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The AST Lowering Springs are meticulously engineered to enhance your BMW 5 Series (520i/530i/518D/520D
Secure Installation: Each stud features an internal 6mm Allen drive for precise installation
Adheres to the OEM gear selector cover using 3M double-sided tape
1x Expansion tank cap
Genuine Gloss Carbon Fibre top and bottom
ARP Main Stud Kit - BMW M40 / M42 / M44 G20 | G21 (2018+) SUSPENSION The AST Lowering Springs areStrengthen the bottom end of your BMW M40 M42 M44 engines with the ARP Main Stud Kit BMW M40 M42 M44, delivering far greater clamping force and sealing than the factory fasteners. Engineered by ARP (Automotive Racing Products), this main stud kit is built to the standards demanded by high performance and motorsport BMW builds. Key Features Designed for BMW M40 M42 M44 engines Significantly increased clamping force over OEM fasteners Improved main cap