Group, What Hank is saying is right on. The only thing I would mention further is that this is a rebuilt unit not new. New is available for a few dollars more. I have had trouble in the past with rebuilt Master slave cyl not holding up. This may not happen with Fernco and I am in no way derating the product. I just want you to know it's rebuilt. John Hervey << Go to Autozone and get Fernco part number M52329 - it's the same master cylinder, only cheaper (that is, if you choose not to get one from the D vendors). It will come with two little hoses and adapters for bench bleeding the cylinder before installation. Do NOT skip this step. Good instructions are included with the Fernco part. There is also a core-charge, so be sure to return your old cylinder. >>