Product Description
KB791066X - HT/S ADVANTAGE FAN CLUTCH (CATERPILLAR C10/C12)
PART NUMBER(S):
Fleet Products: KB791066X (Remanufactured) | OE: 791066, 987077, 91066
DESCRIPTION:
Model: HT/S Advantage (High Torque Slip Type, Air Engaged, PFD: Piston Friction Disc)
Vehicles: Freightliner and Sterling trucks with Caterpillar C10 and C12 engines (1997–2001)
• Clutch Type: On/Off Pneumatic Fan Clutch
• Back Pulley Diameter: 7.50"
• Front Pulley Diameter: 9.00"
• Overall Length: 6.42"
• Belt Configuration: 8K, 6K serpentine belts
• Belt Groove Location: 1.08"
• Belt Groove Count: 6, 8
• Belt Groove Type: PK
• Belt Count: 2
• Bolt Circle Diameter: 3.50"
• Fan Pilot Diameter: 1.99"
• Vertical Mounting Distance: 10.00"
• Horizontal Mounting Distance: 2.32"
• Friction Plate: 9.5"
• Weight: 50 lbs
Applications: Is this fan clutch compatible with your Caterpillar-powered truck? Yes—engineered for Freightliner and Sterling models with C10 or C12 engines (1997–2001), this HT/S Advantage provides reliable OEM cooling performance, precise belt alignment, and long service life in demanding fleet operations.
CROSS-REFERENCE(S):
991305, 791066, 991306, 997087, 991346, 987077, 981319, 981318, 981339, KMN2091066, KM N20 91066, ABPN2091066, ABP N20 91066, FLT91066, KMI91066, 3443-91066, 1000-791066, 1000791066, HOR791066, HOR987077, FC791066, K5 91066, K591066, RC 791066, RC791066, ZBH791066, 91066, KM91066, 91066, KM N20 91066, 91066, 91066, 791066, 981318, 981319, 981339, 987077, 991305, 991306, 991346, 997087, KM N20 91066, KMN2091066, KMI91066, ABPN2091066, ABP N20 91066, FLT91066, 91066, KM91066, 3443-91066, 1000-791066, 1000791066, HOR791066, HOR987077, FC791066, K5 91066, K591066, RC 791066, RC791066, ZBH791066
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 mounting and fan dimensions before installation.
✔ Ensure correct belt configuration and pulley alignment for proper operation.
✔ Compatible with Freightliner and Sterling trucks from 1997–2001 equipped with Caterpillar C10 or C12 engines.
✔ Apply 90–120 psi air pressure during engagement testing for accurate function verification.
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.
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, call 1-877-243-0442 or email sales@fleet-products.com
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