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Audi A4 Quattro Catalytic Converter

We have 10 Items In-stock. Select a year to continue.
$197.94 List Price $233.57 Save $35.63 Availability: In Stock
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EVANFISCHER DIRECT FIT CATALYTIC CONVERTER

This direct fit item is manufactured from high quality and durable stainless steel catalytic case, 16-gauge aluminized steel tubes, and heat shield for long lasting durability and for better protection. It also features honeycomb catalyst that has maximum surface area flow.

OBD-II and EPA compliant catalytic converter; It is a high quality aftermarket replacement for the OEM catalytic converter. Designed for easy installation - it requires no cutting or welding! This is manufactured in accordance to industry standards to ensure product durability and reliability; best of all, EvanFischer products are covered by 5-year or 50,000-mile limited warranty.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.
  • SKU#: REPV960302
  • Brand: Evan Fischer
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 16.63 in. overall length
  • Replaces OE Number: 8E0131089DX
(see more)
Fits the following Audi A4 Quattro Years:
  • 2001-2005 | 4 Cyl 1.8L | Avant, Base
  • 2004 | 4 Cyl 1.8L | Cabriolet
$51.93 List Price $101.33 Save $49.40 Availability: In Stock
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EASTERN CATALYTIC CONVERTER

World-class quality and innovation have made Eastern the best converter manufacturer in the business. 100% of Eastern's research and development efforts goes into making the finest aftermarket and original equipment catalytic converters on the market. Each Eastern catalytic converter uses advanced materials design which retains maximum engine output and maximizes catalytic efficiency. Eastern's proprietary NANO technology chemistry yields highly efficient loadings for lower cost and better converter efficiency.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: EAST70316
  • Brand: Eastern
  • Fit Note: Automatic Transaxle
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Audi A4 Quattro Years:
  • 2000-2001 | 6 Cyl 2.8L | Avant, Base
Rating: (see review/s)

"Came very fast. I ordered it round a lil before 1 on a tuesday and it was at my house friday morning. It was the right part and the price was way less than if I had bought it from a local auto parts store. Two things to know; you need to be sure everything that caused it to go bad has been fixed if not you will eventually kill the new one so get your check engine light off first. Clean out your egr valve if you didnt need to replace it might as well replace your pcv valve cuz its only $3 and clean out the area where its seated and if an O2 sensor is bad replace it the only two on this car (2000 model year) are right in the area of catalytic. Also if your flex pipe is bad you can just a flex pipe so you may be able to piece it together without having to buy the converter with the pipe to manifold. I ended up replacing or cleaning almost my whole emissions system to get it to pass the state test. With the help of this site and my own ingenuity what would have been over $500 in parts cost less than $140 not bad at all!!" posted by: In Cleveland on January 26, 2014

"Item arrived as described would recommend.thks..would buy from again as needed. Best price n town." posted by: Mike on December 1, 2013 view all 8 reviews

$100.27 List Price $129.77 Save $29.50 Availability: In Stock
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  • Not legal for use in California or in states adopting the California emissions standards
  • Semi-universal design – cut out your old catalytic converter and weld in the new one
  • Stainless Steel Construction
  • Legendary Magnaflow quality, power, and sound
  • Ceramic, honeycomb catalyst designed for maximum flow and surface area

When you want the best, you want Magnaflow!  These 49-State Legal semi-universal catalytic converters have a catalyst specifically designed for your vehicle – just cut out your old catalytic converter and weld in the new one.  Engineered to cut emissions and improve performance.

  • SKU#: M6699204HM
  • Brand: Magnaflow
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Audi A4 Quattro Years:
  • 1998-1999 | 6 Cyl 2.8L | Avant
  • 1996-1999 | 6 Cyl 2.8L | Base
Rating: (see review/s)

"Replaced entire exhaust and this item was part of it. Couple days for shipping arrived undamaged had everything welded and installed and sounds great. This is a fraction of the cost of a direct fit/bolt on converter so was pretty much a no-brainer." posted by: on May 18, 2014

$361.72 List Price $794.64 Save $432.92 Availability: In Stock
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Davico Catalytic Converter

Davico Manufacturing is committed to producing hard to find and specialized exhaust parts for the customer's satisfaction. Its catalytic converter is an example of the company's outstanding dedication.

Davico Catalytic Converter's design enables the conversion of harmful compounds into less dangerous gasses to help in pollution control without reducing its efficiency. Designed for many makes and models, this converter is easy to install.

