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Nissan Altima Catalytic Converter

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  • Top Sellers

Evan Fischer 48-State Direct Fit REPN960339 Catalytic Converter - 48-State Legal (Cannot Ship to CA or NY) Direct Fit - Front

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$199.99 $239.02 You Save $39.03 (16%)
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EVAN FISCHER 48-STATE LEGAL DIRECT FIT CATALYTIC CONVERTER (No CA or NY Shipments)
EPA Approved Catalyst with 5-Year/ 50,000-Mile Limited Warranty

This direct fit item is manufactured from high quality and durable stainless steel catalytic case for long lasting durability and for better protection.

OBD-II and EPA compliant catalytic converter; Designed for easy installation - it requires no cutting or welding! This is manufactured in accordance to industry standards to ensure product durability and reliability. Evan Fischer products are 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.

  • Brand SKU#: Evan Fischer REPN960339
  • Location: Front
  • Series: Evan Fischer 48-State Direct Fit
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 1-2 Business Days
  • Dimensions: 19 in. overall length
  • Inlet Type: Single (5-bolt welded flange)
  • Notes: Manifold Converter
  • Outlet Type: Single (2-bolt welded flange)
  • Oxygen Sensor Ports: 2
  • Warranty: 5-year or 50,000-mile limited warranty
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Fits the following Nissan Altima Years

  • 2002-2006 | S | 4 Cyl 2.5L
  • 2002-2006 | SL | 4 Cyl 2.5L
  • 2002-2006 | Base | 4 Cyl 2.5L
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Davico Exact Fit 18120 Catalytic Converter - 48-State Legal (Cannot Ship to CA or NY) Direct Fit - Rear

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$167.50 $695.01 You Save $527.51 (76%)
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DAVICO OE REPLACEMENT CATALYTIC CONVERTERS (48-STATE LEGAL – NO CA, NO NY)

Davico’s 48-state legal line of OE replacement catalytic converters is specifically designed to work like the original unit that came installed on your vehicle, delivering solid performance and an exact fit. Each and every one of Davico’s OE replacement catalytic converters is crafted within strict standards. Since 1987, Davico has specialized in manufacturing hard-to-find catalytic converters for the automotive aftermarket.

  • Proudly manufactured in America
  • Features OE-spec air tube connections and flanges
  • Exact fit

Notes:

48-state legal - not legal in New York or California; not for sale or use in New York or California; cannot be shipped to New York or California addresses.
  • Brand SKU#: Davico 18120
  • Location: Rear
  • Series: Davico Exact Fit
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 1-2 Business Days
  • Oxygen Sensor Included: No
  • Warranty: 2-year or 25,000-mile Davico limited warranty on catalyst emission properties and 5-year or 50,000-mile limited warranty on tube, shell and welds
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Fits the following Nissan Altima Years

  • 2002-2006 | S | 4 Cyl 2.5L
  • 2002-2006 | SL | 4 Cyl 2.5L
  • 2002-2006 | Base | 4 Cyl 2.5L
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Eastern ECO II 83166 Catalytic Converter, Aluminized Steel, Semi-Universal (Welding Required), 48-State Legal (Cannot Ship to CA or NY)

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$72.20 $86.91 You Save $14.71 (17%)
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EASTERN CATALYTIC CONVERTERS

  • MADE IN USA
  • Choose from direct-fit, semi-universal or universal catalytic converters
  • Direct-fit converters built to precise OE requirements with OE-quality flanges and flex assemblies – 100% guaranteed to fit your vehicle
  • Semi-universal converters designed according to application, but require some welding
  • Universal converters are not application-based and require welding – ideally suited for DIYers
  • Restore optimum converter efficiency and engine performance for less than the cost of your stock converter

Eastern's catalytic converters are made using premium materials and via state-of-the-art technologies to restore maximum catalytic efficiency and engine output to your vehicle for less than the cost of your stock converter. Eastern offers a wide range of direct-fit, semi-universal and universal converters so you can choose the right match for your vehicle. Eastern Catalytic is one of the automotive aftermarket’s top suppliers of catalytic converters, manifold converters and related components.

See product for application and installation details.

