COMPLETE HT650 ASSEMBLY: This is the fully assembled Horton HT650 pneumatic fan clutch, designed as a direct replacement for medium-duty commercial trucks. It provides reliable on/off fan operation to maintain optimal engine temperature without the power loss of a viscous drive.
VERIFIED FITMENT: Engineered specifically for applications compatible with Freightliner M2 and M2-112V chassis equipped with the Cummins ISB (6.7L) engine (Model Years 2008-2019). Please verify your current hub matches the 5.00-inch fan pilot diameter before ordering.
SPECIFICATIONS: Features a standard 5.00" Fan Pilot and a 6.00" Fan Bolt Circle. This hub is designed to handle the high airflow requirements of modern emissions-controlled diesel engines while minimizing parasitic load when the fan is disengaged.
DIRECT REPLACEMENT: Replaces older Horton part numbers 981455, 99A9649, and 98A9649. It is also the direct functional equivalent to the aftermarket Kit Masters 8055N conversion clutch.
HEAVY-DUTY DESIGN: Built to withstand the stop-and-go thermal cycling of vocational and delivery trucks. The HT650 design uses a simplified internal mechanism to reduce maintenance intervals and extend the service life of the belt drive system.
وصف
Horton 991455 HT650 Fan Clutch AssemblyThe Horton 991455 is the industry-standard cooling fan clutch for medium-duty Freightliner applications. Known as the HT650 Series, this pneumatic hub offers precise on/off control, ensuring your engine fan only spins when necessary. This reduces noise, saves fuel, and frees up horsepower for the drive wheels.
This unit is a complete, bolt-on replacement for the OEM clutch found on thousands of Cummins ISB-powered trucks. If your current fan clutch is seized, leaking air, or failing to engage, this assembly restores factory cooling performance immediately.
Part Type: HT650 Pneumatic Fan Clutch
Actuation: Air Engaged / Spring Disengaged (On/Off)
Fan Pilot Diameter: 5.00 Inches
Fan Bolt Circle: 6.00 Inches
Application: Compatible with Freightliner M2 (Cummins ISB)
Compatible with Horton: 991455, 981455, 99A9649, 98A9649
Replaces Kit Masters: 8055N, 8055NKIT
Replaces Navistar / International: FLT99649
Replaces Alliance: ABP N20 99649