Specifications:

  • Does not include gasket
  • Does not require sliding, cutting, clamping, or welding
Note: Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: DAV18312
  • Brand: Davico
  • Fit Note: Manual Transmission
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Audi A4 Quattro Years:
  • 2002-2003 | 6 Cyl 3.0L | Avant, Base
$322.62 List Price $693.58 Save $370.96 Availability: In Stock
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CATCO CATALYTIC CONVERTER

Catco catalytic converters are designed with 409 stainless steel pipes and shell for longer life.

Specifications
  • 3-bolt flange welded inlet
  • 3-bolt welded flange outlet
  • Oval body
  • 17 in. overall length
  • Single inlet and outlet configuration
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.
  • SKU#: CAT4186
  • Brand: Catco
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 17 in. overall length
(see more)
Fits the following Audi A4 Quattro Years:
  • 1999-2005 | 4 Cyl 1.8L | Avant
  • 1997-2005 | 4 Cyl 1.8L | Base
(see more)
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$100.82 List Price $211.52 Save $110.70 Availability: In Stock
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WALKER CATALYTIC CONVERTER, UNIVERSAL

Walker catalytic converters feature OE style design and fit, thicker OE-quality flanges, oxygen sensor fittings, heat-shielded pipe, and structural brace for enhanced strength and durability.

Features
  • Higher loaded substrate
  • Easy bolt-on installation
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: WK93251
  • Brand: Walker
  • Fit Note: Fits Federal and California Emissions Models
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: Same day - 1 business day
(see more)
Fits the following Audi A4 Quattro Years:
  • 1996 | 6 Cyl 2.8L | Base
Rating: (see review/s)

"good quality product excellent fit easy to install fast delivery.." posted by: bear on June 30, 2014

$245.52 List Price $320.94 Save $75.42 Availability: In Stock
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FLOWMASTER – 50 STATE LEGAL SEMI-UNIVERSAL CATALYTIC CONVERTER

Failed the smog test because of a malfunctioning stock catalytic converter that has come to the end of its life? Don’t panic and send your vehicle off to the junkyard when everything else is running smoothly. Replace that old catalytic converter with a new Flowmaster 50 State Semi-Universal Catalytic Converter and go back in for a retest. Since installing a new converter from any car dealer is exceedingly expensive, using a Flowmaster is a much better alternative. After installing a Flowmaster 50 State Legal Semi-Universal Catalytic Converter, your car, truck or SUV will have a much better chance of passing the smog test and it will not trip check engine lights as well. Flowmaster known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Great for replacing worn out factory original catalytic converters
  • Designed and manufactured in U.S.A.
  • Meticulously engineered internals with the correct precious metals won’t set off check engine lights
  • Mandatory in all states that adopted strict California vehicle emission standards
  • All California Air Resources Board (CARB) requirements are met
  • Catalyst housing is made from stainless steel for longevity
  • Made for a wide selection of popular trucks, SUVs and cars

NOTE: Requires clamps, welding or custom fabrication to install

  • SKU#: F133940024
  • Brand: Flowmaster
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • EO Number: D-280-100
(see more)
Fits the following Audi A4 Quattro Years:
  • 1998 | 6 Cyl 2.8L | Avant
  • 1996-1998 | 6 Cyl 2.8L | Base
$188.65 List Price $222.61 Save $33.96 Availability: In Stock
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PACESETTER - CATALYTIC CONVERTERS

Replace your sub-par stock converter with a higher performing catalytic converter by Pacesetter Performance. Their converters are fabricated from the finest mandrel-bent stainless steel and feature perfect fit machined steel flanges. Pacesetter, known for their exhausts, has been a leading manufacturer of performance headers and exhaust systems since their inception in 1974.
  • Designed to replace poorly performing OEM converter
  • Streamlines and improves exhaust flow via honeycomb catalyst
  • Made from fine mandrel-bent stainless steel
  • Complies with EPA/CARB regulations
  • Bolts on for quick and easy installation (on most vehicles)
  • Backed by a 5-year/50,000-mile warranty
  • Direct fit by vehicle year, make and model
  • 49-state legal (not legal in CA)
  • Designed and manufactured in the USA
  • SKU#: P40324078
  • Brand: Pacesetter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
(see more)
Fits the following Audi A4 Quattro Years:
  • 1999-2005 | 4 Cyl 1.8L | Avant
  • 1997-2005 | 4 Cyl 1.8L | Base
(see more)
$249.92 List Price $700.00 Save $450.08 Availability: In Stock
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BOSAL CATALYTIC CONVERTER ASSEMBLY

Bosal catalytic converters are made to fit vehicle-specific requirements for backpressure, emissions, sound levels, and sensors. Designed and built for long life reliability.

