ARP Head Stud Kit, BMW M50 M52 S50 S52 11mm Oversized M54 B25 perfect for track days or

perfect for track days or rally use

CP-Carrillo pistons are the best choice for any S14 2

This is especially important for high-performance

2015-2016     F30/F31     340i

specifically for the N54B30 engine

ARP Head Stud Kit, BMW M50 M52 S50 S52 11mm Oversized M54 B25 perfect for track days orThis ARP oversized 11mm head stud kit is designed to replace the 10mm head studs in M50 M52 S50 S52 engines for those who want to push the limits of their high horsepower turbo engines. However, it's a MUST to have the block drilled and tapped professionally prior to installation. These head studs are a great choice for increasing boost levels without the cylinder head lifting. While both the 11mm L19 and 10mm Custom Age 625+ head studs are high