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The Supertech manganese bronze exhaust valve guide for Toyota FR-S and Subaru BRZ with the FA20D engine accepts a 5.5mm stem and restores precise valve alignment for reliable operation. It’s a direct replacement option that helps control oil flow and seating geometry during rebuilds or repairs. Intended for FR‑S/BRZ FA20D valvetrain service.
Supertech Toyota FRS / Subaru BRZ FA20D Manganese Bronze Exhaust Valve Guide 5.5mm Stem
