BMW F20, F21 114d, 116d, 118d/dx, 120d/dx, 125d N47N, N47S1 +CATALYST models have the following connections:

• one lambda sensor socket
• two temperature sensor outputs
• one pressure sensor output

The downpipe is suitable for models complying with the EURO 5 emission standard (one pipe for connecting the pressure sensor). Downpipe no. 117101 is available for EURO 6 models (two pipes for connecting the pressure sensor).
The downpipe is made entirely of stainless steel. Every part of the product is manufactured using CNC technology. The product has a 24-month manufacturer's warranty.

Downpipe BMW F20, F21 114d, 116d, 118d/dx, 120d/dx, 125d N47N, N47S1 +CATALYTIC CONVERTER

OE numbers:

• 18308508993
• 18308508994
• 18307823496

Pipe diameter- 63.5mm
Pipe diameter at the connection point with the middle section- 61 mm

What does Downpipe Decat, Euro 3, Euro 4 and Euro 5 – 200CPI mean?

Deca= No catalytic converter at all (more power, not street/road legal).

Euro 3 / Euro 4 / Euro 5= Emission standards that the catalytic converter meets. The higher the number, the cleaner the emissions.

200CPI= "Cells Per Inch" i.e. the cell density in the catalyst. 200CPI is flow-friendly, but cleans less than, for example, 400CPI.

Downpipe Decat

No catalyst – maximum flow and power.
Not street or road legal.

Downpipe Euro 3 – 200CPI

Downpipe equipped with a sports exhaust system with light emission standards.
Better flow – not always roadworthy.

Downpipe Euro 4 – 200CPI

Balance between emissions and power.
Suitable for street and light tuning.

Downpipe Euro 5 – 200CPI

The strictest emission standard – but still flow-friendly.
Suitable for newer cars and responsible tuning.