Bolster Spring For Bvzi To Rdso Drg. No. Wd-04050-S-02, Alt.-4, Item-5. Other Technical Req Uirements Conforming To Rdso Spec.No.Wd-01 Hls-94, Rev.5 Of December-2024. Material Grade 52Cr4Mo 2V Conforming To Is:3195-1992 With Amendment 1&2. [ Warranty Period: 60 Months After The Date Of Deli Very ] ]