Downpipe BMW F30, F31, F34 316d, 318d, 320d, 325d, 328d N47N, N47S1 (Euro 5)

High-performance catless 3″ (76 mm) downpipe engineered for BMW F3x 3 Series models equipped with N47N and N47S1 diesel engines. Developed by KPerformance, this full-diameter upgrade is designed for precise bolt-on installation while significantly improving exhaust flow. By eliminating restrictions, it helps reduce backpressure, improve turbo efficiency, enhance throttle response, and deliver a deeper, more aggressive exhaust tone.

Important Information

This version is intended for vehicles with the Euro 5 emission standard.
A separate Euro 6 variant is also available. Please confirm your vehicle’s emission classification before ordering, or provide your VIN number and we will verify compatibility for you.

Compatible Vehicles

BMW 3 Series (2012–2015): F30 / F31 / F34

• 316d (85 kW / 116 hp) – N47N

• 318d (100 kW / 136 hp) – N47N

• 318d (105 kW / 143 hp) – N47N

• 318dX (105 kW / 143 hp) – N47N

• 320d EfficientDynamics (120 kW / 163 hp) – N47N

• 320d (135 kW / 184 hp) – N47N

• 320dX (135 kW / 184 hp) – N47N

• 320d PPK (147 kW / 200 hp) – N47N

• 320dX PPK (147 kW / 200 hp) – N47N

• 325d (160 kW / 218 hp) – N47S1

• 328d (134 kW / 182 hp, USA) – N47N

• 328dX (134 kW / 182 hp, USA) – N47N

If your specific variant is not listed, please check our other products or contact us for assistance.

Technical Specifications

• Direct bolt-on fitment

• Manufactured from high-grade SS304 stainless steel (1.5 mm wall thickness)

• Main pipe diameter: 3″ (76 mm)

• Turbo flange diameter: 83 mm

• Connection to factory exhaust system: 61 mm

• 1 port for lambda (oxygen) sensor

• 2 ports for EGT (exhaust gas temperature) sensors

• 1 fitting for pressure sensor hose

OEM reference part numbers:
18 30 8 508 993 / 18308508993 / 8508993
18 30 8 518 894 / 18308518894 / 8518894
18 30 8 576 546 / 18308576546 / 8576546

Designed for durability, precise compatibility, and reliable performance improvements in both stock and tuned applications.