BMW ARP Main Stud Kits Engine:S50B30 / S50B32 EURO While both the 11mm L19

While both the 11mm L19 and 10mm Custom Age 625+ head studs are high-quality options made to ARP standards

The lightweight titanium retainers boost durability and reduce valvetrain mass

CAT Cams offers camshaft profiles to meet the demands of every application

When it comes to choosing the right brand for replacement main bearings

BMW ARP Main Stud Kits Engine:S50B30 / S50B32 EURO While both the 11mm L19Upgrading your engine for optimal performance and reliability requires top quality components. OEM hardware can potentially create weaknesses that can hinder your engine's full potential, especially if you're supercharging or turbocharging it. That's why we trust ARP, the world leader in fastener technology, for our engine upgrades. ARP Main Studs offer several benefits, including eliminating main cap walk and protecting engine block threads. These