1981 Nissan Maxima Catalytic Converters

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1981 Nissan Maxima in Top Shape with a Quality Catalytic Converter

When it comes to maintaining or upgrading your 1981 Nissan Maxima, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Catalytic Converter for your Maxima. We currently carry a top Catalytic Converter in stock that is built to last. Whether you’re replacing a damaged Catalytic Converter or looking to upgrade, our selection for the 1981 Nissan Maxima ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Exhaust Tips to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1981 Nissan Maxima running smoothly and looking great.

Essential 1981 Nissan Maxima Catalytic Converters

Walker – CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25"Outlet (ID) (Part No.81327)

CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25"Outlet (ID)

from

$396.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat universal catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.

Product Features:
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MagnaFlow – California Grade Carb Compliant Universal Catalytic Converter (Part No.441004)

California Grade Carb Compliant Universal Catalytic Converter

from

$548.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 441004. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
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MagnaFlow – Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter (Part No.51108)

Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter

from

$409.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51108. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 2002-2003 Nissan Maxima 3.5L & 2002-2004 INFINITI I35 3.5L. MagnaFlow 51108 includes (2) Flange Gaskets and interchanges with OE parts 20800-5Y525. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Features:
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Walker – Ultra EPA Direct Fit Catalytic Converter Overall Length 10.500 IN (Part No.16397)

Ultra EPA Direct Fit Catalytic Converter Overall Length 10.500 IN

from

$599.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra direct-fit catalytic converters are available for import and domestic OBDII (1996 and newer) vehicles. Count on Walker Ultra converters for industry-leading fit and function.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN — Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and/or welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES — OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE — Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN — Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
See More

Walker – CalCat CARB Direct Fit Catalytic Converter Overall Length 9.000 IN (Part No.82584)

CalCat CARB Direct Fit Catalytic Converter Overall Length 9.000 IN

from

$860.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.

Product Features:
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Walker – Ultra EPA Direct-Fit Catalytic Converter (Part No.54686)

Ultra EPA Direct-Fit Catalytic Converter

from

$777.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN – Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE – Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
See More

MagnaFlow – Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter (Part No.49905)

Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter

from

$664.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49905. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 1999-2001 Nissan Maxima 3.0L & 1999-2001 INFINITI I30 3.0L. MagnaFlow 49905 interchanges with OE parts 20020-3Y400, 20020-4L800, B08A0-4L700. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Features:
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MagnaFlow – California Grade Carb Compliant Universal Catalytic Converter (Part No.457105)

California Grade Carb Compliant Universal Catalytic Converter

from

$363.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 457105. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
See More

MagnaFlow – Oem Grade Federal / Epa Compliant Universal Catalytic Converter (Part No.51206)

Oem Grade Federal / Epa Compliant Universal Catalytic Converter

from

$211.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51206. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion welds greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Product Features:
See More

Walker – CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5" Outlet (ID) (Part No.84407)

CalCat CARB Universal Catalytic Converter 2.5" Inlet (ID) 2.5" Outlet (ID)

from

$301.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat universal catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.

Product Features:
See More

Walker – CalCat CARB Direct Fit Catalytic Converter (Part No.84194)

CalCat CARB Direct Fit Catalytic Converter

from

$837.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.

Product Features:
See More

MagnaFlow – California Grade Carb Compliant Direct-Fit Catalytic Converter (Part No.551128)

California Grade Carb Compliant Direct-Fit Catalytic Converter

from

$1144.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 551128. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 2007-2014 Nissan Altima 3.5L & 2009-2014 Nissan Maxima 3.5L. MagnaFlow 551128 includes (5) Nuts, (2) Bolts and interchanges with OE parts 208A3-9N70A, 208A3-JA21A, 208A3-ZN80A. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Durable 308 stainless steel MIG welds
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
See More

MagnaFlow – California Grade Carb Compliant Universal Catalytic Converter (Part No.444104)

California Grade Carb Compliant Universal Catalytic Converter

from

$356.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 444104. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
See More

MagnaFlow – Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter (Part No.22760)

Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter

from

$252.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 22760. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. MagnaFlow 22760 includes (2) Flange Gaskets and interchanges with OE parts 20800-0B725, 20800-1B025, 20800-7B225, 20802-57G25, 20802-57G26, 20802-57G27, 20802-57G28, 20802-59G25, 20802-59G26, 20802-72P85, 20802-72P86, 20802-72P87, 20802-72P88. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Product Features:
See More

MagnaFlow – Oem Grade Federal / Epa Compliant Universal Catalytic Converter (Part No.51236)

