This Brian Crower titanium retainer is made for Subaru EJ205 (WRX) and EJ257 (STi) cylinder heads. As a valve spring retainer, it secures spring assembly components in high-performance valve trains. Titanium construction is specified in the source text; choose this retainer when matching retainers to EJ205/EJ257 engines to maintain correct fit and spring seating for those Subaru applications.
Brian Crower Subaru EJ205-WRX / EJ257-STi Titanium Retainer