Shopping outside the US? International Shipping is now available!

×

APW Part Finder

Related Products

Catalytic Converter for 2003 Audi A6 Quattro

We have 58 Items In-stock. Select your vehicle's Submodel to continue.

Eastern - Universal Catalytic Converters (48-State Legal - No CA, No NY)

EASTERN - UNIVERSAL CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

Eastern's universal catalytic converters are durably designed and powered with NANO technology for highly efficient, long-lasting function. Since 1976, Eastern Catalytic has specialized in engineering world-class catalytic converters for the automotive aftermarket.

  • NANO technology delivers better converter efficiency
  • Brings optimum engine performance
  • Complete range of outlet and inlet diameters
  • Non-directional for ease of installation
Note:
  • 48-state legal - not for sale or use in California or New York; cannot be shipped to California or New York addresses.

Eastern Standard Driver Or Passenger Side Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$53.98 $63.70 You Save $9.72 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 70318
  • Location: Driver Or Passenger Side
  • Series: Eastern Standard
  • Type: Traditional Converter
  • 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
  • Dimensions: 6 x 4.25 x 10 in., 14 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more
Customer Review: (see review/s)
  • I ordered this part and was very happy with the shipping time and the price. I would definitly order from your company again and would recommend it to anyone else.

    posted by: on February 12, 2015

  • view all 14 reviews

Eastern Standard Rear Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$51.66 $60.96 You Save $9.30 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 70316
  • Location: Rear
  • Series: Eastern Standard
  • Type: Traditional Converter
  • 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
  • Dimensions: 6 x 4.25 x 10 in., 14 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 6 Cyl 2.7L | Base
See more
Customer Review: (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

  • view all 8 reviews

Eastern - OE Replacement Catalytic Converters (48-State Legal - No CA, No NY)

EASTERN - OE REPLACEMENT CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

Eastern's OE replacement catalytic converters are equipped with advanced design elements and NANO technology for maximum performance. Since 1976, Eastern Catalytic has specialized in engineering world-class catalytic converters for the automotive aftermarket.

  • NANO technology provides greater converter efficiency
  • Designed with advanced materials and OE-style flex assemblies and flanges
  • Facilitates optimal engine performance
  • Full range of outlet and inlet diameters
Note:
  • 48-state legal - not for sale or use in New York or California; cannot be shipped to New York or California addresses.

Eastern ECO II Driver Side Catalytic Converter - Traditional Converter, Direct Fit

$294.89 $347.97 You Save $53.08 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 40689
  • Location: Driver Side
  • Series: Eastern ECO II
  • Type: Traditional Converter
  • 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
  • Replaces OE Number: 4B0253011QX, 4B0253011RX
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 6 Cyl 3.0L | Avant, Base
See more

Eastern ECO II Passenger Side Catalytic Converter - Traditional Converter, Direct Fit

$315.53 $372.33 You Save $56.80 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 40690
  • Location: Passenger Side
  • Series: Eastern ECO II
  • Type: Traditional Converter
  • 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
  • Dimensions: 50.5 in. overall length
  • Replaces OE Number: 4B0253012QX, 4B0253012RX
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 6 Cyl 3.0L | Avant, Base
See more

Eastern ECO III Passenger Side Catalytic Converter - Traditional Converter, Direct Fit

$378.68 $446.84 You Save $68.16 (15%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Eastern 40729
  • Location: Passenger Side
  • Series: Eastern ECO III
  • Type: Traditional Converter
  • 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
  • Dimensions: 47 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more

Magnaflow 49-State Legal Semi-Universal Catalytic Converter

  • 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.

