Product Description
KB791005X - HTS ADVANTAGE FAN CLUTCH (KENWORTH / CATERPILLAR 3406)
PART NUMBER(S):
Fleet Products: KB791005X (Remanufactured) | OE: 791005, 981265, 991255
DESCRIPTION:
Model: HT/S Advantage
Vehicles: Kenworth T800, W900B, C-510, C-520 (1970–2001)
• Clutch Type: On/Off Pneumatic with thermal fuse
• Engine Fitment: Caterpillar 3406, 3406B, 3406 ATAAC
• Belt Type: 4V, 4-Groove
• Belt 1st Groove Distance: 2.3"
• Fan Pilot Diameter: 2"
• Fan Blade Bolt Circle: 3.5"
• Fan Blade Stud Length: 6x, 3/8-16 Thread, 1.62'' Long
• Pulley Diameter: 8.5"
• Front Pulley Diameter: 8.5"
• Friction Plate: 9.5"
• Mounting Distance: Vertical 8.0" X Horizontal 5.0"
Applications: What’s it built for? This HT/S Advantage fan clutch suits Caterpillar 3406-powered Kenworth trucks. Common in long-haul and vocational use cases with demanding cooling needs.
CROSS-REFERENCE(S):
591005, 791005, 981265, 839874, 991009, 991255, 91005, KMN2091005, KM N20 91005, ABPN2091005, ABP N20 91005, FLT91005, RX791005RMANRF, RX791005RMAN, KMI91005, 3443-91005, HOR-791005, HOR791005, HOR981265, KM91005, K591005, KC91005, ZBH791005, NJ791005, DE591005, DE791005, X3591005, HI591005, HI791005, HR591005, HR791005, HR791005C1
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:
✔ Core return is required for remanufactured units
✔ Air system must maintain minimum 90 PSI for optimal clutch engagement
✔ Replace hub bearings when installing to ensure long-term reliability
✔ Equipped with System Sentry fuse for fail-safe disengagement on overheat
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
- Price Match Guarantee | Find a better price? We'll beat the difference by 10%!
