Description
KB791091X – HT/S ADVANTAGE FAN CLUTCH (Detroit Diesel Series 50/60 Applications)
PART NUMBER(S):
Fleet Products: KB791091X (Remanufactured) KB791011X | OE: 791091, 91091 | Detroit: 20822-3525
DESCRIPTION:
Model: HT/S Advantage On/Off Pneumatic Fan Clutch
Vehicles: Freightliner, Kenworth, Peterbilt, Volvo, Western Star, Sterling – Detroit Diesel Series 50/60
• Friction Plate: 9.5"
• Fan Pilot Diameter: 2.00"
• Front Pulley Diameter: 6.20"
• Back Pulley Diameter: 9.06"
• Belt Groove: 3V serpentine style
• Mounting: 6-bolt pattern, 3/8-16 stud thread size
• Drive Type: Pneumatic on/off air engaged
• Bearing Design: Spring-loaded, fine spline with upgraded cartridge
Applications: Is this fan clutch compatible with your Detroit Diesel-powered heavy-duty vehicle✔ Yes—engineered for Series 50 and Series 60 applications in Freightliner, Kenworth, Peterbilt, Volvo, Sterling, and Western Star, this HT/S Advantage delivers OEM cooling performance with drop-in fitment and long-life reliability.
CROSS-REFERENCE(S):
20822-3525, 208223525, 3912-791091, 3912791091, 791091, 791091-HO, 791091HO, 91091, ABP N20 91091, ABPN2091091, HOR 791091, HOR791091, RF791091X, ZBH791091, 591011, 791011, 980020, 981037, 981070, 981101, 981127, 981209, 981230, 981298, 991051, 991110, 991133, 991212, 991223, 0511369032, 05-11369-032, 0511369044, 05-11369-044, 981368, 987073, 991378, 997083, 990086, KMN2091011, KM N20 91011, ABPN2091011, ABP N20 91011, FLT91011, KMI91011, 3443-91011, KB791091X, 591011, 791011, 980020, 981037, 981070, 981101, 981127, 981209, 981230, 981298, 991051, 991110, 991133, 991212, 991223, 0511369032, 05-11369-032, 0511369044, 05-11369-044, 791091, 981368, 987073, 991378, 997083, 91091, 990086
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:
✔ Clean the air chamber and check the air cartridge for leaks before installation.
✔ Use OEM repair kits (minor, major, super) for maintenance and seal replacements.
✔ Torque fan blade studs (3/8-16 thread) to OEM specifications—typically 22–25 ft-lbs.
✔ Ensure proper air engagement system setup for optimal fan clutch operation.
HTS Advantage 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.
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Warranty Information