Specifications
  • Flange inlet
  • Standard assembly with one catalytic converter
  • Round body
  • 64 in. L x 8 in. W x 6 in. H
  • Single inlet and outlet configuration
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: BO0990582
  • Brand: Bosal
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Dimensions: 64 in. L x 8 in. W x 6 in. H
(see more)
Fits the following Audi A4 Quattro Years:
  • 1998-1999 | 6 Cyl 2.8L | Avant
  • 1996-1999 | 6 Cyl 2.8L | Base
Rating: (see review/s)

"i bought both left and right side. passenger side was installed with no problem. driver side though was a real headache. it wouldn't fit correctly. I ordered another one from different company (same part number) and it was the same problem (actualy this time it was even worse). I don't know what is with Bosal i thought that they were making quality parts. at the end i have to cut, adjust properly and weld it back. Wrote to Bosal, still no response... In future i'll try to avoid BOSAL" posted by: KK on January 10, 2011

$423.95 List Price $579.18 Save $155.23 Availability: In Stock
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Diversified Environmental Catalysts
Diversified Environmental Catalysts, Inc. specializes in the manufacturing of direct fit catalytic converters for import and domestic vehicles.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: W0133-1903175
  • Brand: Benchmark
  • Fit Note: 49-state legal, OBDII compatible,Not Approved for Sale or Use in California. ** Replacement of All O2 Sensors and Air Mass Flow Sensors is Also Highly Recommended When Replacing Catalytic Converters**
  • Tube Material: Steel
  • Anticipated Ship Out Time: 1-2 Business Days
 
Fits the following Audi A4 Quattro Years:
  • 2000-2005 | 4 Cyl 1.8L | Avant, Base
  • 2004 | 4 Cyl 1.8L | Cabriolet
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Select more Audi A4 Quattro parts under Catalytic Converters & Components from list below.

Toxic matter will build up in your catalytic converter over time; when this happens, the driving performance of your Audi A4 Quattro will be severely affected. Your vehicle's gas mileage will drop, and you will have problems accelerating, since the clogs inhibit the necessary force you need when speeding. Even when idling, a failing catalytic converter is easily noticeable because a certain vibration will be felt. It will continue to gasp for life until it eventually gives way, causing your engine to die while in idle, or even in mid-travel. When the catalytic converter dies, it will be impossible to start your car.

Frequently Asked Questions

Ask APW
  • Are clogs with the Audi A4 Quattro catalytic converter normal?
    Answer: Yes. Clogs happen because the catalytic converter builds up chemical matter after repeated and long-term use--this is perfectly normal, as long as the unit remains intact. The common sign that will indicate clogs is when the Audi A4 Quattro fails to accelerate right away when the gas pedal is stepped on. Worse cases of clog may totally render the car dead. Although a replacement may not be necessary if the unit is in good physical condition. Clean the old part first and test it out before finally deciding whether or not a replacement is needed.
  • Are there certain substances that need the Audi A4 Quattro catalytic converter to be prevented from?
    Answer: Other than lead, there is nothing else to worry about. Lead encapsulates the internal system of the converter and prevents it from treating the exhaust. All vehicles with a catalytic converter should only fill up on unleaded petrol to avoid poisoning the system.
  • Can the Audi A4 Quattro catalytic converter be installed without a mechanic?
    Answer: Installing it may be a bit difficult especially without sufficient mechanical experience. Several parts need to be detached before the catalytic converter can be moved; reinstalling those parts again in their proper places can be tricky. And before anyone goes out to buy a catalytic converter, remember that it is absolutely illegal anywhere in the US to sell and use a second-hand unit. Again, smog regulations are strict, and refurbished converters will not pass the assessment.
  • Can the Audi A4 Quattro run with a catalytic converter uninstalled?
    Answer: Yes, it can. But no exhaust gas conversion will take place. The emission will produce a thick, black smoke, and the federal government has stringent laws on environmental pollution. It prohibits all vehicles to run without a converter. Hence, the constant emission test required every registration.