Product Description
KB799570X – DRIVEMASTER FAN CLUTCH (WESTERN STAR / DETROIT DIESEL DD13, DD15, DD16)
PART NUMBER(S):
Fleet Products: KB799570X (Remanufactured) | OE: Horton 79A9570 (Reman), 99A9570 (New) | Kit Masters 99570, 10023623, 3008520C1, 3012575C91
DESCRIPTION:
Model: Horton DM Advantage Fan Clutch
Vehicles: Western Star 4900 (2007–2016), Freightliner Cascadia 113BBC, M2-112, 114SD
Engines: Detroit Diesel DD13, DD15, DD16
• Clutch Style: On/Off
• Belt Configuration: 10PK serpentine
• Back Pulley Diameter: 6.85″
• Belt Groove Location: 1.98″
• Fan Pilot Diameter: 2.56″
• Fan Blade Stud Length: 0.81″
• Stud Thread Size: 0.375-24 UNF
• Bolt Circle Diameter: 3.5″
• Overall Length: 7.88″
• Vertical Mounting Distance: 2.83″
• Horizontal Mounting Distance: 8.66″
• Center of JB to Top-Right Mounting Hole: 1.5″
• Minimum Air Pressure Required: 90 psi (620.5 kPa)
Applications:
Engineered for Detroit Diesel DD13, DD15, and DD16 engines across Western Star and Freightliner platforms. This Horton DriveMaster fan clutch provides optimized cooling efficiency, fuel economy, and reduced parasitic load. Remanufactured to OEM standards for dependable heavy-duty service.
CROSS-REFERENCE(S):
10023623, 3008520C1, 3012575C91, 3912-99A9570, 3912-99A9570-2, 702756AT, 799625, 79A9570, 79A9570-2, 79A9570RMAN, 989970, 98A9570, 98A9570-2, 98A9625, 98A9970, 99570, 999570, 999625, 999970, 99A9570, 99A9570-2, 99A9970, FLT14256, FLT24256, FLT99570, FLT995702, HOR79A9570, HOR79A9570-2, HOR99A9570, HOR99A9570-2, HOR99A9970, KM99570, ZBH99A9570, ZBH99A9570-2
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 belt style: 10PK serpentine
✔ Verify bolt circle, fan pilot, and pulley specs before install
✔ Fits Detroit Diesel DD13, DD15, DD16 across Western Star and Freightliner models
✔ Use Horton rebuild kit 994305 for full service or overhaul
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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