Description
KB799494-2X – DRIVEMASTER TWO-SPEED FAN CLUTCH MACK ASET AI
PART NUMBER(S):
Fleet Products: KB799494-2X (Remanufactured) | OE: Horton 99A9494-2, 79A9494-2, Kit Masters 99494, MACK 40MH440M, VOLVO 85123189
DESCRIPTION:
Model: Drivemaster Two-Speed Fan Clutch
Vehicles: Mack CV, CV713 (2002–2006, ASET AI engine)
• Back Pulley Diameter: 5.23"
• Pulley Diameter: 5.04"
• Belt Configuration: 12PK
• Belt Groove Count: 6, 10
• Belt 1st Groove Distance: 2.00"
• Fan Pilot Diameter: 2.56"
• Fan Blade Bolt Circle: 3.5"
• Fan Blade Stud Length: 1.05" (0.375-24 thread, 0.81" long)
• Stud Thread Size: 0.312-18 UNC
Applications: Is this fan clutch compatible with your Mack ASET AI engine✔ Yes — designed for heavy-duty cooling under demanding vocational and long-haul conditions. The two-speed drive provides high-output thermal regulation, reduced parasitic load, and consistent torque delivery to extend uptime in critical fleet operations.
CROSS-REFERENCE(S):
20883819, 21192240, 21210845, 21596045, 22113077, 24-465CK, 2S-DP, 2S-DP-CP, 3443-994942, 3443-998494, 3912-79A94942, 40MH4103M, 40MH413AM, 40MH440M, 6514-060-1, 65140601, 799494, 79A5494-2, 79A5644-2, 79A9494, 79A9494-2, 79A9494-2RMAN, 79A9954, 85115602, 85123189, 85139329, 989347, 989473, 989494, 989954, 99347, 994346, 99473, 99494-2, 995550, 999347, 999473, 99954-2, 999542, 999954, 99A9494, 99A9494-2, ABP N20 99494, ABP N20 994942, ABPN2099494, ABPN20994942, D&W 130-184-0410, F17-1000-9494, FC7994942, FLT99494, FLT994942, HOR79A94942, K799494-2, KIT MASTERS 99494, KM N20 99494, KM N20 994942, KMI99494, KMI994942, KMN2099494, KMN20994942, Kit Masters 98A9494, R799494-2, RX79A9494RMAN, RX99A9494RMAN, ZBH79A94942, f17-1000-9494, f1710009494, 799494-2, 79A9494-2, 989494-2, 98A9494-2, 99494-2, 999494-2, 99A9494-2, FTL799494-2, 799494, 79A9494, 989494, 98A9494, 99494, 999494, 99A9494, FTL799494.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:
✔ Verify mounting pattern and fan pilot diameter before installation.
✔ Confirm correct belt configuration (12PK) and pulley diameters (5.04", 5.23") match OE specification.
✔ Ensure two-speed fan clutch system compatibility before installing.
✔ Use proper torque specs and new mounting hardware for best results.
Drivemaster 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
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
