BMW N20 De-Cat Front Pipe by Wagner for F-Series 125i 220i 228i 320i 328i 420i 428i

Give your turbocharged N20 engine the flow it deserves with this precision Wagner de-cat front section. Crafted from corrosion resistant 1.4301 stainless steel and engineered for maximum gas velocity, this straight-through turbo outlet reduces back pressure, lowers thermal load at the turbine and delivers sharper response and stronger mid range. It is a direct swap for the factory front pipe and replaces BMW OE reference 18327645666 on F-Series petrol models from 10/2012 onward.

Performance focused construction

• Premium 1.4301 stainless steel pipework for durability and heat resistance
• CAD developed high-flow design with no main catalyst for unrestricted exhaust flow
• Two lambda sensor bosses O2 ports for straightforward sensor placement
• Direct fit using original mounting points and hardware for a hassle free install
• Reduces turbine inlet pressure to help control exhaust gas temperatures
• Connection diameter 105 mm
• Tube diameter 76 mm

We have installed this Wagner unit on customer N20 builds and been consistently impressed with the fit, finish and results. If you are chasing a freer revving feel, improved spool and a more purposeful tone, this high-flow front pipe is the proven choice.

Vehicle applications

• BMW 125i F20 F21
• BMW 220i F22 F23
• BMW 228i F22 F23
• BMW 320i and 320i xDrive F30 F31 F34
• BMW 328i and 328i xDrive F30 F31 F34
• BMW 420i F32 F33
• BMW 428i and 428i xDrive F32 F33

Suitable for models built from 10/2012. Direct replacement for OE part number 18327645666.

Part number

Wagner reference: 500001016

Installation and fitting

Professional installation recommended. MJ Modifications offers fitting in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Compatibility check

We verify fitment before dispatch. Please add your UK registration or the last 7 of your VIN at checkout.

Important information

• For off road or motorsport use unless a suitable catalyst is retained elsewhere in the system
• Removing catalytic converters will generally render a vehicle unsuitable for public road use
• ECU calibration may be required to prevent warning lights

Manufacturer and warranty

Manufactured by Wagner and supplied with a 2 year manufacturer warranty.

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