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

Catalytic Converter for 2003 Audi A6 Quattro

We have 60 Items In-stock.

Evan Fischer Catalytic Converter

Evan Fischer Catalytic Converter, Driver Side, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Evan Fischer Catalytic Converter Evan Fischer Catalytic Converter
$271.71 List Price $320.62 Save $48.91 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: REPA960304
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Inlet Type: Single (3-bolt welded flange)
  • Outlet Type: Single (2 in. OD)
  • Oxygen Sensor Ports: 2
  • Warranty: 5-year or 50,000-mile limited warranty
see more Fits the following 2003 Audi A6 Quattro submodels:
  • 6 Cyl 3.0L | Avant, Base
Evan Fischer Catalytic Converter, Passenger Side, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Evan Fischer Catalytic Converter Evan Fischer Catalytic Converter
$273.13 List Price $322.29 Save $49.16 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: REPA960303
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 50 in. overall length
  • Inlet Type: Single (3-bolt welded flange)
  • Outlet Type: Single (2 in. OD)
  • Oxygen Sensor Ports: 2
  • Warranty: 5-year or 50,000-mile limited warranty
see more Fits the following 2003 Audi A6 Quattro submodels:
  • 6 Cyl 3.0L | Avant, Base
Evan Fischer Catalytic Converter, Driver And Passenger Side, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Evan Fischer Catalytic Converter Evan Fischer Catalytic Converter
$508.42 List Price $599.94 Save $91.52 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: REPA960303-PLK
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Inlet Type: Single (3-bolt welded flange)
  • Outlet Type: Single (2 in. OD)
  • Oxygen Sensor Ports: 2
  • Warranty: 5-year or 50,000-mile limited warranty
see more Fits the following 2003 Audi A6 Quattro submodels:
  • 6 Cyl 3.0L | Avant, Base

Eastern Catalytic Converter

Eastern Catalytic Converter, Eastern Standard, Driver Or Passenger Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$54.29 List Price $101.33 Save $47.04 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST70318
  • 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: Same day - 1 business day
  • 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
Rating: (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 Catalytic Converter, Eastern Standard, Rear, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$51.93 List Price $101.33 Save $49.40 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST70316
  • 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
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 view all 8 reviews

Eastern Catalytic Converter, Eastern ECO II, Passenger Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$312.58 List Price $793.44 Save $480.86 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40690
  • 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
Eastern Catalytic Converter, Eastern ECO II, Driver Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$291.94 List Price $739.67 Save $447.73 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40689
  • 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
Eastern Catalytic Converter, Eastern ECO III, Driver Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$375.73 List Price $1,078.52 Save $702.79 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40728
  • 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
  • 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
Eastern Catalytic Converter, Eastern ECO III, Passenger Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$375.73 List Price $1,078.52 Save $702.79 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40729
  • 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
Eastern Catalytic Converter, Eastern ECO III, Passenger Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$422.46 List Price $989.84 Save $567.38 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40865
  • 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
  • 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
Eastern Catalytic Converter, Eastern ECO III, Driver Side, Traditional Converter
Eastern Catalytic Converter Eastern Catalytic Converter
$370.30 List Price $936.08 Save $565.78 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40939
  • 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
  • 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
Eastern Catalytic Converter, Passenger Side, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
Eastern Catalytic Converter Eastern Catalytic Converter
$370.30 List Price $936.08 Save $565.78 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40940
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
Fits the following 2003 Audi A6 Quattro submodels:
  • 6 Cyl 2.7L | Base

Magnaflow Catalytic Converter

Magnaflow Catalytic Converter, Magnaflow 49-State Semi-Universal, Passenger Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$100.27 List Price $129.77 Save $29.50 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6699204HM
  • 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
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 view all 1 reviews

Magnaflow Catalytic Converter, Magnaflow 49-State Semi-Universal, Driver Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$100.27 List Price $129.77 Save $29.50 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6699206HM
  • 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
Rating: (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 view all 1 reviews

Magnaflow Catalytic Converter, Magnaflow 49-State Direct Fit, Passenger Side, Traditional Converter
Magnaflow Catalytic Converter Magnaflow Catalytic Converter
$407.80 List Price $527.75 Save $119.95 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6624061
  • 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