Product Description
KB799782-2X - DRIVEMASTER TWO-SPEED FAN CLUTCH (CUMMINS ISX15)
PART NUMBER(S):
Fleet Products: KB799782-2X (Remanufactured) | OE: 79A9782, 98A9782, 99A9782
DESCRIPTION:
Model: Drivemaster Two-Speed Fan Clutch
Vehicles: Kenworth / Peterbilt (T660, T800, T800W, T680, T880, 387, 386, 579, 587)
Engines: Cummins ISX, ISX15, X15
• Fan Drive Ratio: 1.3:1
• Fan Pilot Diameter: 5.00″ (127 mm)
• Bolt Circle Diameter: 6.00″ (152.4 mm)
• Back Pulley Diameter: 7.24″ (183.9 mm)
• Vertical Mounting Distance: 2.21″ (56.1 mm)
• Horizontal Mounting Distance: 6.36″ (161.5 mm)
• Overall Length: 12.09″ (307.5 mm)
• Fan Blade Stud Length: 1.05″ (26.7 mm)
• Belt Configuration: 12PK
• Belt Groove Location: 6.66″ (169.2 mm)
• Minimum Air Pressure Required: 90 psi (620.5 kPa)
• Drive Type: Two-speed (eddy-current + spring-engaged)
Applications:
Designed for Kenworth and Peterbilt heavy-duty trucks equipped with Cummins ISX15. Ideal for vocational, fire, and highway applications requiring 11-blade fan cooling performance with OEM-level remanufactured reliability.
CROSS-REFERENCE(S):
T660, T800W, 3443-997822, 704146AT, F17-6014M22, 79A5782, 79A8200, 79A8202, 79A9586, 79A9659, 79A9782, 79A9802, 98A8200, 98A9586, 98A9659, 98A9782, 9910148, 99586-2, 995862, 996762502, 996762502-001, 996813502, 996813502-002, 996813502-003, 99782-2, 997822, 998613502-002, 99A8200, 99A9586, 99A9659, 99A9782, 99A9852, ABP N20 997822, ABPN20997822, F17-1031-001, F17-6009M22, F17-6014M22, F17-6017M03, F171031001, F176009M22, F176014M22, F176017M03, FC799782, FLT-998502, FLT-T800B, FLT997822, KM N20 997822, KMI997822, KMN20997822, ROSENBAUER-996813502, RX79A9782RMAN, RX79A9782RMANRF, RX99782-2KM, RX997822KM
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:
✔ Always verify fan blade bolt pattern, mounting clearance, and pulley alignment before installation
✔ For modulator applications, cross-check with Horton part #9910148
✔ Fan clutch engagement should be confirmed after install under full engine temperature
✔ Confirm two-speed fan clutch compatibility prior to installation
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.
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, call 1-877-243-0442 or email sales@fleet-products.com.
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