The 32496564 low pressure piston is used on the Ingersoll Rand 2475 reciprocating air compressor pump. The piston connects to the rod on the low pressure side of the pump. This is approximately 4" in diameter and is larger than the high pressure side.
32496564 does include the pin and two retaining lock rings. This does NOT include rings - if you are also in need of rings for the 2475 compressor we suggest purchasing the 32301517 ring and gasket kit.