Description
104770X - FD-3 FAN CLUTCH
PART NUMBER(S):
Fleet Products: 104770X (Remanufactured) | OE: 104770, 104770RX, 104770X
DESCRIPTION:
Model: FD-3 Fan Clutch
Vehicles: Ford, Mack, Sterling, Autocar, Freightliner (Class 6–8 applications)
• Back Pulley Diameter: 7 inches
• Overall Length: ~5 inches
• Belt Configuration: Single serpentine
• Belt Groove Location: Centered on pulley
• Bolt Circle Diameter: ~3.5 inches (89mm)
• Fan Pilot Diameter: 2.0 inches
• Fan Blade Stud Length: 0.6 – 0.75 inches
• Stud Thread Size: 3/8" - 24 UN
• Vertical Mounting Distance: ~2.2 inches
• Horizontal Mounting Distance: ~6.3 inches
• Drive Type: Spring-engaged
• Performance Requirements: Max torque ~22 lb-ft
Applications:
What’s this used for✔ The FD-3 fan clutch (104770X) supports cooling on legacy Class 6–8 trucks using a 7" pulley and 2" pilot. It’s trusted in reman setups for Mack, Autocar, and Ford medium/heavy-duty cooling systems.
CROSS-REFERENCE(S):
104770, 104770RX, 104770X, 104921, 104921RX, 104921X, 288880, ABP N20 104770X, ABPN2090008, FLT104770X, E9HZ-8A616-E, 104750, 104750X, 104751, 102621, 103977, 103990, 104098, 104143, 104312, 104314, 185080, 187972, 187973, 20044A, 20060A, 210681, 21822, 22056, 22722, 22728, 22736, 22809, 22829, 22922, 22939, 23070, 23071, 23947, 23948, 24186, 24187, 25363, 25464, 26342, 26889, 3912790008, 50047, 50048, 50049, 50050, 50058, 50059, 50061, 50064, 50065, 50070, 50071, 590000, 590008, 790008, 790008HO, 809815, 90008, 980091, 990019, 990153, AR9947, BBH104750, FC212098, FLT104750GTN, FLT104751GTN, FLT104770GTN, HOR790008, RF590008X, RF790008X, ZBH790008, 104770x, 104921, 104770rx, E9HZ8A616E, E9HZ-8A616-E, 104921x, 104921rx, 288880, 104770, KMN20104770X, KM N20 104770X, ABPN20104770X, ABP N20 104770X, FLT104770X, KMI104770X, 3443-104770X,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 fan clutch locknut to 90 ft-lb and do not loosen after torquing—tighten only to align tab
✔ Bearing install force must not exceed 1100 lbs during reassembly
✔ Use OE fan spacers if originally equipped to preserve fan depth
✔ Confirm axial spring and anti-rotation pin alignment during install
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
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Warranty Information