Oem Grade Federal / Epa Compliant Universal Catalytic Converter

from

$214.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51236. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion welds greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Product Features:
See More

MagnaFlow – California Grade Carb Compliant Direct-Fit Catalytic Converter (Part No.557234)

California Grade Carb Compliant Direct-Fit Catalytic Converter

from

$1334.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 557234. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 2009-2014 Nissan Maxima 3.5L. MagnaFlow 557234 includes (2) Bolts, (1) Flange Gasket, (2) Crush Ring Gaskets and interchanges with OE parts 20020-9DC0A. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Durable 308 stainless steel MIG welds
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Durable 308 stainless steel MIG welds
See More

MagnaFlow – Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter (Part No.51207)

Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter

from

$662.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51207. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. MagnaFlow 51207 includes (5) Nuts, (5) Bolts, (1) Flange Gasket, (2) Split Lock Washers, (1) Crush Ring Gasket and interchanges with OE parts 208A1-7Y200, 208A1-8Y100, 208A1-CA100, 208A1-CB200. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

Product Features:
See More

Walker – Ultra EPA Direct Fit Catalytic Converter Overall Length 12.375 IN (Part No.16033)

Ultra EPA Direct Fit Catalytic Converter Overall Length 12.375 IN

from

$422.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra direct-fit catalytic converters are available for import and domestic OBDII (1996 and newer) vehicles. Count on Walker Ultra converters for industry-leading fit and function.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN — Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and/or welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES — OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE — Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN — Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
See More

Walker – Ultra EPA Universal Catalytic Converter – 2" Inlet (ID) 2" Outlet (ID) (Part No.93236)

Ultra EPA Universal Catalytic Converter - 2" Inlet (ID) 2" Outlet (ID)

from

$172.99
Product Features:
  • EPA COMPLIANT – For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES – OE-style high-technology wash coat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • DURABLE – Features stainless-steel body with aluminized pipe and heat shields for durability
  • FLEXIBLE SOLUTION – Customizable design features expandable bushings for easy fitment and may require specialized fabrication and welding for installation
  • OE-STYLE DESIGN – Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE – Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 50,000-mile/80,000-kilometer structural integrity limited warranty. Visit Walkerexhaust.com for details.
See More

MagnaFlow – California Grade Carb Compliant Direct-Fit Catalytic Converter (Part No.551129)

California Grade Carb Compliant Direct-Fit Catalytic Converter

from

$1205.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 551129. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 2009-2014 Nissan Maxima 3.5L. MagnaFlow 551129 includes (8) Nuts, (5) Bolts, (1) Crush Ring Gasket and interchanges with OE parts 208A2-9N90A. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
See More

Dorman – Direct Fit Catalytic Converter: No Fabrication Needed, EPA Compliant (Part No.679-517)

Direct Fit Catalytic Converter: No Fabrication Needed, EPA Compliant

from

$483.99
This catalytic converter is precision-engineered to match the original equipment fit and function on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this catalytic converter is designed to match the fit and performance of the original equipment on specific vehicles
  • Durable construction – manufactured within strict tolerances for reliable longevity
  • Cost-effective solution – offers original equipment functionality at a competitive price
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

MagnaFlow – California Grade Carb Compliant Direct-Fit Catalytic Converter (Part No.444311)

California Grade Carb Compliant Direct-Fit Catalytic Converter

from

$1097.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 444311. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 2002-2003 Nissan Maxima 3.5L & 2002-2004 INFINITI I35 3.5L. MagnaFlow 444311 includes (2) Nuts, (2) Bolts, (2) Flange Gaskets, (2) Split Lock Washers and interchanges with OE parts B08A1-5Y700. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:
  • Durable 308 stainless steel MIG welds
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
See More

Walker – CalCat CARB Direct Fit Catalytic Converter 2.525" Outlet (OD) (Part No.84249)

CalCat CARB Direct Fit Catalytic Converter 2.525" Outlet (OD)

from

$607.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.

Product Features:
See More

MagnaFlow – Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter (Part No.27503)

Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter

from

$1104.00
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 27503. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 1995-1998 Nissan Maxima 3.0L & 1996-1999 INFINITI I30 3.0L. MagnaFlow 27503 includes (1) Flange Gasket, (2) Crush Ring Gaskets and interchanges with OE parts 14012-41U21, 14012-55U00. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Product Features:
  • Durable 308 stainless steel MIG welds
  • Simplifies installation with essential gaskets and hardware being included in the box
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Durable 308 stainless steel MIG welds
See More

MagnaFlow – Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter (Part No.50833)

Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter

from

$499.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 50833. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. MagnaFlow 50833 includes (1) Flange Gasket, (1) Crush Ring Gasket and interchanges with OE parts 208A2-7Y100, 208A2-7Y10A, 208A2-7Y600, 208A2-7Y60A, 208A2-8J112, 208A2-8J120, 208A2-8J12A. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.

