GT15-22 GTB15-22 compressor end piston ring seal 10mm
10mm compressor end piston ring. (Some early GT15 turbos used a 9.3mm thin section piston ring, these are also available). If the turbo has failed and damaged the bore of the seal plate / back plate this should be replaced also. Simply replacing the seal will not provide a complete repair.
If you need a complete repair kit check out the Rebuild Kits section.