1998 Audi A4 Catalytic Converters
Keep Your 1998 Audi A4 in Top Shape with Quality Catalytic Converters
Whether you’re repairing or upgrading your Catalytic Converter, using high-quality parts is key to keeping your 1998 Audi A4 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Catalytic Converters. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Top-Rated Catalytic Converters from Trusted Brands
Looking for a reliable Catalytic Converter? We’ve got you covered with options from brands you know and trust like Magnaflow. For example, Magnaflow Catalytic Converters start at just $188.99 with an average 4.1 star rating. With over 25 reviews and a solid 3 star average, you can shop with confidence knowing other Audi A4 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1998 Audi A4 Catalytic Converter at Advance Auto Parts is around $450.76, with a range that starts at $179.99 and goes up to $1,121.99. With 14 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Ultra EPA Universal Catalytic Converter – 2" Inlet (ID) 2" Outlet (ID), California Universal Catalytic Converter – 2.25", and OEM Grade Universal Catalytic Converter – 2.00" start at just $194.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Catalytic Converter, don’t forget to check out other key components like Exhaust Fittings and Exhaust Tips. At Advance Auto Parts, we’re here to help you keep your 1998 Audi A4 in peak condition, inside and out.
Find Your Specific 1998 Audi A4 Catalytic Converters
Looking for the perfect Catalytic Converter for your 1998 Audi A4? You’re in the right place. Below, you’ll find links to various types of Catalytic Converters that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Catalytic Converters, ensuring durability and a precise fit for your Audi A4. Whether you’re driving a 1998 model or another popular model year like
2008,
2009,
2010,
2011,
2012,
2013,
2014,
2015, and
2016, we’ve got you covered. Purchasing Catalytic Converters from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Catalytic Converters that fit your vehicle.
Essential 1998 Audi A4 Catalytic Converters
MagnaFlow – Catalytic Converter: Universal, 2.5" T2 Front (Part No.99355HM)
from
$188.99
MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99355HM helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design (cutting and welding is required). With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – HM Grade Universal Catalytic Converter – 2.25" (Part No.99305HM)
from
$188.99
MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99305HM helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
Walker – Ultra EPA Universal Catalytic Converter – 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.93271)
from
$204.99
Product Features:
See More
- 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.
MagnaFlow – Direct-Fit OEM Grade Catalytic Converter (Part No.51644)
from
$1121.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51644. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 1998-2005 Volkswagen Passat, 1997-2005 Audi A4 Quattro, and more, this direct-fit catalytic converter also interchanges with OE parts 8E0 131 089 DX and 4B0 254 200 X, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit California Grade Catalytic Converter (Part No.444333)
from
$1316.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 444333. DIY installation is easy with the proper tools, no cutting or welding required. With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. Designed to fit the 2000-2005 Volkswagen Passat, 2000-2001 Audi A6 Quattro, and more, this direct-fit catalytic converter also interchanges with OE parts 4B0 254 500 LX and 4B0 253 011 PX, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit California Grade Catalytic Converter (Part No.5561163)
from
$1897.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5561163. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2005-2009 Audi A4 Quattro and 2005-2009 Audi A4, this direct-fit catalytic converter also interchanges with OE part 8E0 254 200 QX. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit OEM Grade Catalytic Converter (Part No.51461)
from
$1007.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51461. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2002-2004 Audi A4 Quattro and 2002-2004 Audi A4, this direct-fit catalytic converter also interchanges with OE parts 8E0 254 505 BX and 8E0 254 505 CX, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – OEM Grade Universal Catalytic Converter – 2.25" (Part No.51355)
from
$202.99
MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51355 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design (cutting and welding is required). With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – California Universal Catalytic Converter – 2.00" (Part No.408004)
from
$298.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 408004 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – OEM Grade Universal Catalytic Converter – 2.25" (Part No.51235)
from
$197.99
MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51235 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit HM Grade Catalytic Converter (Part No.22962)
from
$682.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 22962. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 1998-2000 Volkswagen Passat, 1996-1999 Audi A4 Quattro, and more, this direct-fit catalytic converter also interchanges with OE parts 8D0 253 057 KX and 8D0 253 057 BX, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit OEM Grade Catalytic Converter (Part No.52352)
from
$1212.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52352. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2011-2017 Audi Q5, 2009-2016 Audi A4, and more, this direct-fit catalytic converter also interchanges with OE part 8K0 254 252 KX. Hardware is included to eliminate the hassle of working with corroded factory parts. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
Walker – CalCat CARB Universal Catalytic Converter – 2.25" Inlet (OD) 2" Outlet (OD) (Part No.83304)
from
$621.99
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.
