1978 Chevrolet Impala Catalytic Converters

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Keep Your 1978 Chevrolet Impala in Top Shape with Quality Catalytic Converters

Whether you’re repairing or upgrading your Catalytic Converter, using high-quality parts is key to keeping your 1978 Chevrolet Impala looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Catalytic Converters. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Catalytic Converters from Trusted Brands

Looking for a reliable Catalytic Converter? We’ve got you covered with options from brands you know and trust like MagnaFlow. For example, MagnaFlow Catalytic Converters start at just $131.99 with an average 4.1 star rating. With over 39 reviews and a solid 4.0 star average, you can shop with confidence knowing other Chevrolet Impala owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Chevrolet Impala Catalytic Converter at Advance Auto Parts is around $311.16, with a range that starts at $131.99 and goes up to $611.99. With 6 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94016, MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93431, and Walker CalCat Universal Catalytic Converter, 80828 start at just $137.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Catalytic Converter, don’t forget to check out other key components like Exhaust Manifold and Headers and Exhaust Mufflers. At Advance Auto Parts, we’re here to help you keep your 1978 Chevrolet Impala in peak condition, inside and out.

Essential 1978 Chevrolet Impala Catalytic Converters

Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 55.350 IN, 50584 (Part No.50584)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 55.350 IN, 50584

from

$651.99
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 CalCat CARB Universal Catalytic Converter 2.25"" Inlet (ID) 2.25""Outlet (ID), 81322" (Part No.81322)

"Walker CalCat CARB Universal Catalytic Converter 2.25"" Inlet (ID) 2.25""Outlet (ID), 81322"

from

$489.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94015 (Part No.94015)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94015

from

$137.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94015. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design. 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.
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Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 15.960 IN, 16895 (Part No.16895)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 15.960 IN, 16895

from

$798.99
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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MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4481405 (Part No.4481405)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4481405

from

$1428.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4481405. 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 4481405 includes (1) Flange Gasket, (1) Crush Ring Gasket. 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, 51306 (Part No.51306)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51306

from

$221.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51306. 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 CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 84206" (Part No.84206)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 84206"

from

$308.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49195 (Part No.49195)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49195

from

$541.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49195. 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 49195 includes (1) Flange Gasket, (1) Crush Ring Gasket. 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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Dorman – Dorman Manifold Converter – CARB Compliant – Direct replacement, 673-049 (Part No.673-049)

Dorman Manifold Converter - CARB Compliant - Direct replacement, 673-049

from

$1476.00
This catalytic converter with integrated exhaust manifold – a.k.a. manifold converter – is precision-engineered to match the original equipment on specific vehicle years, makes and models for a reliable replacement.
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Walker – "Walker Standard EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 15037" (Part No.15037)

"Walker Standard EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 15037"

from

$122.99
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. Count on Walker�catalytic�converters�for�industry-leading fit and performance.
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MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5461206 (Part No.5461206)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 5461206

from

$1239.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 5461206. 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 Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23427 (Part No.23427)

MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23427

from

$171.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23427. 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 23427 includes (1) Flange Gasket. 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 CalCat CARB Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 81127" (Part No.81127)

"Walker CalCat CARB Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 81127"

from

$511.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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Walker – Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 39.460 IN, 84599 (Part No.84599)

Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 39.460 IN, 84599

from

$1650.00
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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Walker – "Walker Ultra EPA Direct Fit Catalytic Converter 2.5"" Outlet (OD), 16656" (Part No.16656)

"Walker Ultra EPA Direct Fit Catalytic Converter 2.5"" Outlet (OD), 16656"

from

$565.99
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.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM (Part No.99306HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99306HM

from

$204.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99306HM. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 418005 (Part No.418005)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 418005

from

$477.99
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.
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Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 82617" (Part No.82617)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 82617"

from

$797.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 51532 (Part No.51532)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 51532

from

$433.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 51532. 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 51532 includes (1) Flange Gasket, (1) Crush Ring Gasket. 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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Walker – Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 38.325 IN, 84585 (Part No.84585)

Walker CalCat CARB Direct Fit Catalytic Converter Overall Length 38.325 IN, 84585

from

$1929.00
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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Walker – "Walker CalCat CARB Direct Fit Catalytic Converter 2.15"" Outlet (OD), 84597" (Part No.84597)

"Walker CalCat CARB Direct Fit Catalytic Converter 2.15"" Outlet (OD), 84597"

from

$2194.00
Designed, tested and validated for assured compliance to meet CARB standards, Walker CalCat direct-fit catalytic converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
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MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49225 (Part No.49225)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 49225

from

$499.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 49225. 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 49225 includes (1) Flange Gasket, (1) Crush Ring Gasket. 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.
See More

MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94006 (Part No.94006)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94006

from

$131.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94006. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design. 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.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 52185 (Part No.52185)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 52185

from

$819.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52185. 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 2014-2016 Chevrolet Impala Limited 3.6L & 2012-2013 Chevrolet Impala 3.6L. MagnaFlow 52185 includes (2) Nuts, (2) Bolts, (1) Flange Gasket. 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 California Grade Carb Compliant Universal Catalytic Converter, 408005 (Part No.408005)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 408005

from

$345.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 408005. 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.
See More

Walker – "Walker Standard EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 15041" (Part No.15041)

"Walker Standard EPA Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 15041"

from

$237.99
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. Count on Walker�catalytic�converters�for�industry-leading fit and performance.
See More

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99305HM (Part No.99305HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99305HM

from

$204.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99305HM. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4561195 (Part No.4561195)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4561195

from

$1773.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4561195. 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 2006 Chevrolet Impala 3.5L & 2006 Chevrolet Monte Carlo 3.5L. MagnaFlow 4561195 includes (1) Flange Gasket, (1) Crush Ring Gasket. 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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Most Popular Catalytic Converters for 1978 Chevrolet Impalas

Enhance your 1978 Chevrolet Impala with one of the 6 Catalytic Converters we have in stock, starting at just $131.99.

MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94006 (Part No.94006)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94006

from

$131.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94006. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design. 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.
See More

MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94016 (Part No.94016)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94016

from

$137.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94016. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design. 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322306 (Part No.3322306)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322306

from

$611.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 3322306. 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.
See More

Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5""Outlet (ID), 81328" (Part No.81328)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5""Outlet (ID), 81328"

from

$437.99
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. Walker CalCat catalytic converters are thoroughly tested to ensure they meet CARB performance requirements.
See More

MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93431 (Part No.93431)

MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93431

from

$363.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93431. 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 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.
See More

Walker – Walker CalCat Universal Catalytic Converter, 80828 (Part No.80828)

Walker CalCat Universal Catalytic Converter, 80828

from

$182.99
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.
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Top-Rated Catalytic Converter Brands For Your 1978 Chevrolet Impala

When it comes to finding the perfect Catalytic Converter for your 1978 Chevrolet Impala, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 2 trusted brands. We carry the most popular Catalytic Converter brands including MagnaFlow, and more, all known for their exceptional customer ratings (average brand rating of 4.1 stars) and competitive prices, as low as $131.99. Purchasing a Catalytic Converter from us here at Advance Auto Parts is a smart move for both you and your 1978 Chevrolet Impala, providing peace of mind with parts that meet or exceed OEM standards.

Popular MagnaFlow 1978 Chevrolet Impala Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 1978 Chevrolet Impala, Advance Auto Parts has exactly what you need with our selection of MagnaFlow Catalytic Converters. We have 1 MagnaFlow Catalytic Converters in stock for this fitment, all known for their durability and precision fit. With prices starting at just $131.99, you’ll find the perfect Catalytic Converter for your needs and budget. MagnaFlow Catalytic Converters for the 1978 Chevrolet Impala come highly rated, with over 13 customer reviews and an impressive average rating of 4.1 stars. Choosing a MagnaFlow Catalytic Converter from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

FAQs for 1978 Chevrolet Impala Catalytic Converters

What are the best-selling Catalytic Converters for 1978 Chevrolet Impalas?

Out of 6 Catalytic Converters that fit 1978 Chevrolet Impalas, the following parts are the top sellers:

What’s the price range for 1978 Chevrolet Impala Catalytic Converters?

The prices of Catalytic Converters for the 1978 Chevrolet Impala range from $131.99 up to $611.99 for the most premium parts.

What is the average price of a Catalytic Converter for a 1978 Chevrolet Impala?

The average price for Catalytic Converters for the 1978 Chevrolet Impala is $311.16. Keep in mind the variety of part types within our Catalytic Converter category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Catalytic Converters for other Chevrolet Impala model years?

Yes, we carry Catalytic Converters for 33 model years of Chevrolet Impalas between 1975 and 2020. The following model years are the most popular for Catalytic Converter purchases: 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2013, and 2012.

Does Advance Auto Parts sell Catalytic Converters for any other 1978 Chevrolet models?

Yes. We stock Catalytic Converters for 17 other popular 1978 Chevrolet models. Some of the most popular are 1978 Malibu Catalytic Converters, 1978 Camaro Catalytic Converters, 1978 Monte Carlo Catalytic Converters, 1978 Corvette Catalytic Converters, and 1978 Caprice Catalytic Converters.

What are the top-rated Catalytic Converters that fit the 1978 Chevrolet Impala?

The one 1978 Chevrolet Impala Catalytic Converter we have in stock is the MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94006. It is rated 4 stars and costs $131.99.

What types of Catalytic Converters do you sell for my 1978 Chevrolet Impala?

We currently have just 1 Catalytic Converter in stock for a 1978 Chevrolet Impala, and as of 8/2/26, it is a Catalytic Converter.

Can I get help with 1978 Chevrolet Impala Catalytic Converter orders?

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

What is your return policy for Chevrolet Impala Catalytic Converters?

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