The Ingersoll Rand 54701099 is the cylinder for the SS5 single stage air compressor. The SS5 was the most popular single stage air compressor that Ingersoll Rand has sold. The cylinder is full cast iron with two holes for the pistons. There are fins on the outside which are used to dissipate heat during the compression process.
This is an OEM part from Ingersoll Rand
97333546
54571617
97333173
20100285
20100277
