Doosan HR350 is a drop in replacement for legacy HR2.5 airend
Re-designed High Pressure Airend

HR350 Two Stage Airend is a direct “drop in” replacement for the Ingersoll Rand® HR2.5 airend used in Ingersoll Rand® and Atlas Copco® drills and air compressors.                                     
Key design enhancements make the HR350 more durable, easier to service and backed by a robust warranty and an optional No Charge Extended warranty of 5 years / 10,00 hours with the use of Doosan filters and lubricant.            
The HR350 is a proven design with thousands in the field. All backed by an experienced support staff, strong Dealer network and manufactured in Statesville, North Carolina.
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Doosan Designed Equals Increased Productivity

NEW OEM Manufactured Airends: Doosan Portal Power has a long staff history of developing and manufacturing high quality two stage high pressure airends. While part of Ingersoll Rand®, Portable Power staff were responsible for manufacturing, supporting and remanufacturing airends used in portable compressors and Ingersoll Rand® Drills. That experience was leveraged when Doosan purchased the Portable business resulting in the HR350 airend.
Remanufactured (rebuilt) Airends: Doosan Factory remanufactured airends are carefully disassembled and inspected to ensure that any damaged or obsolete parts are replaced. Each airend is rebuilt by experienced craftsmen at Doosan Portable Power’s worldwide headquarters.
The Airend Exchange Program also offers extended warranty options, In fact all rebuilt airends get a new airend warranty which is eligible for an extended warranty.
Every HR350 is shipped with a conversion kit.  The kit contains a replacement regulation bracket and 4 parts needed to complete the HR350 installation.
Doosan HR350 Performance and Compatibility Chart