Horton 991455 Fan Clutch HT650 – Freightliner M2 Cummins ISB Reverse Neutral Switch Manufacturer World American (Midwest Truck Manufacturer World American (Midwest Truck & Auto Parts) Part Number WA801266 Part Type AD IS Air Dryer Assembly Style AD IS (Integrated Solution) with Extended Purge Voltage 12V DC Heater Wattage 90 W Heater Connector Metri Pack 280 Series Supply Port 1 2 14 NPT Governor Unloader Port 1 8 27 NPT Primary Delivery Port 1 4 18 NPT Secondary Delivery Port 1 4 18 NPT Accessory Ports 3 x 1 4 18 NPT Primary Port Opening Pressure 103 PSI Secondary Port Opening Pressure 109 PSI Accessory Port Opening Pressure 109 PSI Safety Valve Opening Pressure 153 PSI Mounting Stand alone CAT 3406E (14 43 in Piston Assembly Horton 994318 Core Charge None Cross References Manufacturer Horton Part Number 991455 OEM Number 981455 Part Type Engine Fan Clutch Fan Drive Clutch Type HT650 Operation Pneumatic On Off Engine Compatibility Cummins ISB Overall Length 5