2004 BMW 545i Catalytic Converters

Enhance and Protect Your 2004 BMW 545i with Quality Catalytic Converters

Maintaining the performance of your 2004 BMW 545i starts with choosing the right parts, and a high-quality Catalytic Converter helps ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Catalytic Converters specifically for the 2004 BMW 545i, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Catalytic Converters for Every Budget

Finding a Catalytic Converter that combines quality with affordability is easy at Advance Auto Parts. With prices starting as low as $1,016.99 and an average price of $1,129.49, you can choose one that fits your budget while delivering the quality you expect. Our Catalytic Converters are competitively priced, ranging from $1,016.99 to $1,346.99, so you get value without compromising on strength or reliability.

Trusted Brands and Top-Rated Options

With 4 Catalytic Converters from 1 trusted brands in stock, Advance Auto Parts has you covered. Popular options include California Grade CARB Compliant Manifold Catalytic Converter, HM Grade Federal / EPA Compliant Manifold Catalytic Converter, and HM Grade Federal / EPA Compliant Manifold Catalytic Converter, starting at $1,016.99. Our selection includes highly regarded brands such as Magnaflow, and more, offering you top-notch reliability. For example, we have 4 Magnaflow Catalytic Converters starting at $1,016.99 with an average rating of 4 stars.

Explore Related Parts for a Complete Solution

To further enhance your 2004 BMW 545i, don’t miss our related parts categories, including Catalytic Converter Clamps. These additions will round out your repair or upgrade project and ensure your vehicle is ready for any adventure.

Catalytic Converters for Your 2004 BMW 545i

MagnaFlow – California Grade CARB Compliant Manifold Catalytic Converter (Part No.452789)

California Grade CARB Compliant Manifold Catalytic Converter

from

$1346.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 452789. 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 2004-2005 BMW 645Ci, 2004-2005 BMW 545i, and more, this direct-fit catalytic converter also interchanges with OE parts 18 40 7 522 555 and 18 40 7 522 571. 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.
See More

MagnaFlow – HM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.50400)

HM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$1085.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 50400. 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 2004-2005 BMW 645Ci, 2004-2005 BMW 545i, and more, this direct-fit catalytic converter also interchanges with OE parts 18 40 7 522 555 and 18 40 7 522 571. 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 – OEM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.49790)

OEM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$1067.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49790. 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 2004-2005 BMW 645Ci, 2004-2005 BMW 545i, and more, this direct-fit catalytic converter also interchanges with OE parts 18 40 7 522 554 and 18 40 7 522 570. 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.
See More

MagnaFlow – HM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.50401)

HM Grade Federal / EPA Compliant Manifold Catalytic Converter

from

$1016.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 50401. 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 2004-2005 BMW 645Ci, 2004-2005 BMW 545i, and more, this direct-fit catalytic converter also interchanges with OE parts 18 40 7 522 554 and 18 40 7 522 570. 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

FAQs for 2004 BMW 545i Catalytic Converters

Which Catalytic Converters are the top sellers for the 2004 BMW 545i?

Out of 4 Catalytic Converters that fit 2004 BMW 545is, the following parts are the top sellers:
California Grade CARB Compliant Manifold Catalytic Converter
from $1346.99
This product is not rated
California Grade CARB Compliant Manifold Catalytic Converter
Catalytic Converters
HM Grade Federal / EPA Compliant Manifold Catalytic Converter
from $1016.99
This product is not rated
HM Grade Federal / EPA Compliant Manifold Catalytic Converter
Catalytic Converters
HM Grade Federal / EPA Compliant Manifold Catalytic Converter
from $1085.99
This product is not rated
HM Grade Federal / EPA Compliant Manifold Catalytic Converter
Catalytic Converters

How can I make sure that a part will be compatible with my 2004 BMW 545i?

Our BMW 545i aftermarket and OEM parts are designed specifically for the 2004 model. You can always find your specific fitment and compatibility for your 2004 BMW on an individual product page.

What is the price range for 2004 BMW 545i Catalytic Converters?

The range of prices of Catalytic Converters for the 2004 BMW 545i goes from $1,016.99 up to $1,346.99 for the most premium parts.

What is the average price of a 2004 BMW 545i Catalytic Converter?

2004 BMW 545i Catalytic Converters average $1,129.49 for our selection of OEM and aftermarket parts. Keep in mind the variety of brands we offer, such as Magnaflow, and more, so you are likely to find a wide range of prices across a variety of brands and products.

Does Advance Auto Parts sell Catalytic Converters for other BMW 545i model years?

Yes, we currently stock Catalytic Converters for 1 model years of BMW 545is, from 2005 to 2005. Model years 2005 are the most popular for Catalytic Converter purchases.

Can I get help with 2004 BMW 545i Catalytic Converter orders?

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

What is your return policy for BMW 545i Catalytic Converters?

Advance Auto Parts keeps returns simple. For new BMW 545i Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.