Kia Optima Catalytic Converters

Your One-Stop Shop For Trusted Kia Optima Catalytic Converters

If you’re in search of Kia Optima Catalytic Converters aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 68 Catalytic Converters from top brands with prices ranging from $4.79 to $2,054.00.

Beyond great prices, we stock trusted brands manufacturing all types of Catalytic Converters for your Kia Optima.

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

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Essential Kia Optima Catalytic Converters

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99205HM (Part No.99205HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99205HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99205HM. 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 Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with Federal/EPA Emission systems.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 21-161 (Part No.21-161)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 21-161

from

$855.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-161. 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 21-161 includes (2) Nuts, (2) Bolts, (1) O2 Port Plug, (2) Flange Gaskets and interchanges with OE parts 28950-2G330, 28950-3E140, 28950-3E180, 28950-3E190, 28960-2G710. 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.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51205 (Part No.51205)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51205

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51205. 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 welds 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 Federal/EPA Emission systems.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5561356 (Part No.5561356)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5561356

from

$1369.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 5561356. 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.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51355 (Part No.51355)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51355

from

$223.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51355. 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 welds 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 Federal/EPA Emission systems.
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Walker – Walker Ultra EPA Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 16483 (Part No.16483)

Walker Ultra EPA Direct Fit Catalytic Converter with Integrated Exhaust Manifold, 16483

from

$1109.00
Designed to comply with EPA emissions requirements while delivering premium performance with assured compliance, Walker Ultra EPA-compliant manifold converters are available for import and domestic OBDII (1996 and newer) vehicles and feature an OE-style high-technology washcoat.
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Walker – "Walker Ultra EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93252" (Part No.93252)

"Walker Ultra EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 93252"

from

$195.99
Designed to meet EPA emissions requirements while delivering premium performance and durability, Walker Ultra universal catalytic converters fit import and domestic OBDII (1996 and newer) vehicles. Each converter features an OE style high technology washcoat with an optimal precious metal load for assured compliance.
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Walker – "Walker Ultra EPA Direct Fit Catalytic Converter 2.25"" Outlet (OD), 16513" (Part No.16513)

"Walker Ultra EPA Direct Fit Catalytic Converter 2.25"" Outlet (OD), 16513"

from

$393.99
Designed to comply with EPA standards while delivering premium performance with assured compliance, Walker Ultra direct-fit catalytic converters are available for import and domestic OBDII (1996 and newer) vehicles. Count on Walker Ultra converters for industry-leading fit and function.
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Walker – Walker Exhaust Pipe Flange Gasket, 31537 (Part No.31537)

Walker Exhaust Pipe Flange Gasket, 31537

from

$5.49
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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Walker – Walker Exhaust Pipe Flange Gasket, 31599 (Part No.31599)

Walker Exhaust Pipe Flange Gasket, 31599

from

$19.79
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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Walker – Walker Exhaust Pipe Flange Gasket, 31534 (Part No.31534)

Walker Exhaust Pipe Flange Gasket, 31534

from

$7.69
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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MAHLE Original – MAHLE Original Exhaust Pipe Flange Gasket, F32156 (Part No.F32156)

MAHLE Original Exhaust Pipe Flange Gasket, F32156

from

$9.99
MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.
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Victor Reinz – Victor Reinz Catalytic Converter Gasket, 71-13605-00 (Part No.71-13605-00)

Victor Reinz Catalytic Converter Gasket, 71-13605-00

from

$6.79
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
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Walker – Walker Exhaust Pipe Flange Gasket, 31337 (Part No.31337)

Walker Exhaust Pipe Flange Gasket, 31337

from

$5.49
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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Victor Reinz – Victor Reinz Catalytic Converter Gasket, 71-15038-00 (Part No.71-15038-00)

Victor Reinz Catalytic Converter Gasket, 71-15038-00

from

$6.79
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
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Walker – Walker Exhaust Pipe Flange Gasket, 31388 (Part No.31388)

Walker Exhaust Pipe Flange Gasket, 31388

from

$5.99
Complete your exhaust repair with Walker gaskets and flanges. Built from quality materials for long lasting durability, they’re available in a range of styles and sizes. Each component is designed to work seamlessly with OE exhaust systems and Walker aftermarket replacement parts.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51104 (Part No.51104)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51104

from

$188.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51104. 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 welds 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 Federal/EPA Emission systems.
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Catalytic Converters Brands You Can Trust For Your Kia Optima

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

Popular MagnaFlow Catalytic Converters

MagnaFlow products for the Kia Optima span several categories. Some of the highest-rated MagnaFlow Catalytic Converters that will fit your Kia Optima are:

Most Purchased Kia Optima 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 Kia Optima. Here are the Walker Catalytic Converters Advanced Auto customers buy the most:
Walker Exhaust Pipe Flange Gasket, 31388
from $5.99
(22)
Walker Exhaust Pipe Flange Gasket, 31388
Catalytic Converter Gaskets

FAQs for Kia Optima Catalytic Converters

What are the most purchased Catalytic Converters for the Kia Optima?

Out of 68 Catalytic Converters for the Kia Optima, the most popular in our inventory are:
Walker Exhaust Pipe Flange Gasket, 31537
from $5.49
(3)
Walker Exhaust Pipe Flange Gasket, 31537
Catalytic Converter Gaskets
MAHLE Original Catalytic Converter Gasket, F32218
from $4.79
This product is not rated
MAHLE Original Catalytic Converter Gasket, F32218
Catalytic Converter Gaskets

What are the top-rated Kia Optima Catalytic Converters?

Top-rated Catalytic Converters for your Kia Optima based on customer reviews/ratings are:
"Walker Ultra EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 93236"
from $246.99
(11)
"Walker Ultra EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 93236"
“Used this on my 98 silverado and I suggest for any one to get mega clamp exhaust it work the best no exhaust leak, no engine light passed emission te”
MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99204HM
from $196.99
(10)
MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99204HM
“erfect fit, car sounds great! Advance was the only store to offer this product with a five year warranty. Others were only offering a 2yr one.”