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This DeatschWerks side‑feed injector O‑ring kit provides replacement O‑rings specifically for Subaru side‑feed injectors and explicitly fits 2004–2006 USDM STI models. It's intended as a correct‑fit seal service kit for side‑feed injectors, offering the necessary top and bottom O‑rings without altering injector fitment, to help maintain proper fuel sealing on supported Subaru applications.
DeatschWerks Subaru Side Feed Injector O-Ring Kit (4 x Top Ring 4 x Bottom Ring)
