Product Description
KB791008X - HT/S ADVANTAGE FAN CLUTCH
PART NUMBER(S):
Fleet Products: KB791008X (Remanufactured) | OE: 791008, 79A1008, 91008, 981008, 98A1008, 991008, 99A1008, FC791008
DESCRIPTION:
Model: HT/S Advantage (On/Off Style)
Vehicles: Freightliner, Western Star – Caterpillar 3406, 3406 ATAAC (1988–1995)
• Type: Pneumatic on/off engagement
• Friction Plate: 9.5"
• Front Pulley Diameter: 7.5"
• Back Pulley Diameter: 9.5"
• Fan Pilot Diameter: 2"
• Fan Blade Bolt Circle: 3.5"
• Fan Blade Stud Length: 6x, 3/8-16 Thread, 2.62" Long
• Belt Configuration: 4V (4-groove V-belt)
• Belt 1st Groove Distance: 2.31"
• Drive Type: Pneumatic on/off
• Hub/Bearing: Two-bearing hub assembly with advanced dust seal technology
• Mounting: OEM-spec drop-in replacement
Applications:
Is this fan clutch compatible with your Caterpillar-powered heavy-duty truck? Yes, engineered for Freightliner and Western Star models from 1988–1995, this HT/S Advantage delivers dependable cooling performance with drop-in OEM fitment for 3406 and 3406 ATAAC engines.
CROSS-REFERENCE(S):
991022, KB791008, RF791008X, 791008, 3406 ATC, 981007, 981282, 991271, 20072A, 20822-3520, 208223520, 3912-791008, 3912791008, 591008, 791008-HO, 791008HO, ABP N20 91008, ABPN2091008, HOR 791008, HOR791008, RF591008X, ZBH791008, FLT91008, KMI91008, 3443-91008, KMN2091008, KM N20 91008, 1000-791008, 1000791008
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 fan pilot diameter, pulley diameters, and belt configuration before installation
✔ Ensure clean, properly routed air supply line (minimum 90 PSI)
✔ Follow manufacturer torque specifications during installation
✔ Replace hub bearings when replacing the fan clutch for maximum lifespan
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 | Email: sales@fleet-products.com
WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?
- Canadian-owned and operated since 1985
- Trusted by fleets, mechanics, and B2B partners across North America
- Fast, reliable shipping across North America
- Competitive pricing with core return refunds
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