Product Description
KB791078X – HT/S ADVANTAGE FAN CLUTCH (Kenworth/Cummins ISM)
PART NUMBER(S):
Fleet Products: KB791078X (Remanufactured) | OE: 791078, 987017, 997027, KB791078X, HOR791078, 91078, KM91078, FLT91078, 987017, 997027, 702107AT
DESCRIPTION:
Model: HT/S Advantage
Vehicles: Kenworth (1998–2001, Cummins ISM)
• Belt Count: 1
• Belt Groove Count: 8
• Belt Groove Type: PK
• Belt Type: 8PK
• Fan Pilot Diameter: 2.00"
• Fan Blade Bolt Circle: 3.5"
• Pulley Diameter: 7.50"
• Friction Plate: 9.5"
• Drive Type: Pneumatic / Air-engaged On/Off
• Engagement Type: Piston friction disc technology
Applications:
Is this fan clutch compatible with your Cummins ISM-powered Kenworth? Yes—designed for 1998–2001 Kenworth models, this HT/S Advantage fan clutch delivers reliable on/off cooling control, extended service life, and drop-in OEM fitment for demanding fleet applications.
CROSS-REFERENCE(S):
997027, 791078, 987017, KMN2091078, KM N20 91078, ABPN2091078, ABP N20 91078, FLT91078, RX791078RMANRF, RX791078RMAN, KMI91078, 3443-91078, 91078, HT791078, K5 91078, K591078, ZBH791078, HOR791078, KM91078, 9500HP
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:
✔ Torque lock nut (pulley to hub) to 150 ft-lb (203 Nm)
✔ Torque button head cap screws to 35–40 in-lb (4–4.5 Nm)
✔ Torque air chamber cap screws to 180 in-lb (20.3 Nm)
✔ Clean and lubricate splines with anti-seize before assembly
✔ Align lockup holes before torquing
✔ Verify air engagement pressure between 90–120 psi
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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