ARP Head Stud Kit - BMW S14 F21 M135I AST springs deliver a consistent

AST springs deliver a consistent and dependable enhancement aligned with professional automotive expectations

Kit contents: DP2914 + D553

Less prone to warping & cracking

6 Series (E64) & 7 more

Is a CPL filter worth it for smartphone photography

ARP Head Stud Kit - BMW S14 F21 M135I AST springs deliver a consistentStrengthen the bottom end of your BMW S14 engine with the ARP Head Stud Kit BMW S14, delivering far greater clamping force and sealing than the factory fasteners. Engineered by ARP (Automotive Racing Products), this head stud kit is built to the standards demanded by high performance and motorsport BMW builds. Key Features Designed for BMW S14 engine Significantly increased clamping force over OEM fasteners Improved head gasket sealing and cylinder