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Nissan Altima Catalytic Converter

We have 10 Items In-stock. Select a year to continue.
$180.89 List Price $213.45 Save $32.56 Availability: In Stock
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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
  • SKU#: REPN960310
  • Brand: Evan Fischer
  • Fit Note: 5-Speed, Automatic Transmission
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: 41.75 in. overall length
(see more)
Fits the following Nissan Altima Years:
  • 2006 | 6 Cyl 3.5L | S
  • 2005-2006 | 6 Cyl 3.5L | SE, SL
$67.28 List Price $79.39 Save $12.11 Availability: In Stock
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EASTERN ECO II SERIES 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 II Series Catalytic Converter is made specifically for most complex or second generation on board diagnostic (OBD II) systems. It features wash coats 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.

The Eastern ECO II Series Catalytic Converter's features in a nutshell:

  • 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

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: EAST83165
  • Brand: Eastern
  • 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
(see more)
Fits the following Nissan Altima Years:
  • 2002-2006 | 4 Cyl 2.5L | Base, S, SL
Rating: (see review/s)

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

"This converter appears to be well built, and solved my P0240 (inefficient catalytic converter) code problem immediately. Can't beat the price and free, quick (3 days) shipping. If your existing front pipe is in good shape, this converter is well worth the hassle of adapting it to fit." posted by: Pistole on September 11, 2010 view all 5 reviews

$107.15 List Price $138.67 Save $31.52 Availability: In Stock
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  • 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.

  • SKU#: M6699235HM
  • Brand: Magnaflow
  • 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
(see more)
Fits the following Nissan Altima Years:
  • 2005 | 6 Cyl 3.5L | SE-R
  • 2002-2005 | 6 Cyl 3.5L | SE, SL
(see more)
$420.69 List Price $838.32 Save $417.63 Availability: In Stock
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DAVICO EXACT FIT 49-STATE MANIFOLD CATALYTIC CONVERTER

Do not settle for a universal or generic catalytic converter when you can replace your old or failing catalytic converter with a direct fit unit from Davico Manufacturing. This company has been producing catalytic converters since 1987 and is known for producing direct fit aftermarket catalytic converters that are at par with OEM units in terms of quality, specifications, and performance. Their Exact Fit Catalytic Converter is sized specifically for each application and uses the right substrate to meet the aftermarket performance standards for catalytic converters.

Features:
  • Direct fit - made using reliable computer-controlled fabrication system for flawless replication
  • Manufactured using strict OEM and emission control specifications
  • No cutting, sliding, clamping, or welding required for easier installation
Specifications:
  • 5-bolt fixed flange inlet
  • 2-bolt fixed flange outlet
  • 2 oxygen sensor ports
  • Round body
  • Includes gasket(s)

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: DAV18122
  • Brand: Davico
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
(see more)
Fits the following Nissan Altima Years:
  • 2002-2006 | 4 Cyl 2.5L | Base, S, SL
Rating: (see review/s)

"This was puchased to replace a converter on a 2002 Altima.The product description is not accurate. It says that it comes with gaskets and spring bolt kits when necessary, well it did not come with it and I had to purchase the items from Nissan and from the local auto parts store. As for the unit itself, it is not an exact replacement as this unit does not require the rear or botton heat shield, only the top shield and the welded on bolts had to be adjusted in order for the top heat shield to attach to it. As for the unit itself, it works well." posted by: DanDaMan on August 29, 2010

$348.90 List Price $771.80 Save $422.90 Availability: In Stock
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CATCO CATALYTIC CONVERTER ASSEMBLY

Catco's catalytic converters are designed with 409 stainless steel pipes and shell for longer life.

Specifications
  • 5-bolt welded flange inlet
  • 2-bolt welded flange with gasket stub outlet
  • Manifold type assembly with one catalytic converter
  • Oval body
  • 19.25 in. overall length
  • 4-1 inlet and single outlet configuration
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: CAT1195
  • Brand: Catco
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 19.25 in. overall length
(see more)
Fits the following Nissan Altima Years:
  • 2002-2006 | 4 Cyl 2.5L | Base, S, SL
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$62.37 List Price $152.72 Save $90.35 Availability: In Stock
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WALKER CATALYTIC CONVERTER, UNIVERSAL

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.

Features
  • Higher loaded substrate
  • Easy bolt-on installation
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: WK15036
  • Brand: Walker
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Dimensions: 13.25 in. overall length
  • Warranty: 5-year or 50,000-mile Walker limited warranty
 
Fits the following Nissan Altima Years:
  • 1993-1994 | 4 Cyl 2.4L | GLE, GXE, SE, XE
  • 1993 | 4 Cyl 2.4L | Base
Rating: (see review/s)

"the cat converter is of great quality and was easy to install. I had an exhaust store install it and they wanted to know where I got it." posted by: ZZ 1951 me myself on March 30, 2014

$329.36 List Price $388.64 Save $59.28 Availability: In Stock
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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 mandrel-bent stainless steel and feature perfect fit machined steel flanges. Pacesetter, known for their exhausts, has been a leading manufacturer of performance headers and exhaust systems since their inception in 1974.
  • Designed to replace poorly performing OEM converter
  • Streamlines and improves exhaust flow via honeycomb catalyst
  • Made from fine mandrel-bent stainless steel
  • Complies with EPA/CARB regulations
  • Bolts on for quick and easy installation (on most vehicles)
  • Backed by a 5-year/50,000-mile warranty
  • Direct fit by vehicle year, make and model
  • 49-state legal (not legal in CA)
  • Designed and manufactured in the USA
  • SKU#: P40753004
  • Brand: Pacesetter
  • Fit Note: Sedan, FWD
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalyst Substrate Material: Ceramic honeycomb
  • Dimensions: Factory replacement
(see more)
Fits the following Nissan Altima Years:
  • 2006 | 4 Cyl 2.5L | Base
  • 2005-2006 | 4 Cyl 2.5L | S, SL
$136.29 List Price $552.79 Save $416.50 Availability: In Stock
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BOSAL CATALYTIC CONVERTER

