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Catalytic Converter for 2003 Nissan Maxima

We have 38 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, Rear, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
$190.41 List Price $224.68 Save $34.27 Availability: In Stock
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  • SKU#: REPI960308
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 37 in. overall length
  • Notes: 1 inlet and 1 outlet configuration; 2-bolt welded type inlet flange; 2-bolt welded type outlet flange
  • Warranty: 5-year or 50,000-mile limited warranty
see more Fits the following 2003 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE
Evan Fischer Catalytic Converter, Firewall Side, Traditional Converter, 48-State Legal (Cannot Ship To CA Or NY)
$177.81 List Price $209.82 Save $32.01 Availability: In Stock
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  • SKU#: REPI960309
  • 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 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE

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 ECO II, Firewall Side, Traditional Converter
$202.85 List Price $511.81 Save $308.96 Availability: In Stock
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  • SKU#: EAST40477
  • 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: 8.5 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE
Eastern Catalytic Converter, Eastern ECO II, Rear, Traditional Converter
$180.11 List Price $485.87 Save $305.76 Availability: In Stock
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  • SKU#: EAST40574
  • 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: 37 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE
Eastern Catalytic Converter, Eastern ECO III, Radiator Side, Manifold Converter
$302.39 List Price $770.46 Save $468.07 Availability: In Stock
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  • SKU#: EAST40476
  • 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: 38 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2003 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE

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 Standard, Rear, Traditional Converter
$75.08 List Price $152.23 Save $77.15 Availability: In Stock
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  • SKU#: EAST82566
  • 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 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE

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, Traditional Converter
$111.97 List Price $144.90 Save $32.93 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
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  • SKU#: M6699005HM
  • 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
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2003 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE

Magnaflow OEM Grade (49-State Legal) Direct Fit Catalytic Converter

  • Not legal for use in California or in states adopting the California emissions standards
  • 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)
  • 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 49-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 Catalytic Converter, Magnaflow OEM Grade (49-State) Direct Fit, Front, Traditional Converter
$520.80 List Price $673.98 Save $153.18 Availability: In Stock
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  • SKU#: M6649366
  • 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
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2003 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE
Magnaflow Catalytic Converter, Magnaflow OEM Grade (49-State) Direct Fit, Rear, Traditional Converter
$285.91 List Price $370.00 Save $84.09 Availability: In Stock
  • Free Ground Shipping
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  • SKU#: M6651108
  • 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 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE
Magnaflow Catalytic Converter, Magnaflow OEM Grade (49-State) Direct Fit, Rear, Traditional Converter
$340.25 List Price $440.32 Save $100.07 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6649365
  • 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 Nissan Maxima submodels:
  • 6 Cyl 3.5L | GLE, GXE, SE

More results for 2003 Nissan Maxima Catalytic Converter

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
  • Legendary... (see more)
MAGNAFLOW OEM GRADE (49-STATE LEGAL) SEMI-UNIVERSAL CATALYTIC CONVERTER
  • Not legal for use in California or in states adopting the California emissions standards
  • Designed for vehicles equipped with California emissions but not registered or driven in a state adopting... (see more)
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)
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 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)

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.

... (see more)

PACESETTER PERFORMANCE - CATALYTIC CONVERTERS
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... (see more)
BOSAL 49-STATE LEGAL - NO CA SHIPMENTS CATALYTIC CONVERTER

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

Notes: