APWPART FINDER
My Vehicle Add New
  • Select Year
  • Select Make
  • Select Model
  • Select Submodel
  • Select Engine

Shop by Brand

Audi A4 Quattro Catalytic Converter

We have 8 Items In-stock. Select a year to continue.
$154.99 List Price $182.89 Save $27.90 Availability: In Stock
  • APW Bestseller
  • Clearance Item
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)

This Evan Fischer 49-State Legal (No CA) Direct Fit Catalytic Converter is manufactured from high quality and durable stainless steel catalytic case, 16-gauge aluminized steel tubes, and heat shield for long lasting durability and better protection for your vehicle. 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!

Evan Fischer also offers comprehensive manifold converter assemblies for newer vehicle models!

  • OBD-II And EPA compliant catalytic converter
  • Requires NO cutting or welding
  • Honeycomb catalyst with maximum surface area flow
  • 49-State Legal, not for sale or use in California; cannot be shipped to California addresses
  • 2-year or 25,000-mile Evan Fischer warranty on converter and 5-year or 50,000-mile Evan Fischer warranty on another components
  • SKU#: REPV960302
  • Brand: Evan Fischer
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 16.63 in. overall length
(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 $61.28 Save $9.35 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
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 Transmission
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
(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

$97.63 List Price $126.35 Save $28.72 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • 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
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
(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

$329.60 List Price $844.40 Save $514.80 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)

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:

  • Includes gasket: 24751 (1)
  • Does not require cutting, sliding, clamping, or welding for installation
Note: Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: DAV18075
  • Brand: Davico
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
(see more)
Fits the following Audi A4 Quattro Years:
  • 2000-2001 | 6 Cyl 2.8L | Avant, Base
Rating: (see review/s)

"The bracket that holds the pipe to where it's mounted to the transmission was welded in the wrong place. This was almost a direct fit, but I forsee it putting a lot of stress on the flex joint." posted by: T on May 8, 2011

$322.62 List Price $693.58 Save $370.96 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
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
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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)
View All
$375.68 List Price $733.36 Save $357.68 Availability: In Stock
  • Clearance Item
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
WALKER CATALYTIC CONVERTER



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

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

  • SKU#: WK16087
  • Brand: Walker
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 2-3 business days
  • Dimensions: 15.38 in. overall length
(see more)
Fits the following Audi A4 Quattro Years:
  • 2001-2005 | 4 Cyl 1.8L | Avant, Base
  • 2004 | 4 Cyl 1.8L | Cabriolet
$249.92 List Price $700.00 Save $450.08 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
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
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 64 in. L x 8 in. W x 6 in. H
  • Warranty: 5-year or 25,000-mile Bosal limited warranty
 
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

$395.00 List Price $1,185.00 Save $790.00 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
BENCHMARK CATALYTIC CONVERTER

Benchmark catalytic converters are considered to be the industry's standard replacement catalytic converter. It is the recognized leader in fitment and durability. It features perfect fit and repeatability and its performance results are continually monitored by Benchmark's internal emissions laboratory to insure quality loadings which eliminate OBDII issues caused by many universal catalysts.

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

  • SKU#: BEN1361
  • Brand: Benchmark
  • Fit Note: Automatic Transmission
  • Quantity Sold: Sold Individually
  • Tube Material: Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Benchmark limited warranty
 
Fits the following Audi A4 Quattro Years:
  • 2007-2008 | 6 Cyl 3.2L | Cabriolet
  • 2005-2008 | 6 Cyl 3.2L | Avant, Base
View Less
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.