB799798-2X - HORTON DRIVEMASTER ADVANTAGE TWO-SPEED FAN CLUTCH FOR KENWORTH/PETERBILT CUMMINS ISX, ISX15, AND X15 - REMANUFACTURED

PART NUMBER(S):

Fleet Products: KB799798-2X (Remanufactured) | Replaces OE: Horton: 799798, 799798-2, 79A9798, 79A9798-2, 98A9798, 98A9798-2, 99A9798, 99A9798-2 | PACCAR: F17-1031-002 | Peterbilt: F17-6017M21 | Kit Masters: 99589-2, 995892, KMN20995892 | Alliance: ABPN20995892 | Fleetrite: FLT995892

DESCRIPTION:

Model: Horton DriveMaster Advantage Two-Speed Fan Clutch
Vehicles: Kenworth W900B; Peterbilt 367 HH, 388, and 389 trucks from 2010-2021 with Cummins ISX, ISX15, or X15 engines

• Back Pulley Diameter: 7.28"
• Overall Length: 12.09"
• Belt Configuration: 1 × 12-rib serpentine belt
• First Belt Groove Distance: 6.66"
• Fan Pilot Diameter: 5.00"
• Fan Blade Bolt Circle: 6.00"
• Number of Fan Blade Studs: 6
• Fan Blade Stud Length: 1.05"
• Fan Blade Stud Thread: 5/16"-18
• Vertical Mounting Distance: 5.77"
• Horizontal Mounting Distance: 2.30"
• Journal Bracket Center to Upper-Right Mounting Hole: 1.81"
• Low-Speed Operation: Eddy-current drive
• High-Speed Operation: Spring-actuated engagement

CROSS-REFERENCE(S):

010028673, 704146AT, 704625AT, 79A5798, 79A8201, 98A8201, 99A8201, F171031002, F176017M21, HOR79A9798, KM N20 995892, KMI995892, ABP N20 995892, RC799798, RX79A9798RMAN, RX79A9798RMANRF, ZBH79A9798, 989798, 989798-2, 99798, 99798-2, 999798, 999798-2, FTL799798, FTL799798-2

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 7.28" pulley diameter, 12-rib belt configuration, and 6.66" first-groove position.
✔ Verify the 5.00" fan pilot, 6.00" bolt circle, six-stud pattern, stud dimensions, and mounting distances.
✔ Inspect the fan blades, belt, pulley, mounting bracket, air lines, solenoid, electrical connector, and wiring.
✔ Replace worn mounting hardware and torque all fasteners to Horton or PACCAR specifications.
✔ Verify belt alignment, fan-to-shroud clearance, air-control response, and both low- and high-speed operation.

Drivemaster 2-Speed Repair Kits:

• Minor Seal Repair Kit: 294346
• Major Repair Kit: Q995582

SOLD AS REMANUFACTURED – CORE RETURN REQUIRED
Built to OEM standards — thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.