Description: The Subaru Engine VVT Solenoid (10921AA231) is a factory-spec oil control valve for 2011–2025 Subaru models, covering Forester, Impreza, WRX 2.5L, Legacy/Outback, XV Crosstrek, and BRZ (2013–2014). It regulates oil pressure to the variable valve timing mechanism, optimizing intake cam timing for improved power and fuel efficiency. A genuine Subaru OEM solenoid built to original flow rate and connector specifications. Currently on backorder.