2014 Audi A4 Exhaust | Complete Exhaust System for B8 Chassis Audi A4
Product Overview
- Condition: New OEM-specification components
- Availability: Complete system and individual components available
- Shipping: Free crated freight to all 50 states, 5 to 10 business days
- Engine and drivetrain confirmed before shipping (2.0T or 3.0T, quattro or FrontTrak)
- All components inspected and pressure-tested before packaging
- Stainless steel construction for long service life
- Catalytic converter verified DOT and EPA compliant
- 100% fitment verified before every order ships
- Backed by a 15 day replacement warranty against manufacturing defects
Description
About the 2014 Audi A4 Exhaust
The 2014 Audi A4 is a luxury sedan part of the B8 chassis generation (2009 to 2016), and the exhaust system is one of the most critical maintenance items on the car. The 2014 A4 was offered with two engines: the 2.0T TFSI inline-four (211 hp) and the 3.0T Supercharged V6 (272 hp), both of which use a multi-section exhaust system consisting of an exhaust manifold, catalytic converter, mid-pipe with resonator, muffler, and tailpipe. Replacing one or all of these components is a routine maintenance and performance task on a 10-plus year old A4.
Why 2014 A4 Owners Replace the Exhaust
The most common triggers for an exhaust replacement on a 2014 A4 are: failed catalytic converter (causing P0420 or P0430 codes), rusted-through muffler or mid-pipe (typical on cars 7-plus years old in salt-belt states), broken hangers from age, leaks at flange connections, or simply a desire to upgrade to a sportier sound. Aftermarket cat-back and axle-back exhausts also remain popular for the modest horsepower gain (5 to 15 hp typical) and the more aggressive exhaust note they deliver.
Cat-Back vs Axle-Back vs Full Exhaust
| Option | Description |
|---|---|
| Cat-Back System | Replaces everything from the catalytic converter back. Includes mid-pipe, resonator, muffler, and tailpipe. The most common upgrade choice. |
| Axle-Back System | Replaces only from the rear axle back. Just the muffler and tailpipe. Less expensive, easier install, smaller sound change. |
| Full Exhaust | Replaces everything from the engine back, including downpipe and catalytic converter. Required when the cat is failed. |
Things to Confirm Before Ordering
- Engine: 2.0T TFSI or 3.0T Supercharged V6
- Drivetrain: quattro (AWD) or FrontTrak (FWD)
- Body style: Sedan, Avant (wagon), or Allroad
- Component scope: complete system, cat-back only, axle-back only, or individual part replacement
- Reason for replacement: corrosion, cat failure, or performance upgrade
What Ships and What Does Not
| Item | Details |
|---|---|
| INCLUDED | The exhaust system you order: complete system (manifold-back), cat-back (catalytic converter to tailpipe), axle-back (muffler and tailpipe), or individual component. New gaskets and clamps included. |
| NOT INCLUDED | Heat shields (sometimes included, varies by configuration), engine mounts, oxygen sensors (sold separately), exhaust hangers (typically reuses car’s hardware), tools. |
| Tools You Need | Standard hand tools, oxygen sensor socket, penetrating oil, jack and stands or lift, exhaust hanger removal tool, torque wrench. |
Direct-Fit Vehicle Applications
The 2014 Audi A4 exhaust system is compatible with the following:
| Vehicle | Compatibility |
|---|---|
| 2014 Audi A4 Premium 2.0T quattro | Sedan, single tailpipe configuration |
| 2014 Audi A4 Premium Plus 2.0T quattro | Sedan |
| 2014 Audi A4 Prestige 2.0T quattro | Sedan |
| 2014 Audi A4 2.0T FrontTrak (FWD) | Sedan, FWD-specific exhaust routing |
| 2014 Audi A4 Avant 2.0T quattro | Wagon, longer mid-pipe |
| 2014 Audi A4 Allroad 2.0T quattro | Higher-clearance Allroad-specific configuration |
| 2014 Audi S4 3.0T Supercharged | Different exhaust, see our 2013 Audi S4 Exhaust page |
Cross-compatible years (B8 chassis): 2009 to 2016 A4 share the same exhaust geometry within engine and drivetrain combinations. Tell us your year and we confirm fit.
Quality Control Workflow
This is a new 2014 Audi A4 exhaust system in OEM specification. Quality control includes:
- Stainless steel weld integrity inspection at every joint
- Flange flatness verification on manifold and mid-pipe connections
- Catalytic converter substrate inspection (no cracks or melting)
- Muffler internal baffle integrity check
- Tip alignment and chrome finish inspection
- Pressure test on completed assembly before packaging
This is a new exhaust system, not used. We do not sell used exhausts. New systems only, in OEM-equivalent quality.
