This Supertech titanium retainer is specified for SPR-TS1015 inner spring applications, noted as SPR-TS IN2, and is compatible with Subaru EJ20 and EJ25 engines. It provides the correct retention for inner spring assemblies used in those Subaru engine families, making it suitable for head rebuilds or valvetrain maintenance where SPR-TS1015 inner retainers are required for EJ20/EJ25 applications.
Supertech Titanium Retainer for SPR-TS1015 (Inner SPR-TS IN2) Subaru EJ20/EJ25