Product Description
KB791007X - HTS ADVANTAGE FAN CLUTCH (CATERPILLAR 3406, FREIGHTLINER/STERLING/WESTERN STAR)
PART NUMBER(S):
Fleet Products: KB791007X (Remanufactured) | OE: 791007, 91007, 981006, 981141, 981214, 981219, 981261, 981294, 991021, 991148, 991283
DESCRIPTION:
Model: HTS Advantage (On/Off Style)
Vehicles: Freightliner / Western Star / Sterling – Caterpillar 3406, 3406C, 3406E
• Type: Air-engaged, spring-disengaged fan clutch
• Operation: On/off engagement reduces engine noise and conserves fuel
• Torque: High torque output – engineered for large engine fans
• Hub/Bearing: Advanced hub bearing assembly for extended durability
• Friction Plate: 9.5"
• Pulley Type: 4V (multi-groove V-belt configuration)
• Fan Pilot Diameter: 2"
• Front Pulley Diameter: 9.5"
• Back Pulley Diameter: 6.25"
• Overall Length: 7.29"
• Fan Blade Stud Length: 6x, 3/8-16 Thread, 2.62" Long
• Belt 1st Groove Distance (IN): 2.31
• Bolt Circle: 3.5"
• Vertical Mounting Distance: 10.0"
• Horizontal Mounting Distance: 5.0"
• Truck Manufacturer: Freightliner, Sterling, Western Star
Applications:
Is this fan clutch compatible with your Caterpillar-powered heavy-duty truck? Yes—engineered for models like FLD 120 and FLB from 1989–2001, this HT/S Advantage reman delivers consistent on/off cooling with OEM drop-in fitment for Caterpillar 3406, 3406C, 3406E engines.
CROSS-REFERENCE(S):
20073A, 20822-3508, 20822-3515, 20822-3533, 91007, 981006, 981141, 981214, 981219, 981261, 981294, 991021, 991148, 991283, KB791007, RF791007X, 791007, 3406 ATC, 3406C, 3406E, 791097X, 981343, 997096, 987076, 991350, 3443-91007, 981365, 981366, 987078, 987079, 991375, 997088, FLT91007, ABPN2091007, KMI91007, KMN2091007, 1000-791007, 1000791007, 591007, FC791007, HOR-791007, HOR791007, HT791007, K5 91007, K591007, KC91007, KM N20 91007, RC 791007, RC791007, ZBH791007, FLT91097
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, pulley groove, and bolt pattern match vehicle spec before install
✔ Air line must be clean, dry, and properly routed
✔ Use manufacturer torque specs when securing unit to mounting surface
✔ Inspect and replace bearings if signs of wear are present
✔ Thermal fuse disengagement protects system from overheating
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
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- Competitive pricing with core return refunds
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