The Black Diamond Pressure Switch is a genuine replacement part designed to regulate and maintain proper air pressure in your air compressor. Rated for a pressure range of 125–155 PSI, this 4 port switch with an integrated bleeder ensures the compressor motor turns on and off at the correct pressure levels for efficient operation. Ideal for replacing a faulty switch when the motor cuts out too early or fails to start at the proper PSI, this durable and long lasting pressure switch helps restore reliable performance and optimal compressor efficiency.