BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)

BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)

£145.99
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BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
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  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
  • BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)
BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)

BMW 4 Series N47N Decat Downpipe (F3X) (Euro 5)

£145.99
Product Description

BMW N47N / N47S1 Stainless Steel Decat Downpipe

UK Manufactured | 304 Stainless Steel | 2.5" Diameter | Direct Bolt-On Fitment

Handcrafted in the UK by our experienced team, our BMW N47N / N47S1 decat downpipe is designed to improve exhaust flow and support increased performance in compatible BMW diesel vehicles.

Manufactured from high-quality 304-grade stainless steel, the downpipe features a 2.5-inch diameter construction and is designed to replace the factory catalytic converter (CAT) and Diesel Particulate Filter (DPF) for dedicated off-road and motorsport applications.

Designed as a direct bolt-on replacement, the downpipe retains the factory exhaust outlet connection, allowing it to connect directly to the original exhaust system.

Key Features

  • Handmade in the UK – Custom manufactured by our experienced team.
  • 304 Stainless Steel Construction – High-quality material for strength, durability and corrosion resistance.
  • 2.5" Diameter Pipework – Designed to improve exhaust gas flow.
  • Improved Exhaust Flow – Reduced exhaust restriction to support performance gains in suitable motorsport applications.
  • CAT & DPF Delete – Replaces the factory catalytic converter and Diesel Particulate Filter.
  • Direct Bolt-On Installation – Designed to connect to the original exhaust system.
  • Standard Exhaust Compatibility – No aftermarket exhaust system required.
Vehicle Compatibility

Vehicle Compatibility

Designed for compatible BMW models equipped with the N47N and N47S1 diesel engines, including applicable 14d, 16d, 18d, 20d and 25d variants.

The following BMW models are listed as compatible. Please check your specific engine and exhaust configuration before ordering.

BMW 1 Series

  • F20 114d 5-Door Hatchback
  • F20 116d 5-Door Hatchback
  • F20 116d EfficientDynamics 5-Door Hatchback
  • F20 118d 5-Door Hatchback
  • F20 118d xDrive 5-Door Hatchback
  • F20 120d 5-Door Hatchback
  • F20 120d xDrive 5-Door Hatchback
  • F20 125d 5-Door Hatchback
  • F20 LCI 114d 5-Door Hatchback
  • F21 114d 3-Door Hatchback
  • F21 116d 3-Door Hatchback
  • F21 116d EfficientDynamics 3-Door Hatchback
  • F21 118d 3-Door Hatchback
  • F21 118d xDrive 3-Door Hatchback
  • F21 120d 3-Door Hatchback
  • F21 120d xDrive 3-Door Hatchback
  • F21 125d 3-Door Hatchback
  • F21 LCI 114d 3-Door Hatchback

BMW 2 Series

  • F22 218d Coupé
  • F22 220d Coupé
  • F22 225d Coupé

BMW 3 Series

  • F30 316d Saloon
  • F30 318d Saloon
  • F30 318d xDrive Saloon
  • F30 320d EfficientDynamics Saloon
  • F30 320d Saloon
  • F30 320d xDrive Saloon
  • F30 325d Saloon
  • F30 LCI 320d Saloon
  • F30 LCI 325d Saloon
  • F31 316d Touring
  • F31 318d Touring
  • F31 318d xDrive Touring
  • F31 320d EfficientDynamics Touring
  • F31 320d Touring
  • F31 320d xDrive Touring
  • F31 325d Touring
  • F31 LCI 320d Touring
  • F31 LCI 325d Touring
  • F34 318d Gran Turismo
  • F34 320d Gran Turismo
  • F34 320d Gran Turismo (from 03/2014)
  • F34 320d Gran Turismo (until 03/2013)
  • F34 320d xDrive Gran Turismo

BMW 4 Series

  • F32 420d Coupé
  • F32 420d xDrive Coupé
  • F32 420d xDrive Coupé (until 03/2014)
  • F32 425d Coupé
  • F33 425d Convertible

BMW 5 Series

  • F10 520d EfficientDynamics Saloon (from 09/2011)
  • F10 520d Saloon
  • F10 525d Saloon (from 09/2011)
  • F10 LCI 520d Saloon
  • F10 LCI 525d Saloon
  • F11 520d Touring
  • F11 525d Touring (from 09/2011)
  • F11 LCI 520d Touring

BMW X Series

  • X3 F25 18d (from 09/2011)
  • X3 F25 20d xDrive

Unsure about compatibility? Contact us before ordering with your vehicle's model, year and engine specification, and we'll be happy to help confirm fitment.
Installation Information

Installation Information

This downpipe is designed as a direct bolt-on replacement, retaining the factory exhaust outlet connection.

Please note the following before installation:

  • Factory Exhaust Connection – Designed to connect directly to the standard exhaust system.
  • Turbo-to-Downpipe Clamp – The original turbo clamp can become heavily corroded over time and may break during removal. Replacement clamps are available separately from our website.
  • Engine Compatibility – Please confirm your vehicle's engine code and existing exhaust configuration before ordering, particularly on models available with multiple diesel engine variants.
  • ECU Software Requirements – ECU software modifications may be required following installation to prevent engine management warning lights and running issues. Any modifications must be appropriate for the vehicle's intended off-road or motorsport use and comply with applicable regulations.

Professional installation is recommended.
Important! - Disclaimer

IMPORTANT – OFF-ROAD & MOTORSPORT USE ONLY

All Groovy Stance decat downpipes are manufactured and sold strictly for off-road, motorsport and competition use only. They are not approved for use on public roads.

This product is designed to replace factory emissions-control equipment, including the Diesel Particulate Filter (DPF) and/or catalytic converter, where applicable.

Removing or modifying emissions-control equipment can make a vehicle non-compliant with UK road-vehicle emissions regulations. A vehicle with required emissions-control equipment removed will fail its UK MOT inspection. Similar restrictions may apply in other countries.

By purchasing and/or installing this product, the customer acknowledges that:

  • This product is supplied exclusively for off-road, motorsport or competition applications.
  • The customer is responsible for ensuring their vehicle complies with all applicable laws and regulations.
  • The vehicle must not be operated on public roads in a configuration that breaches emissions or roadworthiness legislation.
  • Groovy Stance is not responsible for MOT or inspection failures, fines, penalties or other consequences arising from unlawful installation or use, to the extent permitted by law.
  • The vehicle must be returned to a road-legal, emissions-compliant configuration before being used on public roads or presented for a roadworthiness inspection.

Purchasing this product confirms your understanding that it is an off-road/motorsport component and is not supplied as a road-legal replacement for factory emissions-control equipment.
Shipping & Delivery

All of our downpipes are manufactured to order here in the UK. We aim to manufacture and dispatch orders within 1 working day, although additional time may be required during public holidays, promotional events or periods of high demand.

All orders are shipped using a 24-hour or 48-hour delivery service, depending on the option selected at checkout.

We offer worldwide shipping, with delivery costs calculated at checkout. If your country isn't listed, please contact us for a bespoke shipping quotation.

For an accurate lead time before ordering, please get in touch.