Description
KB799103X - HORTON DRIVEMASTER ON/OFF FAN CLUTCH FOR PETERBILT/CATERPILLAR 3406, C15, AND C16
PART NUMBER(S):
Fleet Products: KB799103X (Remanufactured) | Replaces OE: Horton: 79A5103, 79A9103, 98A9103, 99A9103, 989103, 999103 | Peterbilt: 05-25159-014 | Caterpillar: 20R-8388 | Kysor: 1077-07767-01, 1077-07767-04, 1093-07768-04 | Kit Masters: 99103, KMI99103, KMN2099103 | Alliance: ABPN2099103 | Fleetrite: FLT99103
DESCRIPTION:
Model: Horton DriveMaster DMA SE 21 Pneumatic On/Off Fan Clutch
Vehicles: Peterbilt Conventional, COE, 357-111, 357-119, 375, 377, 378, 378-119, 379, 379-119, and 379-127 trucks from 1980-2002
Engines: Caterpillar 3406, 3406B, 3406 ATAAC, 3406E, C15, and C16
• Pulley Diameter: 7.50"
• Belt Configuration: Four-groove V-belt
• Fan Pilot Diameter: 2.56"
• Fan Blade Bolt Circle: 3.50"
• Number of Fan Blade Studs: 6
• Fan Blade Stud Length: 1.07"
• Fan Blade Stud Thread: 3/8"-24
• Overall Length: 7.28"
• Clutch Operation: Pneumatic on/off
CROSS-REFERENCE(S):
104905, 3443-99103, 3912-79A9103, 525159014, 790007, 799103, 79A9103RMAN, ABP N20 99103, Alliance Truck Parts ABP N20 99103, Alliance Truck Parts KM N20 99103, Daimler Truck North America KM N20 99103, HOR79A9103, HOR999103, K799103, KB799103, KM N20 99103, KM99103, Peterbilt FLT99103, R799103, RF799103X, RX79A9103RMAN, RX79A9103RMANRF
A cross-reference listing means this part may be a suitable replacement for the listed part numbers. Always verify fitment before installation.
IMPORTANT INSTALLATION NOTES:
✔ Confirm the 7.50" pulley diameter and four-groove V-belt configuration against the removed clutch.
✔ Verify the 2.56" fan pilot, 3.50" bolt circle, six-stud pattern, 3/8"-24 thread, 1.07" stud length, and overall length.
✔ Inspect the belts, pulley grooves, fan blades, hub bearings, air lines, control components, and mounting surfaces.
✔ Torque all fan-clutch, fan-blade, pulley, and mounting hardware to Horton, Caterpillar, or Peterbilt specifications.
✔ Verify belt alignment, air-system sealing, clutch engagement, disengagement, and fan-to-shroud clearance.
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.
Warranty Information
