from 4500 cc to 4700 cc

The stock temperature sensor O-ring might not adequately seal if re-installed

and greater tensile strength—perfect for performance enthusiasts and track applications

Dual-Pass Flow Structure Allows the Coolant to Flow Across the Core of the Radiator Two Times Before Exiting the Radiator for the Lowest Outlet Temperature Possible (OEM Style Design)

Stretch M11 bolts to

5150 AutoSport Factory+ Rebuild Kit, BMW M20 Engine:M20B23 from 4500 cc to 4700Please note: All engine modifications should be performed by a qualified professional to ensure a proper and safe installation process and a reliable, optimally performing engine.