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The Supertech titanium retainer for Mini R53 is specified for use with spring HM1007BE and a 6-degree seat; this single retainer matches that spring geometry. It replaces the stock retainer to maintain proper spring seating and containment during spring or valve service. Use it when servicing or rebuilding the R53 valvetrain where HM1007BE springs are installed.
Supertech Titanium Retainer for Mini R53 Spring HM1007BE 6 Degree
