Backplate Adapter Ring for T04S FRAME Compressor Housing, for GT/GTX Turbos

T04S Frame Compressor Housing Backplate adapter ring.
Goes between the CHRA and the Compressor Housing
Standard on the GT/GTX35 Series Turbos but also can be a "larger" upgrade option on other smaller turbo models such as GT/GTX30 or GT/GTX28 that are running a larger than stock compressor housing. Please always match the compressor housing "frame size" to the appropriate back plate adapter ring.