Compressor Pump KU 1-2hp

Part #: KU
Call to order 866-208-2797

Emglo and Jenny KU Air Compressor Pump with Head Unloaders, Single Stage for 1-2hp Applications - 421-1102

The KU compressor pump is a common pump used on several of the Jenny and Emglo air compressor models. These are most commonly seen in climate control and fire supression applications. The KU pump includes built in head unloaders for constant run applications.

These single stage piston compressor pumps were originally manufactured by Emglo Air Compressors. After Emglo was purchased by DeWalt, Jenny Air Compressors continued manufacturing this pump. The original Emglo part number was KU, the internal Jenny part number is 421-1102 and the internal DeWalt part numbers were Z-A16622 and 5133354-00.

If you are replacing an existing KU pump we would recommend confirming your serial number prior to ordering. There are two different versions of this pump depending on when it was manufactured. This specific bare pump is for their 'older style' models which are the most common. Old style pumps have a serial number that will start with the letter F. New style KU pumps start with the letter G. The internal Jenny part number for the old style pump is 421-1102 which is this product. Please contact us for pricing and availability if you have a serial number that starts with the letter G.

The Jenny KU bare pump is not shipped with oil. We recommend purchasing a quart of their Ultimate Blue compressor oil. A flywheel is included with the purchase of the KU bare compressor pump.


  • HP Range: 1-2HP
  • Number of Pistons: 2
  • Maximum Design Pressure: 150psi
  • Shipping Weight: 50lbs
  • Belt Style: A Groove
  • Internal factory number: 421-1102.