The Ingersoll Rand P185 is a portable air compressor used in construction, utility, and industrial applications. It is commonly configured as a towable diesel-powered unit designed to supply compressed air for pneumatic tools, sandblasting, drilling, and general jobsite air needs. The P185 is known for its compact footprint, durable enclosure, and service access suited to field use. Typical specifications include a free air delivery rating around 185 cfm, with operating pressure options commonly in the 100 to 175 psi range depending on configuration. It is part of Ingersoll Rand's portable compressor lineup for demanding mobile air supply applications.