This compressor is an original piece. It contains 1 year warranty, but you must follow the guidelines: 

1) Must purchase the filters which are the expansion valve, dryer, and condenser.

2) Installation/Invoice and filter notes are required.

 3) Must be installed by certified mechanic.

4) Refund/Replacement will only be issued within 6 days of purchase in order to be tested if defective.

5) Trucks, diesel pick-up, and tractor compressors only contain a 90 day warranty from date of purchase.

6)"We do not give refunds" we will exchange your item but you must have all receipts of purchasing NEW expansion valve, dryer and condenser within time of receiving your item all receipts must be dated within one week.

 7) As long as ALL guidelines are followed and you send us proof of receipts via email and we verify you demonstrated the guidelines shipping from and to you will be covered by us. NOTE that failure to follow the guidelines will void the warranty.