Shop by Vehicle

Catalytic Converter for 2003 Nissan Maxima

We have 31 Items In-stock. Select your vehicle's Submodel to continue.

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, Front, Passenger Side, 49-state Legal - No CA Shipments
$202.85 List Price $239.36 Save $36.51 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40477
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized steel
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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, 49-state Legal - No CA Shipments
$175.10 List Price $206.62 Save $31.52 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40574
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized steel
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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 II, Front, Driver Side, 49-state Legal - No CA Shipments
$299.87 List Price $353.85 Save $53.98 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST40476
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized steel
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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, Rear, 49-state Legal - No CA Shipments, Minor Modifications
$71.38 List Price $84.23 Save $12.85 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: EAST82566
  • Quantity Sold: 1 piece
  • Tube Material: Aluminized steel
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
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, 49-state Legal - No CA Shipments, Minor Modifications
$108.98 List Price $141.03 Save $32.05 Availability: In Stock
  • APW Bestseller
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6699005HM
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless steel
  • EO Number: Not applicable
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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 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 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 49-State Direct Fit, Front, 49-state Legal - No CA Shipments
$429.46 List Price $555.78 Save $126.32 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6650878
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless steel
  • EO Number: Not applicable
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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 49-State Direct Fit, Rear, 49-state Legal - No CA Shipments
$254.17 List Price $328.92 Save $74.75 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6650877
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless steel
  • EO Number: Not applicable
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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 49-State Direct Fit, Rear, 49-state Legal - No CA Shipments
$220.46 List Price $285.31 Save $64.85 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6693197
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless steel
  • EO Number: Not applicable
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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, 49-state Legal - No CA Shipments
$505.62 List Price $654.34 Save $148.72 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6649366
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless steel
  • EO Number: Not applicable
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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, 49-state Legal - No CA Shipments
$330.33 List Price $427.48 Save $97.15 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6649365
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless steel
  • EO Number: Not applicable
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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, 49-state Legal - No CA Shipments
$277.58 List Price $359.23 Save $81.65 Availability: In Stock
  • Free Ground Shipping
  • Low Price Guarantee
(

more

)
  • SKU#: M6651108
  • Product Fit: Direct fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless steel
  • EO Number: Not applicable
  • Anticipated Ship Out Time: 1-2 business days
  • Catalyst Substrate Material: Ceramic honeycomb
  • 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 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
  • ... (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)
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)
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)

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:

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)