ETS Blow Off Valve Pipe 2015-2021 Subaru STI Kelli The adapter includes an extra

The adapter includes an extra sandwich plate to suit the top-mount oil filter

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4x Intercooler Pipes

2014-2018 Subaru Forester XT CVT

ETS Blow Off Valve Pipe 2015-2021 Subaru STI Kelli The adapter includes an extraFitment Information: 2015 2021 Subaru STI Features: Includes AIT Bung + Plug Does NOT include BOV (Sold Separately) Requires ETS Piping kit This is a replacement blow off valve pipe for a 15+ Subaru STI, it will allow you to swap out for a different BOV from another manufacturer.