2018 Mazda MX-5 Miata Exhaust Parts

Essential Exhaust Parts for 2018 Mazda MX-5 Miatas

MagnaFlow – OEM Grade Universal Catalytic Converter – 2.25" (Part No.51775)

OEM Grade Universal Catalytic Converter - 2.25"

from

$314.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51775. 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 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:
  • 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
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MagnaFlow – OEM Grade Universal Catalytic Converter – 2.50" (Part No.51206)

OEM Grade Universal Catalytic Converter - 2.50"

from

$194.99
MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51206 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:
  • 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
See More

Walker – CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.84205)

CalCat CARB Universal Catalytic Converter 2.25" Inlet (ID) 2.25" Outlet (ID)

from

$206.99
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.
  • 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 – Direct-Fit California Grade Catalytic Converter (Part No.5571437)

Direct-Fit California Grade Catalytic Converter

from

$1085.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 5571437. 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. This direct-fit catalytic converter is designed specifically for the 2006-2015 Mazda MX-5 Miata and interchanges with OE parts LFYH-20-55XC and LFZD-20-55XB, 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:
  • Torca AccuSeal Exhaust Clamps provide a full 360-degree equally distributed clamping force preventing pipe distortion while creating a complete seal and maintaining serviceability
  • 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
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • 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
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Borla Performance Exhaust – T-304 Ss, 2.25" Dia, Single Exhaust With Dual Exit, Dual Right 2.5"Polished S (Part No.11919)

T-304 Ss, 2.25" Dia, Single Exhaust With Dual Exit, Dual Right 2.5"Polished S

from

$957.99
The exhaust sound provides acoustic feedback of engine rpm to aid the driver in critical decisions such as gear selection or throttle input in rev-match shifting. The S-Type optimized combination of packing filament, straight-through core dimensions, perforation pattern and cylindrical shape delivers the intoxicating BORLA(R)Sound of Power with every squeeze of the throttle.

Product Features:
  • Slim, Equidistant Space Between Wide Diameter Core And Muffler Wall Provides An Aggressive And Throaty High-Performance Sound
  • Highly-Evolved Straight-Through Design Proven To Out-Flow A Straight Pipe
  • Built From High Quality T-304 Stainless Steel
  • Aggressive S-Type Sound Under Acceleration, No Drone At Highway Speeds
See More

Upgrade your 2018 Mazda MX-5 Miata with Top-Quality Exhaust Parts

When it comes to maintaining or upgrading your 2018 Mazda MX-5 Miata, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Mazda or enhancing its overall performance, Exhaust Parts are key to keeping your MX-5 Miata functioning at its best. At Advance Auto Parts, we offer a wide selection of 2 Exhaust Parts for the 2018 Mazda MX-5 Miata, designed to meet your needs without breaking the bank. From Catalytic Converter replacements to Exhaust System Kits 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 2018 Mazda MX-5 Miata at great prices. Our Exhaust Parts inventory for this model ranges from just $314.99 to $957.99, with an average price of $636.49. Our 2 Exhaust Parts in stock come from 2 trusted brands, so you’re sure to find the right part for your 2018 Mazda MX-5 Miata 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 2018 Mazda MX-5 Miata is always ready to roll. We’re committed to providing you with everything you need to keep your MX-5 Miata in top shape, all in one place. Start shopping confidently below for your 2018 Mazda MX-5 Miata!

Best-Selling Catalytic Converters for 2018 Mazda MX-5 Miatas

Enhance the driving experience in your Mazda with 1 quality Catalytic Converter components, starting at $314.99.

MagnaFlow – OEM Grade Universal Catalytic Converter – 2.25" (Part No.51775)

OEM Grade Universal Catalytic Converter - 2.25"

from

$314.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51775. 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 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:
  • 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
See More

Most Popular 2018 Mazda MX-5 Miata Exhaust System Kits

Customize your Mazda with 1 Exhaust System Kits products like Exhaust System Kits, all priced under $957.99.

Borla Performance Exhaust – T-304 Ss, 2.25" Dia, Single Exhaust With Dual Exit, Dual Right 2.5"Polished S (Part No.11919)

T-304 Ss, 2.25" Dia, Single Exhaust With Dual Exit, Dual Right 2.5"Polished S

from

$957.99
The exhaust sound provides acoustic feedback of engine rpm to aid the driver in critical decisions such as gear selection or throttle input in rev-match shifting. The S-Type optimized combination of packing filament, straight-through core dimensions, perforation pattern and cylindrical shape delivers the intoxicating BORLA(R)Sound of Power with every squeeze of the throttle.

Product Features:
  • Slim, Equidistant Space Between Wide Diameter Core And Muffler Wall Provides An Aggressive And Throaty High-Performance Sound
  • Highly-Evolved Straight-Through Design Proven To Out-Flow A Straight Pipe
  • Built From High Quality T-304 Stainless Steel
  • Aggressive S-Type Sound Under Acceleration, No Drone At Highway Speeds
See More

FAQs for 2018 Mazda MX-5 Miata Exhaust Parts

Which Exhaust Parts are best-sellers for 2018 Mazda MX-5 Miatas?

Out of 2 Exhaust Parts that fit 2018 Mazda MX-5 Miatas, the following parts are the top sellers:

What’s the price range for 2018 Mazda MX-5 Miata Exhaust Parts?

Exhaust Part prices for the 2018 Mazda MX-5 Miata start at $314.99 and go up to $957.99 for the most premium parts.

What’s the average price of a Exhaust Part for a 2018 Mazda MX-5 Miata?

The average price for Exhaust Parts for the 2018 Mazda MX-5 Miata is $636.49. 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 Mazda MX-5 Miata model years?

Yes, we currently carry Exhaust Parts for 13 model years of Mazda MX-5 Miatas between 2006 and 2020. Exhaust Parts are bought most frequently for the following model years: 2020, 2019, 2017, 2016, 2015, 2014, 2013, 2012, and 2011.

What are the cheapest Exhaust Parts for my 2018 Mazda MX-5 Miata?

The cheapest 2018 Mazda MX-5 Miata Exhaust Parts we carry in stock are:

What types of Exhaust Parts do you sell for my 2018 Mazda MX-5 Miata?

As of 11/2/25, these are some of the most in-demand types of Exhaust Parts for a 2018 Mazda MX-5 Miata:

Can I get help with 2018 Mazda MX-5 Miata Exhaust Part orders?

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

What is your return policy for Mazda MX-5 Miata Exhaust Parts?

Advance Auto Parts keeps returns simple. For new Mazda MX-5 Miata Exhaust Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.