Engine Piston Rings Set 11257506222 FOR Sedan Coupe Convertible Touring 330i X3 X5 Z3 Z4 M54 3.0 OEM Reference Numbers: 11257506222, 11257506252 Fits: - 3 Series (E46) 330i 2001–2005 M54 B30 (306S3) - 3 Series (E46) 330i Rear-Wheel Drive 2000–2005 M54 B30 (306S3) - 3 Series (E46) 330xi 2000–2005 M54 B30 (306S3) - 3 Series Convertible (E46) 330Ci 2000–2006 M54 B30 (306S3) - 3 Series Coupe (E46) 330Ci 2000–2006 M54 B30 (306S3) - 3 Series Coupe (E46) 330xi 2000–2006 M54 B30 (306S3) - 3 Series Touring (E46) 330i 2000–2005 M54 B30 (306S3) - 3 Series Touring (E46) 330xi 2000–2005 M54 B30 (306S3) - 5 Series (E39) 530i 2000–2003 M54 B30 (306S3) - 5 Series (E60) 530i 2001–2005 M54 B30 (306S3) - 5 Series Touring (E39) 530i 2000–2003 M54 B30 (306S3) - 7 Series (E65, E66, E67) 730i, Li 2003–2008 M54 B30 (306S3) - X3 (E83) 3.0i xDrive 2003–2006 M54 B30 (306S3) - X5 (E53) 3.0i 2000–2006 M54 B30 (306S3) - Z3 Coupe (E36) 3.0i 2000–2003 M54 B30 (306S3) - Z3 Roadster (E36) 3.0i 2000–2003 M54 B30 (306S3) - Z4 Roadster (E85) 3.0i 2002–2005 M54 B30 (306S3) Installation: Remove the cylinder head and related components from the engine.Take out the piston and connecting rod assembly from the cylinder bore.Remove the old piston rings.Clean the piston ring grooves completely.Install the piston rings into the correct grooves following manufacturer specifications for orientation and gap positioning.Reinstall the piston and connecting rod assembly onto the crankshaft.Reassemble all previously removed engine parts.Notice: This replacement item is produced by an independent supplier.All brand and model mentions are for compatibility purposes only.