Magnaflow 49-State Semi-Universal Passenger Side Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$100.27 $129.77 You Save $29.50 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 99204HM
  • Location: Passenger Side
  • Series: Magnaflow 49-State Semi-Universal
  • Type: Traditional Converter
  • 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
  • Dimensions: 9 in. L x 5.13 in. W, 13 in. overall length
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more
Customer Review: (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

Magnaflow 49-State Semi-Universal Driver Side Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$100.27 $129.77 You Save $29.50 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 99206HM
  • Location: Driver Side
  • Series: Magnaflow 49-State Semi-Universal
  • Type: Traditional Converter
  • 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
  • Dimensions: 9 in. L x 5.13 in. W, 13 in. overall length
  • Notes: Does not have provision for O2 sensor
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more
Customer Review: (see review/s)
  • While it is necessary to adapt to pipe size on vehicle, the rear requires leaving part of the previous converter on. i.e. The very end of the old converter. That will be the same OD as the new converrter. The old fitting has to be ground down, or as I did, filed. I might better have used a coupling. When I do the left bank, I may try cutting the old portion off, and adapt down. I shall try the coupling. You must have a local supplier who stocks a wide variety of fittings! They are inexpensive. Remember, the adapters can be shortened to allow slippage while installing. They can always be shortened, but cannot be lengthened once cut off, so measure carefully. Think ahead. Procrastinate. As it is, I am still going to have a friend braze the rear end joint, as it leaks a little. Using a coupling most likely would have avoided the leakage.

    posted by: suvguy on July 24, 2012

Magnaflow OEM Grade (48-State Legal) Semi-Universal Catalytic Converters

  • Not legal for use in California or New York
  • Designed for vehicles equipped with California emissions but not registered or driven in a state adopting the California emissions standards (see item details for more information)
  • 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 48-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.

Magnaflow OEM Grade (49-State) Semi-Universal Driver Side Catalytic Converter - Traditional Converter, Semi-Universal

Best Seller
$122.43 $158.43 You Save $36.00 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 51206
  • Location: Driver Side
  • Series: Magnaflow OEM Grade (49-State) Semi-Universal
  • Type: Traditional Converter
  • 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
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more

Magnaflow OEM Grade (49-State) Semi-Universal Passenger Side Catalytic Converter - Traditional Converter, Semi-Universal

$122.43 $158.43 You Save $36.00 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 51204
  • Location: Passenger Side
  • Series: Magnaflow OEM Grade (49-State) Semi-Universal
  • Type: Traditional Converter
  • 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
  • Notes: 2 in. Inlet/Outlet, 9 in. Body, 5.125 in. Wide, 13 in. Overall Length, Round-Shaped, Center/Center Configuration
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more

Magnaflow 48-State Legal Direct Fit Catalytic Converters

  • Not legal for use in California or New York
  • Easy bolt-on Installation with no cutting, welding or bending required
  • 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 48-State Legal direct-fit catalytic converters are specifically designed to fit your vehicle with a no-hassle installation – no cutting, welding, or bending required.  Engineered to cut emissions and improve performance.

Magnaflow 49-State Direct Fit Passenger Side Catalytic Converter - Traditional Converter, Direct Fit

$407.80 $527.75 You Save $119.95 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 24061
  • Location: Passenger Side
  • Series: Magnaflow 49-State Direct Fit
  • Type: Traditional Converter
  • 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
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more

Magnaflow 49-State Direct Fit Driver Side Catalytic Converter - Traditional Converter, Direct Fit

$407.80 $527.75 You Save $119.95 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 24062
  • Location: Driver Side
  • Series: Magnaflow 49-State Direct Fit
  • Type: Traditional Converter
  • 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
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 8 Cyl 4.2L | Base
See more

Magnaflow 49-State Direct Fit Passenger Side Catalytic Converter - Traditional Converter, Direct Fit

$397.55 $514.47 You Save $116.92 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Magnaflow 24125
  • Location: Passenger Side
  • Series: Magnaflow 49-State Direct Fit
  • Type: Traditional Converter
  • 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
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
See more

Fits the following 2003 Audi A6 Quattro Submodels

  • 6 Cyl 3.0L | Avant, Base
See more

More results for 2003 Audi A6 Quattro Catalytic Converter

Need Help? Get everything right and save time

Shop 2003 Audi A6 Quattro Catalytic Converter or call our auto parts experts at or get an expert recommendation via Live Chat

Our Advantage

Free Shippingon orders $50 and above

Copyright ©1995-2014 Auto Parts Warehouse. All Rights Reserved.
Please read Auto Parts Warehouse's Updated Privacy Policy

Hide