High-quality Catless Downpipe for BMW F07, F10, F11 518d, 520d, 520dX, 525d, 525dX models with N47N and N47S1 engines. Exclusively crafted by KPerformance, our full 3″ (76mm) downpipe maintains a bolt-on fitment while maximizing exhaust flow and minimizing backpressure, resulting in sharper throttle response, increased performance, and a deeper, more aggressive exhaust tone. Important: This downpipe is designed to fit cars with Euro 5 emission standard. We also have Euro 6 version, so please verify your car’s emission standard before buying or send us your VIN code, and we will check it for you. FITS THESE BMW MODELS: BMW 5 Series: F07, F10, F11 [2010-2015] 518d (105kw / 143hp) – N47N 520d (135kw / 184hp) – N47N 520d ED (135kw / 184hp) – N47N 520dX (135kw / 184hp) – N47N 525d (160kw / 218hp) – N47S1 525dX (160kw / 218hp) – N47S1 Note: If your model is not listed here, look for it under another product. If you cannot find your model anywhere, contact us for assistance. SPECIFICATION: • Direct bolt-on fitment • Stainless steel (SS304, 1.5mm) • Downpipe diameter: 3″ (76mm) • Flange to turbine diameter: 83mm • Connection to exhaust (stock): 61mm • One socket for lambda (oxygen) sensor • Two sockets for temperature (EGT) sensors • One pipe for the pressure sensor hose OEM reference part numbers: 18 30 8 510 385, 18308510385, 8510385, 18 30 8 508 993, 18308508993, 8508993, 18 30 7 823 496, 18307823496, 7823496, 18 30 8 515 604, 18308515604, 8515604