Air Compressor Pressure Switch 90-120PSI,1/4" NPT 12/24V DC Truck Air Horn | Heavy-duty metal construction, vibration resistant & durable. Ideal for truck air horns & onboard air compressor systems

90-120 PSI air compressor pressure switch serves as premium aftermarket pressure regulator for 12V & 24V truck onboard air systems. Equipped with standard 1/4"-18 NPT thread, this air tank pressure sensor auto activates at 90 PSI and shuts off power at 120 PSI to maintain stable pneumatic pressure, avoiding costly compressor breakdowns and air tank blowouts. It is widely adopted by truck DIY repairers and professional fleet maintenance teams for daily vehicle pneumatic system maintenance.Made of full corrosion-resistant metal housing, this pressure regulator stands up to extreme engine bay heat and constant road vibration for long-term heavy-duty use. Perfectly matched with truck air horns, train horns and air ride suspension assemblies, the built-in 2-pin plug terminals support direct quick replacement without rewiring or special repair tools.Wide application covers semi-truck air suspension, aftermarket horn kits and custom onboard air tank setups, compatible with most 12V/24V DC vehicle air compressor systems. This cost-effective OEM equivalent replacement part delivers consistent reliable performance for all truck air modification and repair projects.

• 1.Precise 90-120PSI Auto Pressure Control: Automatically turns on at 90PSI and cuts off at 120PSI to stabilize tank pressure, eliminate overpressure blowout risks and extend service life of air tanks, truck air horns and air suspension systems.
• 2.Universal 12V/24V DC Vehicle Fitment: Compatible with all heavy-duty truck pneumatic systems, built with standard 1/4 inch NPT thread for direct tank mounting without extra adapters, ideal for semi-trucks, train horns and onboard air kits.
• 3.Heavy-Duty Vibration & Heat Resistant Housing: Solid corrosion-proof metal shell withstands harsh under-hood high temperature and continuous road vibration, reducing frequent part replacement and long-term maintenance costs.
• 4.Tool-Free Plug & Play Quick Replacement: Equipped with 2-pin integrated terminals and standard NPT interface, swap defective pressure switches in minutes without complicated wiring or professional repair tools.
• 5.OEM Grade Stable Pneumatic Regulator: Fix fluctuating air pressure failure instantly, effectively prevent expensive damage to air compressors, truck horns and air suspension caused by abnormal pressure fluctuations.