After the initial tightening

68 A/R with 3 5/8" OD (outer diameter) V-Band discharge

Various enrichment options (crank

these connecting rods are an essential upgrade for reliable performance

Stronger than OEM bolts for improved head gasket sealing

5150 AutoSport Head Gasket & Head Stud Kit, BMW N54 228i After the initial tighteningPerformance Head Gasket & Head Stud Kit for BMW N54 Engines This Performance Head Gasket & Head Stud Kit is designed for BMW N54B30 turbocharged inline six engines, ideal for high performance applications. Head Gasket Options OEM Head GasketGenuine BMW replacement gasket, perfect for high horsepower and high boost setups. Recommended for engines exceeding 800+ horsepower; requires O ringing the cylinder head or block. Features a 0. 060" thickness for