IAG Threaded Plugs for FA Cylinder Heads (Set of 8) WRX 15-21 / FR-S / BRZ 13-20| IAG-ENG-2020 Dimensions 42 10 10 Improved copper corrosion protection to

Improved copper corrosion protection to prolong synchro life

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Perrin foam filters can last the life of your vehicle

* This product cannot be installed together with the FRONT BUMPER SKIRT (E2417VC100/500)

IAG Threaded Plugs for FA Cylinder Heads (Set of 8) WRX 15-21 / FR-S / BRZ 13-20| IAG-ENG-2020 Dimensions 42 10 10 Improved copper corrosion protection toProduct Fitment: 2015 2021 Subaru WRX 2013 2020 Subaru BRZ 2013 2016 Scion FR S Prevent catastrophic coolant and oil contamination issues with the IAG FA20 Cylinder Head Threaded Freeze Plug Upgrade. The FA20 engines OEM pressed in freeze plugs are notorious for falling out under heat and pressure, especially in high performance or modified setups. IAG's solution? Replace them with reliable threaded zinc plated plugs that are precision machined and