Product Description
KB791020X - HT/S ADVANTAGE FAN CLUTCH (CATERPILLAR 3406 SERIES)
PART NUMBER(S):
Fleet Products: KB791020X (Remanufactured) | OE: 791020, 91020, 1077-07935-01
DESCRIPTION:
Model: HT/S Advantage
Vehicles: Kenworth T600, T800, T800H, W900B, W900L, W900L2 (1990–2001) with Caterpillar 3406, 3406E, 3406C, and 3406 JWAC engines
• Clutch Type: Pneumatic On/Off with thermal fuse
• Friction Plate: 9.5"
• Belt Configuration: 4V (4 groove)
• Belt Groove Location: 2.30"
• Belt Groove Type: V
• Belt Count: 4
• Back Pulley Diameter: 7.00"
• Fan Pilot Diameter: 2.00"
• Bolt Circle Diameter: 3.50"
• Fan Blade Stud Length: 6x, 3/8-16 Thread, 1.62" Long
• Mounting Type: Vertical 8.00"
• Bearing Design: Dual bearing hub assembly with advanced sealing
• Minimum Air Pressure Required: 90 psi
Applications:
Is this fan clutch compatible with your Caterpillar 3406-powered Kenworth? Yes—designed for T600, T800, T800H, W900B, W900L, and W900L2 models from 1990–2001, this HT/S Advantage provides OEM-grade cooling control with a rugged 4-groove pulley and 2" pilot for direct CAT 3406 fitment.
CROSS-REFERENCE(S):
981103, 791020, 991112, 991046, 981309, 991297, 981031, 591020, KMN2091020, KM N20 91020, ABPN2091020, ABP N20 91020, FLT91020, RX791020RMANRF, RX791020RMAN, KMI91020, 3443-91020, 10770793501, 10770793502, 1093-07936-01, 1093-07936-02, 10930793601, 10930793602, 3912-791020, 3912791020, 791020-HO, 791020HO, 791020RMAN, ABP N20 91020, FLT0793501X, FLT0793502X, HOR 791020, HOR-791020, HOR791020, KC91020, RF591020X, RF791020X, ZBH791020, KB791020, RF791020X, 981089, 991035, 981159, 991162
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 and pulley size match your existing setup before installation.
✔ Ensure mounting surface and bolt threads are clean and free from debris.
✔ Torque fan blade bolts to manufacturer specifications.
✔ Confirm adequate air pressure supply (minimum 90 psi) for proper clutch engagement.
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
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