About This

• CRITICAL FAN CLUTCH PROTECTION: The 994002 is the definitive inline air filter for pneumatic fan clutch systems. By trapping moisture and contaminants before they reach the solenoid, it prevents the #1 cause of fan drive failure: internal corrosion and seal leakage.
• WATER DRAIN & FILTRATION: Often referred to as a "water drain filter," this unit features a specialized element that separates liquid water and oil aerosols from the air supply. This ensures your fan clutch engages and disengages precisely without "morning sickness" or slippage.
• VERIFIED FITMENT & SPECS: Engineered with standard 1/4-inch NPT ports for universal heavy-duty application. This assembly is the direct OEM replacement for Horton 809396 and widely used on Volvo, International (Navistar), and other Class 8 commercial trucks.
• HEAVY-DUTY CONSTRUCTION: Unlike cheap plastic knock-offs, this assembly is built to withstand the extreme heat and vibration of the engine bay. It serves as a robust intake air cleaner for the control circuit, maintaining consistent air pressure (90-120 PSI) for reliable cooling performance.
• EASY INLINE INSTALLATION: Designed for tight engine compartments, this compact filter can be installed anywhere in the air supply line prior to the fan clutch solenoid. Regular replacement restores original equipment function and extends the life of your entire cooling hub.