Product Description
106866X - FD-3 DETROIT FAN CLUTCH
PART NUMBER(S):
Fleet Products: 106866X (Remanufactured) | OE: 106866, 106866RX, 106866
DESCRIPTION:
Model: FD-3 Detroit Fan Clutch
Vehicles: Detroit-powered long-haul and vocational trucks
• Fan Pilot Diameter: 2 inches
• Back Pulley Diameter: 7.25" and 9.12" options
• Bolt Circle Diameter: ~3.5 inches
• Belt Configuration: Dual serpentine
• Belt Groove Location: Centered
• Fan Blade Stud Length: 0.75 – 1 inch
• Stud Thread Size: 3/8" - 24 UN
• Vertical Mounting Distance: ~2.2 inches
• Horizontal Mounting Distance: ~6.3 inches
• Drive Type: Spring engaged (pneumatic on/off)
• Unique Features: Kevlar®-impregnated lining, upgraded angular contact bearings
Applications: Used on heavy-duty trucks requiring FD-3 style clutches. Suited for Detroit engine cooling systems with either 7.25" or 9.12" pulley configurations.
CROSS-REFERENCE(S):
106866, 106866RX, 106866X, KMN20106866X, KM N20 106866X, ABPN20106866X, ABP N20 106866X, FLT106866X, KMI106866X, 3443-106866X
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:
✔ Torque locknut to 90 foot-pounds (101 N·m) as per FD-3 specifications
✔ Lock washer tab must align precisely before torque application
✔ Install cotter pin and dust cap after assembly is secured
✔ Follow OEM fan belt tensioning and spacer setup specs
✔ Perform operational and leak testing before mounting on engine
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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