Replacement 5 Hp Twin 2 Cylinder Air Pump for Air Compressor Compresser Unit. Maximum pressure: 125 PSI. For up to 5 HP. Maximum speed: 3,400 RPM. Thread size: 1/4 18 NPTF. Aluminum and cast iron construction Splash lubrication keeps pump running cool. 4 base mounting holes. Oil sight glass for easier maintenance. The item “Replacement 5 Hp Twin 2 Cylinder Air Pump for Air Compressor Compresser Unit” is in sale since Saturday, July 09, 2016. This item is in the category “Home & Garden\Tools\Air Compressors”. The seller is “tiltla” and is located in Banning, California. This item can be shipped worldwide.