Downpipe BMW E90, E91 318d, 320d M47N2 (Euro 4)

Premium downpipe designed for BMW 3 Series models equipped with the M47N2 (M47TU2) diesel engine. Built from durable stainless steel, this component improves exhaust flow and helps reduce backpressure, supporting smoother turbo operation and a more responsive driving experience.

Important:
This version features a 61 mm connection to the factory exhaust system and is suitable for vehicles with the Euro 4 emission standard (commonly found in E90/E91 models).
A less common Euro 3 variant with a 55 mm outlet is also available. Please confirm your vehicle’s emission standard before ordering or contact us for assistance.

Compatible Vehicles

BMW 3 Series (2005–2007):
E90 / E91

• 318d (90 kW / 122 hp) – M47N2

• 320d (120 kW / 163 hp) – M47N2

If your exact model is not listed, check our other products or reach out to us for guidance.

Technical Specifications

• Manufactured from high-quality SS304 stainless steel

• Main pipe diameter: 2.5″ (63.5 mm)

• Turbo flange diameter: 83 mm

• Connection to stock exhaust: 61 mm

• 1 port for lambda (oxygen) sensor

• 1 port for EGT (exhaust gas temperature) sensor

• 1 fitting for pressure sensor hose

OE reference numbers:
18 30 7 798 307
18307798307
7798307
18 30 7 797 294
18307797294
7797294
18 30 7 797 295
18307797295
7797295
18 30 7 797 296
18307797296
7797296

Engineered for precise fitment and long-term durability, making it a reliable upgrade for your BMW diesel setup.