2003 BMW M3 Exhaust Parts
Find Your Specific 2003 BMW M3 Exhaust Parts
Below you will find various in-demand BMW Exhaust Parts, components and accessories for your 2003 M3. Advance Auto Parts has popular M3 parts like Exhaust Manifold and Headers, Exhaust Hardwares, Catalytic Converters and more. You’ll also find aftermarket and OEM Exhaust Parts for other M3 model years including
2011,
2012,
2013,
2015,
2016,
2017,
2018,
2021,
2022 and more. Select a category of 2003 BMW M3 Exhaust Parts below and start saving instantly.
Popular 2003 BMW M3 Exhaust Parts Categories
Essential Exhaust Parts for 2003 BMW M3s
Carquest Premium – Exhaust Gas Temperature (EGT) Sensor (Part No.EGA2368)
from
$101.99
The temperature of various systems must be reported to the engine control module (ECM) as well as other operating system controllers in the vehicle. Coolant temperature, cabin temperature, exhaust temperature and ambient temperature are just a few systems reported by a temperature sensor. The temperature sensor is fed 5 volts by the systems computer, within the sensor housing will be a thermistor, or dropping resistor whose resistance value will change as the temperature surrounding it changes. Changing resistance in the circuit will change the volt signal at the processor indicating the current operating value.
Product Features:
See More
Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
- Application matched components ensures system operation in like new condition.
Walker – Ultra EPA Universal Catalytic Converter – 2" Inlet (ID) 2" Outlet (ID) (Part No.93266)
from
$235.99
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 – Universal California Grade CARB Compliant Catalytic Converter (Part No.448304)
from
$718.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 448304. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
Product Features:
See More
Product Features:
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- Durable 308 stainless steel MIG welds
- 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
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
MagnaFlow – Universal California Grade CARB Compliant Catalytic Converter (Part No.418005)
from
$438.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 418005. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
Product Features:
See More
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
- Expertly formulated catalyst blend maximizes efficiency, ensuring optimal emissions control to keep your check engine light off
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
MagnaFlow – Direct-Fit HM Grade Federal / EPA Compliant Catalytic Converter (Part No.24021)
from
$1047.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 24021. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. MagnaFlow 24021 includes (2) Torca Clamps and interchanges with OE parts 18 30 1 744 162. 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:
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- 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
- Precision stamped collector design for optimal exhaust flow, engine efficiency, and fuel economy
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.49800)
from
$2132.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49800. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This Direct-Fit Catalytic Converter is designed to fit the 2008-2013 BMW M3 4.0L. MagnaFlow 49800 includes (2) Torca Clamps and interchanges with OE parts 18 30 7 840 684, 18 30 7 848 117. 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:
- Durable 308 stainless steel MIG welds
- 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
- Precision stamped collector design for optimal exhaust flow, engine efficiency, and fuel economy
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
Walker – CalCat Universal Catalytic Converter (Part No.80801)
from
$142.99
Walker an industry leader for import And domestic applications, 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 Catalytic Converters are legal for sale in the state of California, And any state complying with California regulations.
Product Features:
See More
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
MagnaFlow – Direct-Fit OEM Grade Federal / EPA Compliant Catalytic Converter (Part No.52931)
from
$645.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52931. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. MagnaFlow 52931 includes (2) Split Lock Washers, (2) Bolts, (2) Flat Washers, (2) Nuts and interchanges with OE parts 18 32 7 848 044. 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:
- Durable 308 stainless steel MIG welds
- 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 – Universal California Grade CARB Compliant Catalytic Converter (Part No.338104)
from
$294.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 338104. The Universal design allows the part to fit a wide array of vehicles, and the stainless steel construction of this catalytic converter is highly resistant to corrosion. The single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
Product Features:
See More
Product Features:
- Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
- 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
- Compact, lightweight construction enables installation in confined areas, welding is required
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
MagnaFlow – Direct-Fit California Grade CARB Compliant Catalytic Converter (Part No.4481664)
from
$2939.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4481664. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. MagnaFlow 4481664 includes (2) Torca Clamps and interchanges with OE parts 18 30 1 744 162. 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:
- Durable 308 stainless steel MIG welds
- 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
- Precision stamped collector design for optimal exhaust flow, engine efficiency, and fuel economy
- Simplifies installation with essential gaskets and hardware being included in the box
- Durable 308 stainless steel MIG welds
Rein – Copper Exhaust Nut With Shoulder, M7 (Part No.HWN0101)
from
$2.99
Rein Automotive exhaust nuts are manufactured with premium materials and are direct replacements for the OE.
Product Features:
See More
Product Features:
- Properly secures exhaust components.
- Direct replacement for correct fitment.
- Manufactured to strict engineering standards/specifications.
CRP – Exhaust Nut (Part No.H1001417721CRP)
from
$1.92
Exhaust Nut
Upgrade your 2003 BMW M3 with Top-Quality Exhaust Parts
When it comes to maintaining or upgrading your 2003 BMW M3, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your BMW or enhancing its overall performance, Exhaust Parts are key to keeping your M3 functioning at its best. At Advance Auto Parts, we offer a wide selection of 4 Exhaust Parts for the 2003 BMW M3, designed to meet your needs without breaking the bank.
