This is brand new OEM compatible with Ingersoll Rand 15T HP Piston 3.5″ Part # 30215198. Please refer #6 in picture.
****Please note, picture shows in listing is just diagram for your reference. This kit include part #6 from the diagram **** This is not a Ingersoll Rand product but it is compatible with Ingersoll Rand Parts. This is a Private-label product.