Audi A6/A7/Q5 Diesel Exhaust Pipe / Cat 4G0254400B

OEM Part #: 4G0-254-400-B (4G0254400B)

This page covers one exact OEM part number. Every unit we stocked has sold.

We may be able to get another

Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:

Other Exhaust Pipe that may fit your vehicle

Exhaust Muffler 4G0253612L

Exhaust Muffler

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Fits 2013–2015 Audi A6
OEM: 4G0253612L
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Exhaust Pipe Tip 4G0253825N

Exhaust Pipe Tip

Starting at $58.99
Fits 2016–2018 Audi A6 / A7
OEM: 4G0253825N
Used Left
Exhaust Pipe Tip 4G0253825P

Exhaust Pipe Tip

Starting at $57.99
Fits 2016–2018 Audi A6 / A7
OEM: 4G0253825P
Used Right
  • Genuine OEM — real photos
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Replace your worn or malfunctioning diesel exhaust pipe with this authentic OEM catalytic converter (Part Number: 4G0254400B) sourced from a qualified salvage vehicle. Designed for optimal performance, this part fits 2014-2016 Audi A6 Quattro, A7 Quattro, and Q5 models equipped with 3.0L TDI engines. Proper function of the diesel exhaust pipe is critical, as it helps to reduce emissions and ensures efficient exhaust flow. If your vehicle is experiencing issues such as reduced power, increased exhaust noise, or check engine lights related to the emission system, this genuine part resolves those concerns, restoring your vehicle to optimal condition.

Specifications

Specifications for Diesel Exhaust Pipe / Cat 4G0254400B
Fits Vehicle ModelA6, A7, Q5
Fits Vehicle MakeAudi
OEM Part No4G0-254-400-B (4G0254400B)
Compatible OEM Part No 4G0-254-400-BX
CategoryExhaust

Compatible Vehicles

Fits 8 vehicle configurations across 1 make, 2014-2016.

Check your specific vehicle before ordering. This list shows year, make, and model. Some years have multiple trims or engines that use different parts, and individual listings may have additional fitment notes (e.g. “with sunroof only”). Review the full variant list below, or message us with your VIN and we’ll confirm the match.

Audi

  • A6 2014-2016 · 3 variants 2 with notes
  • A7 2014-2016 · 2 variants 1 with note
  • Q5 2014-2016 · 3 variants
View all 8 vehicle configurations — 3 with fitment notes
Full vehicle fitment list for Diesel Exhaust Pipe / Cat 4G0254400B
Year Make Model Trim Engine Note
2014 Audi A6 Quattro Sedan 3.0L V6 Diesel Turbo For Vehicles with Engine Code(s) CPNB
2014 Audi A7 Quattro Hatchback 3.0L V6 Diesel Turbo For Vehicles with Engine Code(s) CPNB
2014 Audi Q5 SUV 3.0L V6 Diesel Turbo
2015 Audi A6 Quattro Sedan 3.0L V6 Diesel Turbo For Vehicles with Engine Code(s) CPNB
2015 Audi Q5 SUV 3.0L V6 Diesel Turbo
2016 Audi A6 Quattro Sedan 3.0L V6 Diesel Turbo
2016 Audi A7 Quattro Hatchback 3.0L V6 Diesel Turbo
2016 Audi Q5 SUV 3.0L V6 Diesel Turbo

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Asking about: Diesel Exhaust Pipe / Cat 4G0254400B · OEM #4G0254400B