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Catalytic Converter for 2003 Mazda 6

We have 70 Items In-stock. Select your vehicle's Submodel to continue.

Evan Fischer 48-State Legal (No CA and NY) Catalytic Converter

This Evan Fischer 48-State Legal (No CA and NY) 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
  • 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
Evan Fischer Catalytic Converter, Firewall Side, Manifold Converter, 48-State Legal (Cannot Ship To CA Or NY)
$252.97 List Price $298.50 Save $45.53 Availability: In Stock
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  • SKU#: REPM960305
  • 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 limited warranty
Fits the following 2003 Mazda 6 submodels:
  • 6 Cyl 3.0L | S
Evan Fischer Catalytic Converter, Radiator Side, Manifold Converter, 48-State Legal (Cannot Ship To CA Or NY)
$180.90 List Price $213.46 Save $32.56 Made to Order
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  • SKU#: REPM960306
  • 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 limited warranty
Fits the following 2003 Mazda 6 submodels:
  • 6 Cyl 3.0L | S
Evan Fischer Catalytic Converter, Front, Driver And Passenger Side, Manifold Converter, 48-State Legal (Cannot Ship To CA Or NY)
$406.20 List Price $479.32 Save $73.12 Availability: In Stock
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  • SKU#: REPM960305-PLK
  • 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 limited warranty
Fits the following 2003 Mazda 6 submodels:
  • 6 Cyl 3.0L | S

Eastern 49-state legal Universal Catalytic Converter

Eastern 49-State Legal Universal Catalytic Converters

  • NANO technology for better converter efficiency
  • Advanced materials design for optimum engine output and catalytic efficiency
  • Complete range of inlet and outlet diameters
  • Non-directional for ease of installation
Backed by 3 decades of product expertise, Eastern continues to invest in state-of-the-art production equipment to guarantee only the best for their customers - making them ready for the future.

Note:
  • 49-state legal; Not legal in California and other states adopting California Emissions Standards; Not for sale or use in California and other states adopting California Emissions Standards; Cannot be shipped to California and such states
Eastern Catalytic Converter, Eastern ECO II, Center, Traditional Converter
$77.37 List Price $91.30 Save $13.93 Availability: In Stock
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  • SKU#: EAST83425
  • 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: 8 in. L x 6 in. W x 4 in. H, 12 in. overall length
  • Replaces OE Number: 12609727
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Mazda 6 submodels:
  • 6 Cyl 3.0L | S
Rating: (see review/s)

"I ordered this catalytic converter for my 4runner. I had it professionally installed. Within days, my check engine light came on. This part was defective from the start. I am extremely inconvenienced because even though it is under warranty, I will have to pay another $300 for the new one to get installed since labor is not included in the warranty. I will never purchase this part again!" posted by: Casper on December 11, 2014 view all 2 reviews

Eastern Catalytic Converter, Eastern Standard, Center, Traditional Converter
$68.18 List Price $80.45 Save $12.27 Availability: In Stock
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  • SKU#: EAST82615
  • 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
  • Replaces OE Number: 18160-RAA-A11
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Mazda 6 submodels:
  • 4 Cyl 2.3L | i
Rating: (see review/s)

"I have no complaints about this cat....from quality to fast shipping. I m one happy camper....ty APW!" posted by: Mike on March 31, 2014

Eastern Catalytic Converter, Eastern ECO II, Rear, Traditional Converter
$75.07 List Price $88.58 Save $13.51 Availability: In Stock
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  • SKU#: EAST82774
  • 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
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Mazda 6 submodels:
  • 6 Cyl 3.0L | S

49-state legal Eastern Direct Fit Catalytic Converter

Eastern 49-State Legal Direct Fit Catalytic Converters

  • NANO technology for better converter efficiency
  • Advanced materials design for optimum engine output and catalytic efficiency
  • Complete range of inlet and outlet diameters
Backed by 3 decades of product expertise, Eastern continues to invest in state-of-the-art production equipment to guarantee only the best for their customers - making them ready for the future.

Note:
  • 49-state legal; Not legal in California and other states adopting California Emissions Standards; Not for sale or use in California and other states adopting California Emissions Standards; Cannot be shipped to California and such states
Eastern Catalytic Converter, Eastern Standard, Center, Traditional Converter
$269.44 List Price $317.94 Save $48.50 Availability: In Stock
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  • SKU#: EAST40626
  • 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 Mazda 6 submodels:
  • 6 Cyl 3.0L | S
Rating: (see review/s)

"This company was fast in shipping very knowledgeable about the product and they also provided the gaskets and paid for return shipment. I had ordered these same items from another company they were not made correctly, came with no gaskets and I could not find any gaskets that fit even online they kept telling me I was wrong. When the mechanic put the converters to the manifold they were not even made correctly. Your company did an outstanding job made a 2 months waiting period for me turn into a two day process. Thanks for being so professional and patient. I will be back for more cars parts for sure. They even provide you a place to turn the items back in and get a refund." posted by: Candy on April 17, 2012