From
Exhaust Manifold and Header
replacements to
Exhaust Hardware
upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.
Affordable Prices and Wide Selection
Shopping for Exhaust Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Exhaust Parts for your 2003 BMW M3 at great prices.
Our Exhaust Parts inventory for this model
ranges from just $1.92 to $1,157.00, with
an average price of $315.98.
Our 4 Exhaust Parts in stock come from 4 trusted brands, so you’re sure to find the right part for your 2003 BMW M3 without overspending.
Explore Related Parts and More
While you’re here, don’t forget to check out other essential categories that go hand in hand with Exhaust Part upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants
and more to make sure your 2003 BMW M3 is always ready to roll. We’re committed to providing you with everything you need to keep your M3 in top shape, all in one place.
Start shopping confidently below for your 2003 BMW M3!
Best-Selling Exhaust Manifold and Headers for 2003 BMW M3s
Enhance the driving experience in your BMW with 1 quality Exhaust Manifold and Header components, starting at $2.99.
Rein – Copper Exhaust Nut With Shoulder, M7 (Part No.HWN0101)
from
$2.99
Rein Automotive exhaust nuts are manufactured with premium materials and are direct replacements for the OE.
Product Features:
See More
Product Features:
- Properly secures exhaust components.
- Direct replacement for correct fitment.
- Manufactured to strict engineering standards/specifications.
Most Popular 2003 BMW M3 Exhaust Hardwares
Customize your BMW with 1 Exhaust Hardware products
like Exhaust Nuts, all
priced under $1.92.
CRP – Exhaust Nut (Part No.H1001417721CRP)
from
$1.92
Exhaust Nut
Top Picks for 2003 BMW M3 Catalytic Converters
Upgrade BMW M3s with top-quality Catalytic Converters parts, including 1 OEM and aftermarket selections for your 2003 model.
MagnaFlow – Direct-Fit HM Grade Federal / EPA Compliant Manifold Catalytic Converter (Part No.50415)
from
$1157.00
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Manifold Catalytic Converter 50415. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. MagnaFlow 50415 includes (3) Flange Gaskets and interchanges with OE parts 11 62 7 832 063, 11 62 7 834 673. 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:
- Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
- High strength 16 gauge 409 stainless steel tubing for exceptional corrosion resistance and maximum service life
- 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
In-Demand Exhaust Temperature (EGT) Products for 2003 BMW M3s
Select from 1 premium Exhaust Temperature (EGT) Products parts for your 2003 BMW M3.
Carquest Premium – Exhaust Gas Temperature (EGT) Sensor (Part No.EGA2368)
from
$101.99
The temperature of various systems must be reported to the engine control module (ECM) as well as other operating system controllers in the vehicle. Coolant temperature, cabin temperature, exhaust temperature and ambient temperature are just a few systems reported by a temperature sensor. The temperature sensor is fed 5 volts by the systems computer, within the sensor housing will be a thermistor, or dropping resistor whose resistance value will change as the temperature surrounding it changes. Changing resistance in the circuit will change the volt signal at the processor indicating the current operating value.
Product Features:
See More
Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
- Application matched components ensures system operation in like new condition.
FAQs for 2003 BMW M3 Exhaust Parts
Which Exhaust Parts are best-sellers for 2003 BMW M3s?
Out of 4 Exhaust Parts that fit 2003 BMW M3s, the following parts are the top sellers:
- Copper Exhaust Nut With Shoulder, M7 (50221555) – $2.99
- Exhaust Gas Temperature (EGT) Sensor (12479664) – $101.99
- Direct-Fit HM Grade Federal / EPA Compliant Manifold Catalytic Converter (10605336) – $1,157.00
What’s the price range for 2003 BMW M3 Exhaust Parts?
Exhaust Part prices for the 2003 BMW M3 start at $1.92 and go up to $1,157.00 for the most premium parts.
What’s the average price of a Exhaust Part for a 2003 BMW M3?
The average price for Exhaust Parts for the 2003 BMW M3 is $315.98. Keep in mind the variety of part types within our Exhaust Part category so you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Exhaust Parts for other BMW M3 model years?
What are the cheapest Exhaust Parts for my 2003 BMW M3?
The cheapest 2003 BMW M3 Exhaust Parts we carry in stock are:
- Exhaust Nut (11845646) – $1.92
- Copper Exhaust Nut With Shoulder, M7 (50221555) – $2.99
- Exhaust Gas Temperature (EGT) Sensor (12479664) – $101.99
- Direct-Fit HM Grade Federal / EPA Compliant Manifold Catalytic Converter (10605336) – $1,157.00
What types of Exhaust Parts do you sell for my 2003 BMW M3?
As of 3/1/26, these are some of the most in-demand types of Exhaust Parts for a 2003 BMW M3:
Can I get help with 2003 BMW M3 Exhaust Part orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about BMW Exhaust Parts and more.
What is your return policy for BMW M3 Exhaust Parts?
Advance Auto Parts keeps returns simple. For new BMW M3 Exhaust Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