Product Features:
See More
Product Features:
- CARB COMPLIANT – For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state’s aftermarket converter regulations.
- SUPERIOR TECHNOLOGY – Optimal high technology wash coat formulated to deliver superior performance (as compared to EPA-compliant converters)
- CONSISTENT PERFORMANCE – Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
- 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
- BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
Walker – CalCat CARB Universal Catalytic Converter – 2" Inlet (ID) 2" Outlet (ID) (Part No.81660)
from
$509.99
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.
Product Features:
See More
Product Features:
- CARB COMPLIANT – For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state’s aftermarket converter regulations.
- SUPERIOR TECHNOLOGY – Optimal high technology wash coat formulated to deliver superior performance (as compared to EPA-compliant converters)
- CONSISTENT PERFORMANCE – Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
- 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
- BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
Walker – Ultra EPA Direct-Fit Catalytic Converter (Part No.16595)
from
$781.99
Product Features:
See More
- 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.
Walker – Ultra EPA Direct-Fit Catalytic Converter (Part No.16087)
from
$678.99
Product Features:
See More
- 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.
MagnaFlow – Direct-Fit California Grade Catalytic Converter (Part No.4561062)
from
$1035.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4561062. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2001-2005 Volkswagen Passat, 2001-2005 Audi A4 Quattro, and more, this direct-fit catalytic converter also interchanges with OE parts 8E0 131 089 DX and 4B0 254 200 X, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – California Universal Catalytic Converter – 2.00" (Part No.418004)
from
$438.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 418004 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit OEM Grade Catalytic Converter (Part No.49163)
from
$678.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49163. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2005-2009 Audi A4 Quattro and 2005-2009 Audi A4, this direct-fit catalytic converter also interchanges with OE part 8E0 254 200 QX. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – California Universal Catalytic Converter – 2.25" (Part No.456205)
from
$854.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 456205. The Universal design allows the part to fit a wide array of vehicles, cutting and welding required, and the stainless steel construction of this spun” Body catalytic converter is highly resistant to corrosion. The single laser fusion weld of the spun” Body 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – California Universal Catalytic Converter – 2.00" (Part No.444204)
from
$428.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 444204 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit California Grade Catalytic Converter (Part No.5561352)
from
$1701.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5561352. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2009-2016 Audi A4, 2009-2016 Audi A4 Quattro, and more, this direct-fit catalytic converter also interchanges with OE part 8K0 254 252 KX. Hardware is included to eliminate the hassle of working with corroded factory parts. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – OEM Grade Universal Catalytic Converter – 2.00" (Part No.51204)
from
$194.99
MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51204 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – California Universal Catalytic Converter – 2.25" (Part No.5461335)
from
$1333.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 5461335. The Universal design allows the part to fit a wide array of vehicles (cutting and welding required), and the stainless steel construction of this spun body catalytic converter is highly resistant to corrosion. The single laser fusion weld of the spun body 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit OEM Grade Catalytic Converter (Part No.51462)
from
$1078.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51462. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2002-2004 Audi A4 Quattro and 2002-2004 Audi A4, this direct-fit catalytic converter also interchanges with OE parts 8E0 254 554 CX and 8E0 254 554 DX, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
Walker – Ultra EPA Universal Catalytic Converter – 2.5" Inlet (ID) 2.5" Outlet (ID) (Part No.93263)
from
$221.99
Product Features:
See More
- 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.
MagnaFlow – Direct-Fit HM Grade Catalytic Converter (Part No.24190)
from
$646.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 24190. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 2005-2009 Audi A4 Quattro and 2005-2009 Audi A4, this direct-fit catalytic converter also interchanges with OE part 8E0 254 200 QX. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
Walker – CalCat CARB Universal Catalytic Converter – 2" Inlet (ID) 2"Outlet (ID) (Part No.82526)
from
$502.99
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.
Product Features:
See More
Product Features:
- CARB COMPLIANT – For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state’s aftermarket converter regulations.
- SUPERIOR TECHNOLOGY – Optimal high technology wash coat formulated to deliver superior performance (as compared to EPA-compliant converters)
- CONSISTENT PERFORMANCE – Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
- 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
- BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
Popular 1998 Audi A4 Catalytic Converters Categories
Most Popular Catalytic Converters for 1998 Audi A4s
Enhance your 1998 Audi A4 with one of the 14 Catalytic Converters we have in stock, starting at just $179.99.
MagnaFlow – HM Grade Universal Catalytic Converter – 2.25" (Part No.99305HM)
from
$188.99
MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99305HM helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – HM Grade Universal Catalytic Converter – 2.00" (Part No.99204HM)
from
$179.99
MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99204HM helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design (cutting and welding is required). With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
Walker – Ultra EPA Universal Catalytic Converter – 2" Inlet (ID) 2" Outlet (ID) (Part No.93251)
from
$197.99
Product Features:
See More
- 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.
MagnaFlow – California Universal Catalytic Converter – 2.25" (Part No.418005)
from
$438.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 418005 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – OEM Grade Universal Catalytic Converter – 2.00" (Part No.51204)
from
$194.99
MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51204 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit OEM Grade Catalytic Converter (Part No.51644)
from
$1121.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51644. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 1998-2005 Volkswagen Passat, 1997-2005 Audi A4 Quattro, and more, this direct-fit catalytic converter also interchanges with OE parts 8E0 131 089 DX and 4B0 254 200 X, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit California Grade Catalytic Converter (Part No.4481605)
from
$1035.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4481605. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 1998-2000 Volkswagen Passat, 1997-2000 Audi A4 Quattro, and more, this direct-fit catalytic converter also interchanges with OE parts 8E0 131 089 DX and 4B0 254 200 X, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – California Universal Catalytic Converter – 2.00" (Part No.448304)
from
$718.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 448304 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design (cutting and welding is required). With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit HM Grade Catalytic Converter (Part No.22962)
from
$682.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 22962. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun” Body 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 spun” Body 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. Designed to fit the 1998-2000 Volkswagen Passat, 1996-1999 Audi A4 Quattro, and more, this direct-fit catalytic converter also interchanges with OE parts 8D0 253 057 KX and 8D0 253 057 BX, among others. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
Walker – Ultra EPA Direct-Fit Catalytic Converter (Part No.16087)
from
$678.99
Product Features:
See More
- 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.
Walker – CalCat CARB Universal Catalytic Converter – 2" Inlet (ID) 2"Outlet (ID) (Part No.82526)
from
$502.99
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.
Product Features:
See More
Product Features:
- CARB COMPLIANT – For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state’s aftermarket converter regulations.
- SUPERIOR TECHNOLOGY – Optimal high technology wash coat formulated to deliver superior performance (as compared to EPA-compliant converters)
- CONSISTENT PERFORMANCE – Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
- 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
- BUY WITH CONFIDENCE – Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity limited warranty
MagnaFlow – California Universal Catalytic Converter – 2.00" (Part No.418004)
from
$438.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 418004 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
Walker – Ultra EPA Universal Catalytic Converter – 2.5" Inlet (ID) 2.5" Outlet (ID) (Part No.93263)
from
$221.99
Product Features:
See More
- 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.
MagnaFlow – OEM Grade Universal Catalytic Converter – 2.25" (Part No.51235)
from
$197.99
MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51235 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design, cutting and welding is required. With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter. 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
Product Features:
- Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- Compact, lightweight construction enables installation in confined areas, welding is required
- Durable 308 stainless steel MIG welds
Top-Rated Catalytic Converter Brands For Your 1998 Audi A4
When it comes to finding the perfect Catalytic Converter for your 1998 Audi A4, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 2 trusted brands. We carry the most popular Catalytic Converter brands including Magnaflow, and more, all known for their exceptional customer ratings (average brand rating of 4.1 stars) and competitive prices, as low as $188.99. Purchasing a Catalytic Converter from us here at Advance Auto Parts is a smart move for both you and your 1998 Audi A4, providing peace of mind with parts that meet or exceed OEM standards.
Popular Magnaflow 1998 Audi A4 Catalytic Converters
If you’re looking for a top-quality Catalytic Converter for your 1998 Audi A4, Advance Auto Parts has exactly what you need with our selection of Magnaflow Catalytic Converters. We have 1 Magnaflow Catalytic Converters in stock for this fitment, all known for their durability and precision fit. With prices starting at just $188.99, you’ll find the perfect Catalytic Converter for your needs and budget. Magnaflow Catalytic Converters for the 1998 Audi A4 come highly rated, with over 2 customer reviews and an impressive average rating of 4.1 stars. Choosing a Magnaflow Catalytic Converter from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$188.99
(2)
HM Grade Universal Catalytic Converter – 2.25"
“Very good product, just as advertised!”
FAQs for 1998 Audi A4 Catalytic Converters
What are the best-selling Catalytic Converters for 1998 Audi A4s?
Out of 14 Catalytic Converters that fit 1998 Audi A4s, the following parts are the top sellers:
- Ultra EPA Universal Catalytic Converter – 2" Inlet (ID) 2" Outlet (ID) (18390442) – $197.99
- California Universal Catalytic Converter – 2.25" (11569876) – $438.99
- OEM Grade Universal Catalytic Converter – 2.00" (10605381) – $194.99
What’s the price range for 1998 Audi A4 Catalytic Converters?
The prices of Catalytic Converters for the 1998 Audi A4 range from $179.99 up to $1,121.99 for the most premium parts.
What is the average price of a Catalytic Converter for a 1998 Audi A4?
The average price for Catalytic Converters for the 1998 Audi A4 is $450.76. Keep in mind the variety of part types within our Catalytic Converter category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Catalytic Converters for other Audi A4 model years?
What are the cheapest Catalytic Converters for my 1998 Audi A4?
The cheapest 1998 Audi A4 Catalytic Converters we carry are:
- HM Grade Universal Catalytic Converter – 2.00" (22315828) – $179.99
- HM Grade Universal Catalytic Converter – 2.25" (22315803) – $188.99
- OEM Grade Universal Catalytic Converter – 2.00" (10605381) – $194.99
- Ultra EPA Universal Catalytic Converter – 2" Inlet (ID) 2" Outlet (ID) (18390442) – $197.99
- OEM Grade Universal Catalytic Converter – 2.25" (10605700) – $197.99
Does Advance Auto Parts sell Catalytic Converters for any other 1998 Audi models?
Yes. We stock Catalytic Converters for 4 other popular 1998 Audi models. Some of the most popular are 1998 A4 Quattro Catalytic Converters, 1998 A6 Quattro Catalytic Converters, 1998 A6 Catalytic Converters, 1998 A8 Quattro Catalytic Converters, and 1998 A8 Catalytic Converters.
What are the top-rated Catalytic Converters that fit the 1998 Audi A4?
The one 1998 Audi A4 Catalytic Converter we have in stock is the HM Grade Universal Catalytic Converter – 2.00". It is rated 3.5 stars and costs $179.99.
What types of Catalytic Converters do you sell for my 1998 Audi A4?
We currently have just 1 Catalytic Converter in stock for a 1998 Audi A4, and as of 11/2/25, it is a Catalytic Converter.
Can I get help with 1998 Audi A4 Catalytic Converter orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Audi Catalytic Converters and more.
What is your return policy for Audi A4 Catalytic Converters?
Advance Auto Parts keeps returns simple. For new Audi A4 Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.