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

Specifications
  • Flange inlet
  • Flange outlet
  • Oval body
  • 31 in. L x 9 in. W x 5 in. H
  • Single inlet and outlet configuration
Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: BO0993781
  • Brand: Bosal
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Dimensions: 31 in. L x 9 in. W x 5 in. H
  • Replaces OE Number: 208004E826, 208000L725, 2080053U25, 2080053U25, 2080040U25
(see more)
Fits the following Nissan Altima Years:
  • 1995-2001 | 4 Cyl 2.4L | GLE, GXE, SE, XE
$465.00 List Price $1,395.00 Save $930.00 Availability: In Stock
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BENCHMARK MANIFOLD CATALYTIC CONVERTER

Notes: Exhaust Manifold With Converter

Benchmark catalytic converters are considered to be the industry's standard replacement catalytic converter. It is the recognized leader in fitment and durability. It features perfect fit and repeatability and its performance results are continually monitored by Benchmark's internal emissions laboratory to insure quality loadings which eliminate OBDII issues caused by many universal catalysts.

Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: BEN72594
  • Brand: Benchmark
  • Quantity Sold: Sold Individually
  • Tube Material: Steel
  • Anticipated Ship Out Time: 1-2 Business Days
  • Catalytic Converter Type: Catalytic Converter with Exhaust Manifold
  • Warranty: 5-year or 50,000-mile Benchmark limited warranty
 
Fits the following Nissan Altima Years:
  • 2008-2012 | 4 Cyl 2.5L | SL
  • 2007-2012 | 4 Cyl 2.5L | Base, S
(see more)
$349.10 List Price $411.94 Save $62.84 Availability: In Stock
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DORMAN CATALYTIC CONVERTER

Dorman catalytic converter is manufactured from high-quality materials. This catalytic converter provides the perfect replacement for your worn-out factory piece. It is re-engineered with improvements for better reliability compared to the original part.

Specifications:
  • Catalytic converter with exhaust manifold
  • Round body
  • 1 oxygen sensor port
  • Replaces OE number 14002-JA91E
  • Includes 3 studs, 3 nuts, 1 manifold gasket, and 1 flange gasket
Note: Not legal for sale in California and New York; Cannot be shipped to CA or NY addresses.

  • SKU#: RB674933
  • Brand: Dorman
  • Fit Note: With California Emissions
  • Tube Material: Stainless Steel
  • Anticipated Ship Out Time: Same day - 1 business day
  • Catalytic Converter Type: Catalytic Converter with Exhaust Manifold
  • Warranty: Lifetime Dorman limited warranty
 
Fits the following Nissan Altima Years:
  • 2006-2012 | 4 Cyl 2.5L | Base, S, SL
  • 2007-2011 | 4 Cyl 2.5L | Hybrid
View Less
Select more Nissan Altima parts under Catalytic Converters & Components from list below.

Now that most states enforce strict guidelines on exhaust emissions, it is imperative that you have a high-performance catalytic converter in your exhaust system. Simply, this component ensures that your emissions are as less damaging as they can be to the environment. A Nissan Altima catalytic converter works in conjunction with your engine; the engine must have the right temperature and proper air-fuel mixture in order for the catalytic converter to not clog. Trapped contaminants also render the converter inefficient. Without a good catalytic converter, your exhaust will be billowing out black or white smoke, which is a prelude to a failing score in the emission test.

Frequently Asked Questions

Ask APW
  • How can a new catalytic converter improve the emission of a Nissan Altima?
    Answer: A catalytic converter is just one of the components responsible for a vehicle's emission. If the engine is bad and underperforming, or if the wheels lack enough air pressure, the general emission will be affected. Also, contaminants in the converter will affect the part's performance; this is why the clogging of unburnt fuel in the converter must be prevented. If a bad emission is caused by a deteriorated cat, then a new one will certainly improve the quality of the car's emission. A new cat will be able to efficiently convert the by-products of burnt fuel into less toxic substances.
  • How can a Nissan Altima catalytic converter provide a lasting performance?
    Answer: A catalytic converter performs better with quality fuel and excellent vehicle maintenance. Using only lead-free gasoline will definitely lessen contaminant buildup in the cat. Also, installing the cat away from a high-temperature area underneath the car will prevent faster performance deterioration. To make a cat converter last longer when it comes to performance, regular tune-ups of the induction, ignition, and engine systems must be conducted.
  • How can the efficiency of a catalytic converter on a Nissan Altima be determined?
    Answer: There is a specific formula in measuring the efficiency of a catalytic converter, and the variables include the amount of gas coming in and coming out of the converter. Basically, the in level is deducted from the out level, and the difference is divided by the out level and the result is multiplied by 100. Thus, a catalytic converter with an upstream emission of 75 and a downstream of 5 will have an overall efficiency of 93%. The efficiency of a catalytic converter can be determined by getting an emission test at a local testing center accredited by the state.
  • How often should the catalytic converter on a Nissan Altima be replaced?
    Answer: A Nissan Altima catalytic converter must be replaced as soon as its efficiency falls below 90%. Years of driving actually deteriorates the catalytic converter's efficiency, so it is expected that a replacement is necessary four years from the purchase date of the vehicle. Also, black or white smoke coming out of the tailpipe is a good sign for a cat replacement. The emergence of dirty smoke can be stalled by ensuring that the engine has an adequate air-fuel ratio, the injectors provide excellent fuel atomization, and the engine cylinders provide the same output, among others.