Take exact measurements of the cone filter. K&N and AEM make universal replacements that you can use instead.It appeared to me that GM parts has discontinued some of their support of our Kappas. I had a very difficult time finding a replacement air filter for my GMPP CAI. I did find one at Crate Engine earlier this spring but in the future may have difficulty. Does anyone know of an afternmarket filter that fits the GMPP CAI? Good hunting Jayman!