Product Description
KB799646X HORTON DRIVEMASTER REMAN FAN CLUTCH – FOR VOLVO & MACK WITH DETROIT DIESEL D16
PART NUMBER(S):
HORTON OEM: 79A9646, 98A9646, 99A964, HOR79A9646, HOR99A9646
BEHR: 21254045
BORGWARNER: 21192250, 21508309
VOLVO: 20883819, 21192248, 21251045, 21436410, 21508309, 21596051, 22113059, 22113079, 85115602, 85139330
MACK: 43MH58M
NAVISTAR: FLT99554
DESCRIPTION:
Sold as Remanufactured – Core Return Required
Heavy-duty Horton fan clutch assembly for Volvo and Mack commercial trucks
Back Pulley Diameter: 7.4 in
Overall Length: 6.89 in
Belt Configuration: 12PK
Belt Groove Location: 1.48 in
Bolt Circle: 3.5 in
Fan Pilot Diameter: 2.56 in
Fan Blade Stud Length: 1.07 in
Stud Thread Size: .375-24 UNF
Vertical Mounting Distance: 7.21 in
Horizontal Mounting Distance: 6.73 in
Center of JB to Top Right Mounting Hole: 2.82 in
Designed for high-load and high-heat environments with minimal drag when disengaged
Built to meet or exceed OEM performance standards for Class 8 Volvo and Mack applications
Ideal for vertical mount thermal control in long-haul fleets
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
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
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, call 1-877-243-0442 or email sales@fleet-products.com and reference Code WEB01.
WHY CHOOSE Fleet Products | KBR - Heavy Duty Truck & Trailer Parts?
- Canadian-owned since 1985
- Trusted by fleets, mechanics, and B2B partners across North America
- Fast, Reliable Shipping Across North America
- Competitive pricing with Core Return Refunds
- Price Match Guarantee – Find a better price? We’ll beat the difference by 10%!
