Turbo Rebuild Kit for SUBARU WRX STI Bonded Mitsubishi TD04L-13T 49337-04100 Turbocharger Fit with SUBARU WRX STI bonded Mitsubishi TD04L-13T 49377-04100 turbocharger This kit is for superback compressor wheel Total 15 pcs in plastic shell clamp package, not included instruction Professional installation is highly recommended Make sure turbo model# before you place order