High-quality downpipe for BMW G30, G31 530d, 530dX, 540dX models with B57 engine. Exclusively designed by KPerformance, our full 4″ 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. Fits Euro 6 vehicles with a 2-bolt flange-to-exhaust setup and a factory AdBlue/SCR system, which is bypassed when our pipe is installed. FITS THESE BMW MODELS: BMW 5 Series: G30, G31 [2017-2020] 530d (195kw / 265hp) – B57 530dX (195kw / 265hp) – B57 540dX (235kw / 320hp) – B57 Not compatible with LCI B57P or B57R engines equipped with the Mild Hybrid (eBoost) system. 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: 4″ (101.6mm) • Flange to turbine diameter: 105mm • Connection to exhaust (stock): 4″ (101.6mm) • Removes OEM AdBlue (SCR) inlet flange • Two sockets for lambda (oxygen) sensors • Two sockets for temperature (EGT) sensors • Two pipes for the pressure sensor hoses OE reference numbers: 18 32 8 580 684, 18328580684, 8580684, 18 32 8 580 685, 18328580685, 8580685, 8581854, 8581857, 8581880, 8581883, 858176703, 12100010, 18945311
