Product Description
KB799347X | DRIVEMASTER FAN CLUTCH
PART NUMBER(S):
Fleet Products: KB799347X (Reman) | OE (Horton): 989347 | OE (Kit Masters): 99347
DESCRIPTION:
Model: Horton DM Advantage Two-Speed
Engines: Caterpillar C13 ACERT
Vehicles: Peterbilt 357, 378, 379 (2003–2007) | Mack (select vocational models, per OE ref)
• Clutch Type: Air Actuated, Two-Speed
• Back Pulley Diameter: 5.04″
• Front Pulley Diameter: 5.23″
• Belt Configuration: 8PK
• Fan Pilot Diameter: 2.56″
• Fan Blade Bolt Circle: 3.5″
• Fan Blade Stud Length: 1.05″ (.375-24 UNF thread)
Applications:
Fits 2003–2007 Peterbilt trucks with Caterpillar C13 ACERT engines.
Also used in Mack vocational trucks (OE refs 3912-999347, 3912999347, 40MH413AM).
Engineered for heavy-duty fleet cooling with reliable airflow management under demanding loads.
CROSS-REFERENCE(S):
799347RMAN, 999347, K799347, R799347, FLT99347, F17-1000-404, F171000404, FC799347, HOR799347, HT799347, HT999347, ABP N20 99347, ABPN2099347, K5 99347, K599347, KM N20 99347, KMN2099347, RC 799347, RC799347, 1000-799347, 1000799347, 3443-99347, 3443-993472, 3912-799347, 3912-999347, 3912799347, 3912999347, 799347, 799347-2, 7993472, 989347, 989917, 99347, 999917, ABP N20 993472, ABPN20993472, FLT993472, HOR999347, KMI99347, KMI993472, KM N20 993472, KMN20993472, RF799347X, ZBH999347, 40MH413AM, 6514-060-1, 65140601, 79A9494-2, 79A94942, 79A9494-2RMAN, 79A94942RMAN, HO79A94942, HOR79A94942, HT79A94942, ZBH79A94942
A cross-reference listing means this part should be a suitable replacement for the part numbers listed. Please confirm all dimensions match your application before installing.
IMPORTANT INSTALLATION NOTES:
✔ Confirm pulley diameters match your original clutch before installation
✔ Inspect mounting hole spacing and fan pilot diameter for exact fit
✔ Replace O-rings and gaskets to ensure proper sealing
✔ Torque bolts to manufacturer specifications — do not overtighten
✔ Test fan clutch function after installation for proper engagement
Drivemaster On/Off Repair Kits:
- Minor Seal Repair Kit: 294346
- Major Repair Kit: 294351
- Super Repair Kit: 295568, 295575, 299985, Q299999 (Universal)
- Lining Kit: 294349
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 or email sales@fleet-products.com .
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