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The Supertech titanium retainer for Nissan SR20 is listed for the SPR-H1020 series and sized for a 6.0mm valve stem; this drop-ship item is intended as a direct replacement. It secures the valve spring and restores correct seating during valvetrain service or rebuilds on SR20 engines that use the SPR-H1020 retainer profile.
Supertech Titanium Retainer for Nissan SR20 SPR-H1020 Series 6.0mm Valve Stem (Drop Ship Only)