  • Brand SKU#: Eastern 83166
  • Location: Rear
  • Series: Eastern ECO II
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal (Welding Required)
  • Quantity Sold: Sold Individually
  • Tube Material: Aluminized Steel
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Inlet Type: Single (2.5 in. ID)
  • Notes: This is not an oe replacement catalytic converter. Please check dimensions to ensure proper fitment.
  • Outlet Type: Single (2.5 in. ID)
  • Oxygen Sensor Ports: No
  • Warranty: 5-year or 50,000-mile Eastern limited warranty
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Fits the following Nissan Altima Years

  • 1995-1999 | GLE | 4 Cyl 2.4L
  • 1995-1999 | GXE | 4 Cyl 2.4L
  • 1995-1999 | SE | 4 Cyl 2.4L
  • 1995-1999 | XE | 4 Cyl 2.4L
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Magnaflow OEM Grade (48-State) Semi-Universal 51235 Catalytic Converter - 48-State Legal (Cannot Ship to CA or NY) Semi-Universal (Welding Required)

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$132.23 $171.13 You Save $38.90 (23%)
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  • Not legal for use in California or New York
  • 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)
  • 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 48-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.

  • Brand SKU#: Magnaflow 51235
  • Series: Magnaflow OEM Grade (48-State) Semi-Universal
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Semi-Universal (Welding Required)
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Recommended Use: Performance Replacement
  • Anticipated Ship Out Time: 2-3 business days
  • Notes: 2.25 in. Inlet/Outlet
  • Warranty: Magnaflow 25,000 Mile Limited Warranty
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Fits the following Nissan Altima Years

  • 2002-2003 | Base | 6 Cyl 3.5L
  • 2002-2003 | S | 6 Cyl 3.5L
  • 2002-2005 | SE | 6 Cyl 3.5L
  • 2002-2005 | SL | 6 Cyl 3.5L
  • 2005 | SE-R | 6 Cyl 3.5L
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Walker Ultra 54782 Catalytic Converter - 48-State Legal (Cannot Ship to CA or NY) Direct Fit - Rear

$167.70 $398.76 You Save $231.06 (58%)
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Availability: In Stock, 3-4 business days
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WALKER - OE REPLACEMENT CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

Walker's OE replacement catalytic converters are rigorously engineered to deliver a perfect fit and optimal performance. Established in 1908, Walker is renowned in the automotive aftermarket for manufacturing a full line of exhaust system parts.

  • Higher loaded substrate
  • Engineered with premium stainless steel
  • Simply bolts on
  • Features thick, OE-quality hangers, flanges and brackets

Notes:

  • Non-CARB compliant/48-state legal - not for sale or use in New York or California; cannot be shipped to New York or California addresses.
  • Brand SKU#: Walker 54782
  • Location: Rear
  • Series: Walker Ultra
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 3-4 business days
  • Warranty: 5-year or 50,000-mile Walker limited warranty
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Fits the following Nissan Altima Years

  • 2007-2015 | S | 4 Cyl 2.5L
  • 2007-2015 | Base | 4 Cyl 2.5L
  • 2010-2015 | SL | 4 Cyl 2.5L
  • 2014-2015 | SV | 4 Cyl 2.5L
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Pacesetter 753006 Catalytic Converter - Manifold Converter, 48-State Legal (Cannot Ship to CA or NY) Direct Fit - Front

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$185.57 $185.57 You Save $0.00 (0%)
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Availability: In Stock, 2-3 business days
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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 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
  • 48-state legal (not legal in CA or NY)
  • Designed and manufactured in the USA
  • Brand SKU#: Pacesetter 753006
  • Location: Front
  • Type: Manifold Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Recommended Use: Performance Replacement
  • Anticipated Ship Out Time: 2-3 business days
  • Dimensions: Factory replacement
  • Notes: Gasket included
  • Warranty: 5-year or 50,000-mile Pacesetter limited warranty
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Fits the following Nissan Altima Years

  • 2007-2012 | Base | 4 Cyl 2.5L
  • 2007-2012 | S | 4 Cyl 2.5L
  • 2010-2012 | SL | 4 Cyl 2.5L
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Catco 1169 Catalytic Converter - Manifold Converter, 48-State Legal (Cannot Ship to CA or NY) Direct Fit - Front

$380.89 $850.00 You Save $469.11 (55%)
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Availability: In Stock, 2-3 business days
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CATCO DIRECT FIT CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

If a clogged or damaged converter’s got your emissions system on the fritz, trust CATCO’s direct fit catalytic converters to deliver the right solution. They’re corrosion-resistant, exact replacement parts crafted with a 409 stainless steel neck and shell perfect for extreme operating conditions. Since 1975, CATCO has specialized in developing high-tech catalytic converters for the automotive aftermarket.

