For E39 2000-2003 ,E39 2000-2003 ,E46 Ci 2001-2006 ,E46 Ci2001-2006 , 25i 1999-2002 , 30i 1999-2002 ,Only Fit For M54 Engine Replacement Part Number: 13327503677 Crafted from aluminum, this intake Hose Connector connector can withstand high temperatures, corrosion, and wear, guaranteeing good performances Suitable for enthusiasts and owners seeking to maintain stable engine performances and a superior driving experience Whether you are navigating city streets or pushing limits on the racetrack, this intake boot provide consistent air supply, boosting engine power and response