The 5150 AutoSport Pro-Xtreme Connecting Rods

1989-1991      E30     320is [Portugal and Italy]

using aerospace-grade alloys such as EV8-Z18 for maximum tensile strength

the clamping force on the cylinder head is increased

BMW ARP Main Stud Kits Engine:S38 B35/B36/ B38 The 5150 AutoSport Pro-Xtreme ConnectingUpgrading 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