Emglo/Jenny GU Air Compressor Pump with Head Unloaders, Single Stage, 3-5hp 421-1824

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

Emglo and Jenny GU Air Compressor Pump with Head Unloaders, Single Stage for 3-5hp Applications - 421-1824

The GU compressor pump is a reciprocating / piston 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 GU pump includes built in head unloaders for constant run applications. Jenny reciprocating pumps are a full cast iron design and are manufactured in the USA.

These high quality 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 GU and the internal Jenny part number is 421-1824.

The Jenny GU 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: 3-5 HP
  • Number of Pistons: 4
  • Maximum Design Pressure: 150psi
  • Shipping Weight: 85lbs
  • Belt Style: A Groove x 2
  • Internal factory number: 421-1824
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