HydraMaster Boxxer 423s Truck Mount

Item # HM-TMB423S1-EA

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HydraMaster Boxxer 423s Truck Mount

Item # HM-TMB423S1-EA

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  • More power through increased engine horsepower
  • 235°F Maximum Temperature
  • OPTI-AIR™ flow system makes the machine quieter

Product Information

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The HydraMaster Boxxer 423s takes the proven track record of the industry’s top selling truck mount, the Boxxer 421, to a new level of reliability, durability, and serviceability.


The Boxxer 423s provides more power through increased engine horsepower and improves serviceability by providing easier accessibility to crucial components, including the heat exchanger.


The 423s has also reduced noise by optimizing airflow with the OPTI-AIR™flow system through the entire machine which provides more consistent heat performance and makes the machine quieter in operation. You can clean everything from the filthiest carpet, to the most delicate upholstery fabric, to the grimiest tile or concrete floor.


Power plant: 23HP Briggs & Stratton™ V-Twin Vanguard™ industrial series engine

Blower: Dominator™ 4005 Tri-Lobe, HydraMaster Exclusive Design, 300+ CFM, dual oil bath design with sight level windows

Solution pump: 4.0 GPM plunger pump 1,000 operating PSI, electric clutch control

Heating System: Finned tube heat exchanger 

Chemical System: Stainless steel last-step chemical injection, meter controlled

Recovery Tank: 70-gallon MaxAir™ recovery tank; aluminum, baked-on powder-coated finish, includes stainless steel filter and filter basket


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Horsepower 23
PSI 1000
Application Carpet, Tile and Grout
Heating System Heat Exchange
Wand Capacity Single
Category Truck Mounts
Brand HydraMaster
Condition New