Why Buy From Part Nests
- New OEM-specification 2014 Audi A4 exhaust system from established manufacturers
- Engine (2.0T or 3.0T) and drivetrain (quattro or FrontTrak) confirmed for your specific A4
- Component scope (cat-back, axle-back, full system) matched to your need
- All components inspected and pressure-tested before shipping
- Free crated freight to all 50 states, no hidden surcharges
- 15 day replacement warranty on manufacturing defects
- Catalytic converter verified DOT and EPA compliant
- Call (240) 306-7051 to speak with someone who can match your VIN to the correct exhaust geometry for engine, drivetrain, body style, and component scope
Additional information
| application | 2014 Audi A4 (B8 chassis) |
|---|---|
| engine-compatibility | 2.0T TFSI (211 hp), 3.0T Supercharged V6 (272 hp) |
| drivetrain-coverage | quattro AWD and FrontTrak FWD |
| body-styles | Allroad, Avant, Sedan |
| configurations | axle-back, cat-back, Complete system, individual components |
| material | Stainless steel construction |
| tip-style | Single or dual chrome (varies by trim) |
| dot-compliance | EPA-approved catalytic converter where applicable, Yes |
| performance-benefit | modest horsepower and torque improvement, Reduced backpressure |
| sound-profile | performance options available, Refined luxury tone (stock) |
| service-life | 10+ years with proper maintenance and salt-belt protection |
| price | $1, 199.00 (complete system) |
Cat-back replaces everything from the catalytic converter back: mid-pipe, resonator, muffler, and tailpipe. The most common upgrade choice. Axle-back replaces only from the rear axle back: just the muffler and tailpipe. Less expensive, easier install, smaller sound change. Full exhaust replaces everything from the engine back, including downpipe and catalytic converter. Required when the cat is failed.
Yes within the same engine and drivetrain combination. The 2009 to 2016 A4 (B8 chassis) shares the same exhaust geometry within engine and drivetrain combinations. A 2014 quattro 2.0T cat-back fits a 2010 quattro 2.0T. We confirm year and configuration on every order.
Catalyst efficiency below threshold. These codes indicate the rear O2 sensor is reading a similar oxygen content to the front O2 sensor, meaning the catalytic converter is not converting exhaust gases efficiently. The most common cause is a worn or failed catalytic converter, typical on 10-plus year old A4 exhaust systems. A new cat or full exhaust system resolves the codes.
Typically 5 to 15 horsepower with a quality cat-back system. The 2.0T TFSI is turbocharged, so reduced exhaust backpressure has a measurable but modest effect on output. The 3.0T Supercharged V6 shows similar gains. The primary motivation for most exhaust upgrades is sound character rather than raw power.
Yes for street use. The new catalytic converters in this exhaust system are DOT and EPA compliant for road use. We verify compliance before shipping. For track-only applications, off-road catless options are available separately on request.
No. The 2.0T and 3.0T have different downpipe configurations and exhaust manifold connections. The 2.0T uses a turbocharger flange; the 3.0T uses a supercharged V6 cross-bank routing. Match the engine to your specific car when ordering.
Usually not, but possible. Oxygen sensors typically transfer from your old exhaust to the new one. If your existing sensors are aged or fault-coded, plan to replace them at exhaust installation. Sensors are sold separately. The sensor mounting threads on the new exhaust match factory specification.
For California emissions compliance, verify CARB EO certification on the specific catalytic converter being shipped. Some configurations are 49-state legal but not California-legal. Call before ordering if you are in California.
15 Day Replacement Warranty
Every new 2014 Audi A4 exhaust system purchased through Part Nests carries a 15 day replacement warranty starting on the delivery date.
What Is Covered
- Manufacturing defects in welding, flange flatness, or material integrity
- Catalytic converter substrate defects beyond what was disclosed
- Muffler baffle or chrome finish defects from manufacturing
- Incorrect part shipped due to an error on our end
What Is Not Covered
- Damage caused during installation
- Damage from operating with a faulty or removed oxygen sensor
- Damage from operating with engine fueling issues that affect exhaust temperature
- Labor expenses of any kind
To start a warranty claim, reach us within 15 days of delivery at (240) 306-7051.
- New OEM-Specification Build: Not used, manufactured to factory geometry
- Engine and Drivetrain Confirmed: 2.0T or 3.0T, quattro or FrontTrak verified
- Stainless Steel Construction: Welds inspected at every joint
- Catalytic Converter Verified: DOT and EPA compliant before payment
- Pressure Tested Before Packaging: Complete assembly leak-checked
- 15 Day Replacement Cover: Manufacturing defects protected from delivery onward
2 reviews for 2014 Audi A4 Exhaust | Complete Exhaust System for B8 Chassis Audi A4
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At Part Nests, we specialize in high-quality used and OEM auto parts, with a wide selection of components ready to ship to customers.
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Sebastian K. –
Got a complete cat-back system for a 2014 A4 quattro 2.0T. Engine and drivetrain verified before payment, stainless steel welds inspected at every joint, pressure-tested before packaging. New cats verified DOT and EPA compliant. Direct fit, clean install.
Lance D. –
Sourced an axle-back system for a 2012 A4 (cross-compatible with the 2014 system). Year cross-compatibility confirmed up front, tip alignment verified before shipment. Sound change is moderate as expected for axle-back. Quality of welds and fit is OEM-equivalent.