Feature●Complete 5 Piece Breather Hose Kit 5 Piece Crankcase Vent Valve Breather Hose Kit For BMW E46 E39 E60 320i 323i 325 325i 325ci 328i 330i 330ci 330xi 525i 528i●3 x Breather Hoses - OE NO. 11611432559, 11157532649 & 11617504536●1 x Crankcase Vent Valve - OE NO. 11617501566;1 x Oil Separator Hose - OE NO. 11617504535●Fits for the Following Vehicles: for 2001-2005 BMW 320i, 2000 BMW 323Ci, 2000 BMW 323i, 2001-2002 BMW 325Ci, 2003-2005 BMW 325Ci M54, 2006 BMW 325Ci, 2001-2002 BMW 325i, 2003-2005 BMW 325i M54, 2000 BMW 328Ci, 2000 BMW 328i, 2001-2006 BMW 330Ci, 2001-2005 BMW 330i, 2001-2005 BMW 330xi 325xi, 2001-2005 BMW 525i, 2000 BMW 528i, 2001-2005 BMW 530i, 2004-2006 BMW X3, 2000 BMW Z3 2.8 L6, 2000-2002 BMW Z3 2.5 L6, 2001-2002 BMW Z3 3.0 L6, 2003-2005 BMW Z4.●Replaces Part# - 11617501566, 11617504535, 11617504536, 11611432559, 11157532649 - This includes the Crankcase Pressure Regulator Valve, Upper Oil Separator Vent Tube, Crankcase Vent Return Pipe, Crankcase Ventilation Hose (Oil separator to valve cover), Crankcase Ventilation Hose (Oil separator to dipstick tube)●Fit, Quality, Finish - This PCV Hose Kit is constructed of a high temperature plastic that will last longer compared to the factory hoses. While this is NOT a genuine OEM part, this air intake hose is modeled after the factory hoses for an exact fit on your .Description The positive crankcase ventilation or PCV system vents air from inside your engine caused by the engines operation. Due to emissions requirements this air must be recirculated back into the engine. In order to recirculate this air into the engine a series of hoses and valves are needed. The crank case valve and hoses commonly crack overtime and lead to a check engine light (CEL), poor fuel economy, and sometimes