The Chicago Pneumatic CPS 185 KDU is a 185 CFM at 100 PSI single-stage, oil-injected rotary-screw air compressor in a utility-mount enclosure built to bolt to a truck deck. A 49 hp naturally aspirated Kubota V2403 four-cylinder diesel meets Tier 4 Final with DOC/DPF aftertreatment no DEF and a 120V block heater comes standard for dependable winter starting.

This puts the 185 CFM class on the truck instead of behind it: enough air for two 90 lb paving breakers or a multi-tool utility circuit, with all service points plumbed to one side and a 110% spillage-free containment frame underneath. CP’s XC2003 controller monitors temperatures, oil pressure and fuel with warnings and shutdowns. Compare towable machines of the same output in our diesel compressor range, or the rest of the Chicago Pneumatic compressor page. An optional cold-weather package stretches service intervals to 1,500 hours or two years.

• 185 CFM at 100 PSI from a single-stage, oil-injected rotary-screw airend
• 49 hp Kubota V2403 naturally aspirated four-cylinder diesel; Tier 4 Final with DOC/DPF aftertreatment no DEF required
• Utility-mount enclosure with support frame for fixed mounting on a truck deck; 110% spillage-free containment frame
• 22.3 gal fuel tank; fuel consumption from 1.6 gal/hr at 25-50% load to 2.3 gal/hr at full load
• CP XC2003 controller with operational monitoring, diagnostics, warnings and protective shutdowns; 120V block heater and heavy-duty battery standard
• Spin-on compressor oil separator and single-side service points simplify maintenance; Red Rock enclosure
• Options: cold-weather package (extends service interval to 1,500 hours or 2 years), hose reel with extended draw bar, OSHA valve
• Available from Crowder Supply in Denver with Chicago Pneumatic parts support

CPS 185 KDU FAQ

Does the CPS 185 KDU need DEF?
No. The 49 hp Kubota V2403 meets Tier 4 Final with DOC/DPF aftertreatment alone, so there is no DEF tank to fill, and a 120V block heater is standard for winter starts.

How much fuel does it burn?
Fuel consumption runs from 1.6 gal/hr at 2550% load to 2.3 gal/hr at full load, drawn from a 22.3 gal tank.

What tools will 185 CFM run?
185 CFM at 100 PSI is enough air for two 90 lb paving breakers or a multi-tool utility circuit.

Why choose a utility-mount over a tow-behind?
The utility-mount enclosure bolts to a truck deck with a 110% spillage-free containment frame and all service points on one side, so the air rides with the truck instead of behind it the air compressor buyers guide covers weighing the two formats.