Eastern Catalytic Converter, Eastern Standard, Rear, Traditional Converter
$221.38 List Price $261.23 Save $39.85 Availability: In Stock
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  • SKU#: EAST40627
  • 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 Mazda 6 submodels:
  • 6 Cyl 3.0L | S
Eastern Catalytic Converter, Eastern ECO III, Center, Traditional Converter
$275.84 List Price $325.49 Save $49.65 Availability: In Stock
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  • SKU#: EAST40659
  • 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: L3632055XB
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Mazda 6 submodels:
  • 4 Cyl 2.3L | i
Rating: (see review/s)

"It fits perfectly ,easy to install but not much power" posted by: on February 21, 2011 view all 2 reviews

Eastern 50-state legal Catalytic Converter

Eastern ECO CARB Catalytic Converter

 30 years of innovation is proof enough that Eastern is the best manufacturer of the finest aftermarket and original equipment catalytic converters on the market. Their ECO Series Catalytic Converters which are designed to help keep the Check Engine Light (MIL) off is another set of catalytic converters with world class quality.

 The Eastern ECO CARB Catalytic Converter is the best option for any vehicle that needs to comply with the California Air Resources Board (CARB) regulations. The Eastern ECO CARB Catalytic Converter features washcoats with greater loadings of precious metals to handle applications with ultra low emissions, higher than normal emissions, as well as vehicles with higher mileage and heavier workloads.

Here's why Eastern ECO CARB Catalytic Converter is the best option:

  •   Passed the emissions requirement of the California Air Resources Board
  •   Engineered with Eastern's proprietary NANO technology yielding highly efficient loadings for lower cost and better converter efficiency
  •   Features an advanced materials design for maximum engine output and performance
  •   Comes with a 5-year or 50,000-mile warranty
Eastern Catalytic Converter, Eastern ECO CARB, Center, Traditional Converter
$178.84 List Price $211.03 Save $32.19 Availability: In Stock
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  • SKU#: EAST630002
  • Emissions: 50-State Legal
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • EO Number: D-665-16
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Mazda 6 submodels:
  • 4 Cyl 2.3L | i

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 Catalytic Converter, Magnaflow 49-State Semi-Universal, Rear, Driver Or Passenger Side, Traditional Converter
$111.97 List Price $144.90 Save $32.93 Availability: In Stock
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  • SKU#: M6699004HM
  • 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: 12 in. L x 6.5 in. W, 16 in. overall length
  • EO Number: Not applicable
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2003 Mazda 6 submodels:
  • 6 Cyl 3.0L | S
Rating: (see review/s)

"It was easy for the installer to install. Did not affect the Oxygen Sensor, and now I got super great mileage, from less than 20 mpg, I now get 26.5 mpg." posted by: Gil on March 15, 2010

Magnaflow Catalytic Converter, Magnaflow 49-State Semi-Universal, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
$113.92 List Price $147.42 Save $33.50 Availability: In Stock
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  • SKU#: M6699356HM
  • Product Fit: Semi-Universal
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 11 in. L x 5.13 in. W, 15 in. overall length
  • EO Number: Not applicable
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2003 Mazda 6 submodels:
  • 4 Cyl 2.3L | i

More results for 2003 Mazda 6 Catalytic Converter

MAGNAFLOW CALIFORNIA LEGAL SEMI-UNIVERSAL CATALYTIC CONVERTER
  • 50-State/California Legal
  • 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,... (see more)
MAGNAFLOW 49-STATE LEGAL DIRECT FIT CATALYTIC CONVERTER
  • Not legal for use in California or in states adopting the California emissions standards
  • Easy bolt-on Installation with no cutting, welding or bending required
  • Stainless Steel Construction
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MAGNAFLOW CALIFORNIA LEGAL DIRECT-FIT CATALYTIC CONVERTERS
  • California/50-State Legal
  • Easy bolt-on Installation with no cutting, welding or bending required
  • Stainless Steel Construction
  • Legendary Magnaflow quality, power, and sound
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MAGNAFLOW OEM GRADE (49-STATE LEGAL) DIRECT FIT CATALYTIC CONVERTER
  • Not legal for use in California or in states adopting the California emissions standards
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MAGNAFLOW OEM GRADE (49-STATE LEGAL) SEMI-UNIVERSAL CATALYTIC CONVERTER
  • Not legal for use in California or in states adopting the California emissions standards
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DAVICO 49-STATE LEGAL - NO CA SHIPMENTS CATALYTIC CONVERTER

Davico Catalytic Converter

When it concerns choosing a solid brand name for your engine/exhaust system's catalytic converter, turn to Davico. Davico's line of original equipment quality replacement... (see more)

CATCO CATALYTIC CONVERTER (49-STATE LEGAL - NO CA SHIPMENTS)

Catco catalytic converters are designed with 409 stainless steel pipes and shell that guarantee the customers of durability and longer life.

Note:

  • 49-state legal; Not for sale or use in California;... (see more)
WALKER 49-STATE LEGAL - NO CA SHIPMENTS 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... (see more)

WALKER CATALYTIC CONVERTER 49-STATE LEGAL

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.

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WALKER 50-STATE LEGAL 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... (see more)