Product Features:
See More

Walker – Ultra EPA Direct Fit Catalytic Converter Overall Length 38.625 IN (Part No.54750)

Ultra EPA Direct Fit Catalytic Converter Overall Length 38.625 IN

from

$771.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra direct-fit catalytic converters are available for import and domestic OBDII (1996 and newer) vehicles. Count on Walker Ultra converters for industry-leading fit and function.

Product Features:
  • EPA COMPLIANT — For use on OBDII vehicles, 1996 and newer. Not legal for sale or use in CA, CO & NY. Legal in ME on EPA Federal Emission Equipped Vehicles only. Consult your state’s aftermarket converter regulations for details.
  • DIRECT-FIT DESIGN — Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication and/or welding
  • KEEPS CHECK ENGINE LIGHT OFF FOR EMISSIONS CODES — OE-style high-technology washcoat and optimal precious metal load delivers required reduction in tailpipe emissions to match vehicle application
  • STRONG AND DURABLE — Features thick OE-style flanges, hangers and brackets for strength and durability
  • OE-STYLE DESIGN — Features aluminized heat shields when originally equipped, to match OE design, protecting the undercarriage from heat created by the converter
  • BUY WITH CONFIDENCE — Backed by Walker’s 25,000-mile/40,000-kilometer emissions and 5-year 50,000-mile/80,000-kilometer structural integrity warranty. Visit Walkerexhaust.com for details.
See More

Dorman – Direct Fit Catalytic Converter: No Fabrication Needed, EPA Compliant (Part No.679-507)

Direct Fit Catalytic Converter: No Fabrication Needed, EPA Compliant

from

$599.99
This catalytic converter is precision-engineered to match the original equipment fit and function on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this catalytic converter is designed to match the fit and performance of the original equipment on specific vehicles
  • Durable construction – manufactured within strict tolerances for reliable longevity
  • Cost-effective solution – offers original equipment functionality at a competitive price
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
See More

MagnaFlow – Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter (Part No.49365)

Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter

from

$447.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49365. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 2002-2003 Nissan Maxima 3.5L & 2002-2004 INFINITI I35 3.5L. MagnaFlow 49365 includes (2) Crush Ring Gaskets and interchanges with OE parts 208A2-5Y826, 208A2-5Y827. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

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Most Popular Catalytic Converter for 1981 Nissan Maximas

Enhance your 1981 Nissan Maxima with this popular Catalytic Converter we have in stock, for $387.99.

Walker – CalCat CARB Universal Catalytic Converter 2" Inlet (ID) 2"Outlet (ID) (Part No.81326)

CalCat CARB Universal Catalytic Converter 2" Inlet (ID) 2"Outlet (ID)

from

$387.99
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat universal catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.

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FAQs for 1981 Nissan Maxima Catalytic Converters

What’s the price range for 1981 Nissan Maxima Catalytic Converters?

We currently have just one Catalytic Converters for the 1981 Nissan Maxima in stock: CalCat CARB Universal Catalytic Converter 2" Inlet (ID) 2"Outlet (ID) and it costs $387.99.

Does Advance Auto Parts sell Catalytic Converters for other Nissan Maxima model years?

Yes, we carry Catalytic Converters for 38 model years of Nissan Maximas between 1982 and 2021. The following model years are the most popular for Catalytic Converter purchases: 2021, 2020, 2019, 2018, 2017, 2016, 2014, 2013, and 2012.

Does Advance Auto Parts sell Catalytic Converters for any other 1981 Nissan models?

Yes. We stock Catalytic Converters for 6 other popular 1981 Nissan models. Some of the most popular are 1981 200SX Catalytic Converters, 1981 310 Catalytic Converters, 1981 720 Catalytic Converters, 1981 210 Catalytic Converters, and 1981 280ZX Catalytic Converters.

What types of Catalytic Converters do you sell for my 1981 Nissan Maxima?

We currently have just 1 Catalytic Converter in stock for a 1981 Nissan Maxima, and as of 6/2/26, it is a Catalytic Converter.

Can I get help with 1981 Nissan Maxima Catalytic Converter orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Nissan Catalytic Converters and more.

What is your return policy for Nissan Maxima Catalytic Converters?

Advance Auto Parts keeps returns simple. For new Nissan Maxima Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.