BMW 325i Catalytic Converters

Your One-Stop Shop For Trusted BMW 325i Catalytic Converters

If you’re in search of BMW 325i Catalytic Converters aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 23 Catalytic Converters from top brands with prices ranging from $8.49 to $1,496.99.

Beyond great prices, we stock trusted brands manufacturing all types of Catalytic Converters for your BMW 325i. Of the 5 OEM and aftermarket parts brands we carry, some of the most popular are Walker, Rein, and Flowmaster Inc..

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 BMW 325i Catalytic Converters below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential BMW 325i Catalytic Converters

MagnaFlow – HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter (Part No.24512)

HM Grade Federal / EPA Compliant Direct-Fit Catalytic Converter

from

$839.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 24512. 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 2007-2013 BMW 328i, 2009-2013 BMW 328i xDrive, and more, this direct-fit catalytic converter also interchanges with OE parts 18 30 7 547 840 and 18 30 7 566 937. 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:
  • 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.
  • Your trusted source for EPA-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.81101)

CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed

from

$542.99
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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MagnaFlow – California Grade CARB Compliant Manifold Catalytic Converter (Part No.452287)

California Grade CARB Compliant Manifold Catalytic Converter

from

$1496.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 452287. 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 BMW 325i, 2001-2005 BMW 325Ci, and more, this direct-fit catalytic converter also interchanges with OE parts 18 40 7 514 502 and 18 40 7 515 104, among others. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. 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 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.
  • Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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MagnaFlow – OEM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.49763)

OEM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$1426.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49763. 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 2007-2013 BMW 328i, 2009-2013 BMW 328i xDrive, and more, this direct-fit catalytic converter also interchanges with OE parts 18 30 7 547 840 and 18 40 7 545 309, among others. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. 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:
  • 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.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
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MagnaFlow – HM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.50291)

HM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$1141.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 50291. 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 2007-2013 BMW 328i, 2009-2013 BMW 328i xDrive, and more, this direct-fit catalytic converter also interchanges with OE parts 18 30 7 547 840 and 18 40 7 545 309, among others. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. 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:
  • 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.
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.
See More

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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Walker – Catalytic Converter- EPA Standard, Direct Replacement, No Fabrication Needed (Part No.15051)

Catalytic Converter- EPA Standard, Direct Replacement, No Fabrication Needed

from

$99.99
Designed to provide the required reduction in tailpipe emissions and meet EPA emissions requirements with assured compliance, Walker® Universal Catalytic Converters are available for pre-OBDII (1995 and older) vehicles.

Product Features:
  • EPA COMPLIANT — For use on pre-OBDII vehicles, 1995 and older. Not legal for sale or use in CA, CO and NY. Legal in ME on all pre-OBD vehicles only. Consult your state’s aftermarket converter regulations for details.
  • NO BREAK IN REQUIRED — Ready to operate with application-specific converter shell design and mat compression, no converter break in required after installation
  • 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
  • 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.
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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.
See More

Rein – Exhaust Clamp (Part No.H8020331885RIN)

Exhaust Clamp

from

$26.19
Exhaust Clamp

Walker – 3 Bolt Exhaust Pipe Flange Gasket: Fiber with Metal, Heat Resistant, Premium Materials (Part No.31390)

3 Bolt Exhaust Pipe Flange Gasket: Fiber with Metal, Heat Resistant, Premium Materials

from

$8.49
Complete your exhaust repair with Walker┬« gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

Product Features:
  • AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizesfora quality vehicle repair
  • HEAT RESISTANT — Designed to resist heat for long-lasting performance
  • PREMIUM MATERIALS — Made from high-quality materials for durability and long life
  • ENGINEERING EXPERTISE — Parts are reviewed and validated and approved by Walker engineers through rigorous research and development
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
  • EASIER TO INSTALL — Featuring slotted bolt holes (where applicable) for easy installation, gasket slips into place
  • BETTER TOGETHER — Use premium Walker-½ accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade
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Catalytic Converters Brands You Can Trust For Your BMW 325i

5 trusted brands of Catalytic Converters line our shelves, ready to help keep your BMW 325i running smooth. Below are some of the most popular brands and their top Catalytic Converters offerings:

Most Purchased BMW 325i Catalytic Converters from Walker

When you buy the most frequently purchased Walker brand Catalytic Converters, you can be confident it will be the right part for your BMW 325i. Here are the Walker Catalytic Converters Advanced Auto customers buy the most:
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
from $542.99
This product is not rated
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
Catalytic Converters
Exhaust Clamp
from $26.19
This product is not rated
Exhaust Clamp
Catalytic Converter Clamps

FAQs for BMW 325i Catalytic Converters

What are the most purchased Catalytic Converters for the BMW 325i?

Out of 23 Catalytic Converters for the BMW 325i, the most popular in our inventory are:
Exhaust Clamp
from $26.19
This product is not rated
Exhaust Clamp
Catalytic Converter Clamps
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
from $542.99
This product is not rated
CalCat Catalytic Converter- CARB Certified, Universal / Fabrication Needed
Catalytic Converters
Catalytic Converter- EPA Ultra, Universal/ Fabrication Needed
from $215.99
This product is not rated
Catalytic Converter- EPA Ultra, Universal/ Fabrication Needed
Catalytic Converters

What are the top-rated BMW 325i Catalytic Converters?

Top-rated Catalytic Converters for your BMW 325i based on customer reviews/ratings are:
Standard Grade Federal / EPA Compliant Universal Catalytic Converter
from $124.99
(1)
Standard Grade Federal / EPA Compliant Universal Catalytic Converter
“on thecat, the manufacture says its covered for 24 months, advances sYS 90 DAYS, fEDERAL GOV SAYS 5 UYEARS, sO WHO’S LYING”