Product Description
KB799646X – HORTON DRIVEMASTER FAN CLUTCH (VOLVO VNL/VT D16)
PART NUMBER(S):
Fleet Products: KB799646X (Remanufactured) | OE: Horton 79A9646, Volvo 20883819, 21251045, 21436410, 21508309, 21596051, 22113079, 43MH58M, BorgWarner 21192250
DESCRIPTION:
Model: Horton DriveMaster (Remanufactured)
Vehicles: Volvo VNL (2007–2010), Volvo VT (2007–2010) with D16 engines; Mack Class 8 trucks with Detroit Diesel D16
• Back Pulley Diameter: 7.4″
• Overall Length: 6.89″
• Belt Configuration: 12PK
• Belt Groove Location: 1.48″
• Fan Pilot Diameter: 2.56″
• Bolt Circle: 3.5″
• Fan Blade Stud Length: 1.07″
• Stud Thread Size: .375-24 UNF
• Vertical Mounting Distance: 7.21″
• Horizontal Mounting Distance: 6.73″
• Center of JB to Top Right Mounting Hole: 2.82″
• Construction: Built for high-load, high-heat use with low drag when disengaged
• Performance: Meets or exceeds OEM cooling and durability standards
Applications:
Is this Horton DriveMaster fan clutch compatible with your Volvo VNL or VT powered by the D16? Yes—engineered for 2007–2010 Volvo and Mack Class 8 trucks, this reman unit delivers efficient cooling, reduced parasitic loss, and reliable thermal control for Detroit Diesel D16 engines.
CROSS-REFERENCE(S):
20883819, 21251045, 21436410, 21508309, 21596051, 22113079, 3443-99554, 3443-995542, 43MH58M, 79A9554, 79A9554-2, 79A9646, 79A9646-2, 85115602, 85139330, 98A9554-2, 98A9646-2, 98A9554, 98A9646, 99A9554-2, 99A9646-2, 99A9554, 99A9646, ABP N20 99554, ABP N20 995542, ABPN2099554, ABPN20995542, FLT99554, FLT995542, KM N20 99554, KM N20 995542, KMI99554, KMI995542, KMN2099554, KMN20995542, 21254045, 21192250, 21508309, 22113059, 21192248, 85115602, 85139330, 9910097, 9810097, 79A7253, 79A9645, 98A9552, 98A9552-2, 98A9644, 98A9645, 99A9552, 99A9552-2
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 vertical mounting dimensions and bolt alignment
✔ Inspect fan studs and threads before installation
✔ Confirm pilot diameter and pulley fitment
✔ Use torque specs provided by OEM
✔ Ensure belt tension is calibrated to 12PK configuration
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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