  • Precise, vehicle-specific fit
  • Crafted with 409 stainless steel neck and shell for greater durability
  • Full-bodied construction from Standard Duty, Heavy Duty and Super Duty converters
  • Quick and simple to install
  • Converters that work with On-Board Diagnostic II systems available

Notes:

48-state legal - not legal in New York or California; not for sale or use in New York or California; cannot be shipped to New York or California addresses.
  • Brand SKU#: Catco 1169
  • Location: Front
  • Type: Manifold Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Tube Material: Stainless Steel
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 2-3 business days
  • Dimensions: 19 in. overall length
  • Warranty: 5-year or 50,000-mile Catco limited warranty on converter body with 25,000-mile limited warranty on emissions
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Fits the following Nissan Altima Years

  • 2007-2011 | Hybrid | 4 Cyl 2.5L
  • 2007-2012 | Base | 4 Cyl 2.5L
  • 2007-2012 | S | 4 Cyl 2.5L
  • 2008-2012 | SL | 4 Cyl 2.5L
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Customer Rating :

Benchmark W0133-1846325 Catalytic Converter - 48-State Legal (Cannot Ship to CA or NY)

$519.90 $741.81 You Save $221.91 (30%)
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Availability: In Stock, 2-3 business days
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BENCHMARK CATALYTIC CONVERTER

A high quality replacement for your part.

  • Brand SKU#: Benchmark W0133-1846325
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Quantity Sold: Sold Individually
  • Anticipated Ship Out Time: 2-3 business days
  • Warranty: 2-year limited warranty

Fits the following Nissan Altima Years

  • 2003 | Base | 4 Cyl 2.5L
  • 2003 | S | 4 Cyl 2.5L
  • 2003 | SL | 4 Cyl 2.5L
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Bosal 099-3781 Catalytic Converter - 48-State Legal (Cannot Ship to CA or NY) Direct Fit

$171.49 $552.79 You Save $381.30 (69%)
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Availability: In Stock, 1-2 Business Days
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BOSAL - OE REPLACEMENT CATALYTIC CONVERTERS (48-STATE LEGAL - NO CA, NO NY)

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

Notes:

  • 48-state legal - not for sale or use in California or New York; cannot be shipped to California or New York addresses.
  • Brand SKU#: Bosal 099-3781
  • Location: Rear
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Aluminized Steel
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 1-2 Business Days
  • Warranty: 5-year or 25,000-mile Bosal limited warranty
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Fits the following Nissan Altima Years

  • 1995-2001 | GLE | 4 Cyl 2.4L
  • 1995-2001 | GXE | 4 Cyl 2.4L
  • 1995-2001 | SE | 4 Cyl 2.4L
  • 1995-2001 | XE | 4 Cyl 2.4L
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Customer Rating :

Dorman 674-959 Catalytic Converter - Manifold Converter, 48-State Legal (Cannot Ship to CA or NY) Direct Fit

$350.95 $387.13 You Save $36.18 (9%)
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Availability: In Stock, 1-2 Business Days
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DORMAN OE REPLACEMENT CATALYTIC CONVERTERS (48-STATE LEGAL – NO CA, NO NY)

Reduce the pollutants your vehicle releases with Dorman’s OE replacement catalytic converters. Since 1918, Dorman Products has supplied the automotive aftermarket with high-quality replacement parts, hardware and fasteners.

  • Quality ensured by extensive testing processes
  • Delivers leak-free performance
  • Cast iron or stainless tubular steel protects against cracks and warping
  • Comes with heat-shield (depending on application)

Notes:

48-state legal - not legal in New York or California; not for sale or use in New York or California; cannot be shipped to New York or California addresses.
  • Brand SKU#: Dorman 674-959
  • Type: Manifold Converter
  • Emissions: 48-State Legal (Cannot Ship to CA or NY)
  • Product Fit: Direct Fit
  • Quantity Sold: Assembly
  • Tube Material: Stainless Steel
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: 1-2 Business Days
  • Deals: Clearance
  • Warranty: 5-year or 50,000-mile Dorman limited warranty
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Fits the following Nissan Altima Years

  • 2005-2009 | S | 4 Cyl 2.5L
  • 2005-2008 | SL | 4 Cyl 2.5L
  • 2006-2009 | Base | 4 Cyl 2.5L
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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.

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