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Catalytic Converter for 2004 Nissan Altima

We have 54 Items In-stock. Select your vehicle's Submodel to continue.

Evan Fischer 49-State Legal (No CA) OE Replacement Catalytic Converter

This Evan Fischer 49-State Legal (No CA) 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
  • 49-State Legal, not for sale or use in California; cannot be shipped to California addresses
  • 2-year or 25,000-mile Evan Fischer warranty on converter and 5-year or 50,000-mile Evan Fischer warranty on another components
Evan Fischer Catalytic Converter, Front, 49-State Legal - No CA Shipments, Direct Fit
$457.13 List Price $539.41 Save $82.28 Availability: In Stock
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  • SKU#: REPN960309
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Catalytic Converter Type: Catalytic Converter with Exhaust Manifold
  • Dimensions: 19.75 in. overall length
  • Warranty: 5-year or 50,000-mile limited warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 4 Cyl 2.5L | S, SL, Base
Evan Fischer Catalytic Converter, Radiator Side, 49-State Legal - No CA Shipments, Direct Fit
$179.99 List Price $212.39 Save $32.40 Availability: In Stock
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  • SKU#: REPN960312
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 13 in. overall length
  • Warranty: 5-year or 50,000-mile limited warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 6 Cyl 3.5L | 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 ECO II, Rear, 49-State Legal - No CA Shipments
$67.28 List Price $79.39 Save $12.11 Availability: In Stock
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  • SKU#: EAST83165
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 10 in. L x 6 in. W x 4.25 in. H, 14 in. overall length
  • Replaces OE Number: F42Z5E212C
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 4 Cyl 2.5L | S, SL, Base
Rating: (see review/s)

"quality of product great price and fast shipping!!!" posted by: ray on June 25, 2014 view all 5 reviews

Eastern Catalytic Converter, Eastern Standard, Rear, 49-State Legal - No CA Shipments
$50.05 List Price $59.06 Save $9.01 Availability: In Stock
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  • SKU#: EAST70258
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 5 x 5 x 10 in. body, 14 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 6 Cyl 3.5L | SE
Rating: (see review/s)

"great price-fit like a glove- works very well-and the first time i bought a part for my BMW 740 il that i did not feel like i had been attact from behind and hi jacked.I have found a new home for my parts now." posted by: g.l. on June 20, 2009

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 III, Radiator Side, 49-State Legal - No CA Shipments
$249.47 List Price $294.37 Save $44.90 Availability: In Stock
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  • SKU#: EAST40420
  • 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: 13 in. overall length
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 6 Cyl 3.5L | SE
Eastern Catalytic Converter, Eastern ECO II, Firewall Side, 49-State Legal - No CA Shipments
$200.44 List Price $236.52 Save $36.08 Availability: In Stock
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  • SKU#: EAST40552
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Replaces OE Number: 208A27Y10A
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 6 Cyl 3.5L | SE
Rating: (see review/s)

"Good! This is working perfect!. I think this is a part that you can use in instead of pay for a expensive one." posted by: Rulas on April 14, 2014

Eastern Catalytic Converter, Eastern Standard, Rear, 49-State Legal - No CA Shipments
$275.41 List Price $324.98 Save $49.57 Availability: In Stock
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  • SKU#: EAST40553
  • 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 2004 Nissan Altima submodels:
  • 6 Cyl 3.5L | 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
$107.15 List Price $138.67 Save $31.52 Availability: In Stock
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  • SKU#: M6699235HM
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 9 in. L x 5.13 in. W, 13 in. overall length
  • EO Number: Not applicable
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 6 Cyl 3.5L | SE
Magnaflow Catalytic Converter, Magnaflow 49-State Semi-Universal, Rear, 49-State Legal - No CA Shipments
$97.63 List Price $126.35 Save $28.72 Availability: In Stock
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  • Free Ground Shipping
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  • SKU#: M6699205HM
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 9 in. L x 5.13 in. W, 13 in. overall length
  • EO Number: Not applicable
  • Notes: Slip fit Inlet and outlet attachment type
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 4 Cyl 2.5L | S, SL, Base
Rating: (see review/s)

"After instalation my car ran great the parts arrived when they said they would." posted by: Hmc on July 16, 2012

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, 49-State Legal - No CA Shipments, Direct Fit
$382.59 List Price $571.03 Save $188.44 Availability: In Stock
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  • SKU#: M6650805
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Catalytic Converter Type: Catalytic Converter with Exhaust Manifold
  • Dimensions: 16.29 in. overall length
  • EO Number: Not applicable
  • Notes: Gaskets Included; Exhaust Manifold with Integrated Catalytic Converter Federal (Exc.CA)
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 4 Cyl 2.5L | S, SL, Base
Rating: (see review/s)

"Easy installation perfect fit good tonality with RPM increase with load expected more of a performance boost but getting better over time (breaking in). Also buying the Magnaflow resonator and muffler to have the complete system will result in best performance results. Came with all parts required." posted by: Rob on May 19, 2014 view all 2 reviews

Magnaflow Catalytic Converter, Magnaflow 49-State Direct Fit, 49-State Legal - No CA Shipments, Direct Fit
$329.24 List Price $426.07 Save $96.83 Availability: In Stock
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  • SKU#: M6693287
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • EO Number: Not applicable
  • Notes: Gaskets Included
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 4 Cyl 2.5L | S, SL, Base
Magnaflow Catalytic Converter, Magnaflow 49-State Direct Fit, 49-State Legal - No CA Shipments, Direct Fit
$361.90 List Price $468.34 Save $106.44 Availability: In Stock
  • Clearance Item
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  • SKU#: M6693361
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • EO Number: Not applicable
  • Notes: Gaskets Included, Without sensor ports
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
see more Fits the following 2004 Nissan Altima submodels:
  • 6 Cyl 3.5L | SE

More results for 2004 Nissan Altima Catalytic Converter

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 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... (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:

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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 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 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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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: