Mercedes-Benz 420SEL Catalytic Converters

Your One-Stop Shop For Trusted Mercedes-Benz 420SEL Catalytic Converters

If you’re in search of Mercedes-Benz 420SEL Catalytic Converters aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 7 Catalytic Converters from top brands with prices ranging from $124.99 to $506.99.

Beyond great prices, we stock trusted brands manufacturing all types of Catalytic Converters for your Mercedes-Benz 420SEL. Of the 2 OEM and aftermarket parts brands we carry, some of the most popular are Walker and Magnaflow.

And don’t forget to read customer reviews across all Catalytic Converters categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Catalytic Converters have to cost top dollar, and we prove it. Browse our top Mercedes-Benz 420SEL Catalytic Converters below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Mercedes-Benz 420SEL Catalytic Converters

MagnaFlow – Standard Grade Federal / EPA Compliant Universal Catalytic Converter (Part No.93507)

Standard Grade Federal / EPA Compliant Universal Catalytic Converter

from

$189.99
MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 93507 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 pre-OBDII Federally registered vehicles.

Product Features:
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off.
  • Compact, lightweight construction enables installation in confined areas, welding is required.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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MagnaFlow – California Grade CARB Compliant Universal Catalytic Converter (Part No.338008)

California Grade CARB Compliant Universal Catalytic Converter

from

$293.99
MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 338008 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:
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off.
  • Compact, lightweight construction enables installation in confined areas, welding is required.
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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MagnaFlow – Standard Grade Federal / EPA Compliant Universal Catalytic Converter (Part No.94007)

Standard Grade Federal / EPA Compliant Universal Catalytic Converter

from

$124.99
MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94007 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 pre-OBDII Federally registered vehicles.

Product Features:
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off.
  • Compact, lightweight construction enables installation in confined areas, welding is required.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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MagnaFlow – California Grade CARB Compliant Universal Catalytic Converter (Part No.337304)

California Grade CARB Compliant Universal Catalytic Converter

from

$290.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 337304. 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:
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off.
  • Compact, lightweight construction enables installation in confined areas, welding is required.
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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Walker – CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed (Part No.81133)

CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed

from

$506.99
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:
  • 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 washcoat 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/or welding for installation
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Walker – CalCat Universal Converter (Part No.80833)

CalCat Universal Converter

from

$151.99
Walker®, an industry leader for many popular European, Asian and North American vehicles, offers Walker® CalCat® Universal Catalytic Converters, available for OBDII (1996 and newer) vehicles and Pre-OBD (1995 and older) vehicles, specifically formulated to comply with California Air Resource Board (CARB) regulations. Walker® CalCat® Universal Catalytic Converters feature OE-style hangers, brackets, routings and heat shields allowing quick and easy installation of direct-fit units. OE expertise delivers application-engineered parts, providing the best fit and performance for even the most challenging emissions issues, while premium substrate material and a high-technology wash coat ensure exceptional oxygen storage capacity. Walker® CalCat® Catalytic Converters are legal for sale in the state of California, and any state complying with California regulations.

Product Features:
  • Legal for sale in the state of California, complies with C.A.R.B. regulations
  • Stainless steel body with aluminized pipe and heat shields for durability
  • Expandable bushings for custom installation requirements
  • Universal converter may require modification to complete installation
  • 5-year/50,000-mile catalytic performance and structural integrity warranty
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MagnaFlow – California Grade CARB Compliant Universal Catalytic Converter (Part No.337305)

California Grade CARB Compliant Universal Catalytic Converter

from

$328.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 337305. 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:
  • Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off.
  • Compact, lightweight construction enables installation in confined areas, welding is required.
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

Catalytic Converters Brands You Can Trust For Your Mercedes-Benz 420SEL

2 trusted brands of Catalytic Converters line our shelves, ready to help keep your Mercedes-Benz 420SEL running smooth. Below are some of the most popular brands and their top Catalytic Converters offerings:

Popular Walker Catalytic Converters

Walker products for the Mercedes-Benz 420SEL span several categories. Some of the highest-rated Walker Catalytic Converters that will fit your Mercedes-Benz 420SEL are:
CalCat Universal Converter
from $151.99
(5)
CalCat Universal Converter
Catalytic Converters

Most Purchased Mercedes-Benz 420SEL Catalytic Converters from MagnaFlow

When you buy the most frequently purchased MagnaFlow brand Catalytic Converters, you can be confident it will be the right part for your Mercedes-Benz 420SEL. Here are the MagnaFlow Catalytic Converters Advanced Auto customers buy the most:
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
from $506.99
This product is not rated
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
Catalytic Converters
CalCat Universal Converter
from $151.99
(5)
CalCat Universal Converter
Catalytic Converters

FAQs for Mercedes-Benz 420SEL Catalytic Converters

What are the most purchased Catalytic Converters for the Mercedes-Benz 420SEL?

Out of 7 Catalytic Converters for the Mercedes-Benz 420SEL, the most popular in our inventory are:
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
from $506.99
This product is not rated
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
Catalytic Converters
Standard Grade Federal / EPA Compliant Universal Catalytic Converter
from $189.99
This product is not rated
Standard Grade Federal / EPA Compliant Universal Catalytic Converter
Catalytic Converters