Product Description
288880X - FD-1 FAN CLUTCH
PART NUMBER(S):
Fleet Products: 288880X (Remanufactured) | OE: 104770, 104770RX, 104770X, 3912-790008 MACK,
DESCRIPTION:
Model: FD-1 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
• Unique Features: Axial movement clearance, OE Kysor-style design for older thermo-mechanical systems
Applications:
Why choose 288880X? This FD-1 fan clutch is engineered for Class 6–8 trucks running legacy Horton or Kysor-style thermal drive systems. Ideal for maintaining consistent cooling with 7-inch pulleys and 2" fan pilots in space-constrained engine bays.
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
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:
✔ Confirm 2" pilot fitment and 7" pulley clearance before mounting
✔ Verify proper axial alignment and bearing preload during install
✔ Use OE torque spec of 90 ft-lb for locknut when reinstalling
✔ Ensure thermo-spring or viscous mechanism is properly centered and free-moving
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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