Product Description
KB799066X – HORTON DRIVEMASTER FAN CLUTCH (DETROIT DIESEL SERIES 60)
PART NUMBER(S):
Fleet Products: KB799066X (Remanufactured) | OE: Horton 79A9066, 989066, 999066, Kenworth 99066, Freightliner FLT990662
DESCRIPTION:
Model: Horton Drivemaster DMA2S SE 21 (Remanufactured)
Vehicles: Freightliner FLD, FLH; Kenworth models with Detroit Diesel Series 60 engines (2000–2005)
• Back Pulley Diameter: 6.20″ (157.4 mm)
• Belt Configuration: 3 V-Groove
• Belt Count: 3
• Fan Pilot Diameter: 2.56″
• Fan Blade Bolt Circle: 3.50″
• Fan Blade Studs: 6x, 3/8-24 Thread, 0.81″ Long
• Overall Length: 8.43″
• Bearing: Double row angular contact
• Drive Type: Air-engaged ON/OFF (DMA SE 21)
Applications: Is this fan clutch compatible with your Detroit Diesel Series 60-powered Freightliner or Kenworth? Yes—engineered for DMA2S SE 21 systems, this remanufactured clutch delivers dependable cooling performance, reduced engagement frequency, and OEM fitment for heavy-duty service.
CROSS-REFERENCE(S):
799066, 79A9066, 79A9066-2, 989066, 98A9066, 99066, 99066-2, 999066, 99A9066, KB799066, KB799066X, DMA2S SE 21 REMAN, FC799066, ABPN2099066, ABP N20 99066, FLT99066, FLT990662, KMI99066, 3443-99066, KM N20 990662, KM N20 99066, KMN2099066, KMN20990662
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 fan pilot diameter and pulley configuration before installation.
✔ Ensure correct belt type (3 V-Groove or 10PK) is matched to your engine and pulley setup.
✔ Maintain minimum 90 psi air pressure for proper clutch disengagement.
✔ Inspect friction liner thickness; service if worn near 0.130″ to prevent auto-lock engagement.
Drivemaster On/Off Repair Kits:
- Minor Seal Repair Kit: 294346
- Major Repair Kit: 294351
- Super Repair Kit: 295568, 295575, 299985, Q299999 (Universal)
- Lining Kit: 294349S
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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