1978 Buick Century Catalytic Converters

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Keep Your 1978 Buick Century 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 Buick Century 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 77 reviews and a solid 4.0 star average, you can shop with confidence knowing other Buick Century owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Buick Century Catalytic Converter at Advance Auto Parts is around $314.04, with a range that starts at $129.99 and goes up to $611.99. With 10 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 Universal Catalytic Converter, 94005, and Walker CalCat Universal Catalytic Converter, 80828 start at just $129.99 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 Buick Century in peak condition, inside and out.

Essential 1978 Buick Century Catalytic Converters

Walker – "Walker Standard EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 15036" (Part No.15036)

"Walker Standard EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 15036"

from

$92.99
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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Walker – "Walker Standard EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 15031" (Part No.15031)

"Walker Standard EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 15031"

from

$141.99
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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Walker – Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 38.500 IN, 54626 (Part No.54626)

Walker Ultra EPA Direct Fit Catalytic Converter Overall Length 38.500 IN, 54626

from

$467.99
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 2.5"" Inlet (ID) 2.5"" Outlet (ID), 82618" (Part No.82618)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 82618"

from

$706.99
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, 53004 (Part No.53004)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 53004

from

$106.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 53004. 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 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 California Grade Carb Compliant Universal Catalytic Converter, 3322014 (Part No.3322014)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322014

from

$757.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 3322014. 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 2.25"" Inlet (ID) 2.25"" Outlet (ID), 82508" (Part No.82508)

"Walker CalCat CARB Universal Catalytic Converter 2.25"" Inlet (ID) 2.25"" Outlet (ID), 82508"

from

$728.99
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 California Grade Carb Compliant Universal Catalytic Converter, 3322016 (Part No.3322016)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322016

from

$757.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 3322016. 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), 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.
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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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 408004 (Part No.408004)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 408004

from

$325.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 408004. 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"" Inlet (ID) 2""Outlet (ID), 81326" (Part No.81326)

"Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2""Outlet (ID), 81326"

from

$427.99
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 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 448304 (Part No.448304)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 448304

from

$782.99
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.
See More

MagnaFlow – MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51206 (Part No.51206)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51206

from

$213.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51206. 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 Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94005 (Part No.94005)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94005

from

$129.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94005. 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 Universal Catalytic Converter, 51305 (Part No.51305)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51305

from

$221.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51305. 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.
See More

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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MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93418 (Part No.93418)

MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93418

from

$181.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93418. 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.
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Walker – Walker EPA Ultra-Boxed Direct Fit Converter, 16536 (Part No.16536)

Walker EPA Ultra-Boxed Direct Fit Converter, 16536

from

$417.99
Walker Ultra Direct-Fit Catalytic Converters, an industry leader for import And domestic applications, are engineered with durable stainless steel bodies. Walker Ultra Catalytic Converters are available for OBDII (1996 And newer) vehicles. Engineered for specific vehicle emissions requirements, And features a higher loading of precious metals, optimal substrate content, And a high technology washcoat to provide unsurpassed performance, And durability. Walker Ultra Catalytic Converters meet EPA emission requirements, And have a 25,000-mile catalytic performance warranty, in addition to a 5-year/50,000-mile structural integrity warranty.
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MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23413 (Part No.23413)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23413

from

$424.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23413. 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 1993-1996 Buick Century 2.2L & 1993-1996 Oldsmobile Cutlass Ciera 2.2L. MagnaFlow 23413 includes (1) Torca Clamp. 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 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 California Grade Carb Compliant Direct-Fit Catalytic Converter, 4481433 (Part No.4481433)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4481433

from

$1512.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4481433. 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 4481433 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 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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MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 91005 (Part No.91005)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 91005

from

$109.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 91005. 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 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 Universal Catalytic Converter, 3322304 (Part No.3322304)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322304

from

$611.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 3322304. 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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Most Popular Catalytic Converters for 1978 Buick Centuries

Enhance your 1978 Buick Century with one of the 10 Catalytic Converters we have in stock, starting at just $129.99.

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 Direct-Fit Catalytic Converter, 93418 (Part No.93418)

MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93418

from

$181.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93418. 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

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.
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MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94005 (Part No.94005)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94005

from

$129.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94005. 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

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322305 (Part No.3322305)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 3322305

from

$611.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 3322305. 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.
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Walker – "Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2""Outlet (ID), 81326" (Part No.81326)

"Walker CalCat CARB Universal Catalytic Converter 2"" Inlet (ID) 2""Outlet (ID), 81326"

from

$427.99
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 Buick Century

When it comes to finding the perfect Catalytic Converter for your 1978 Buick Century, 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 Buick Century, providing peace of mind with parts that meet or exceed OEM standards.

Popular MagnaFlow 1978 Buick Century Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 1978 Buick Century, Advance Auto Parts has exactly what you need with our selection of MagnaFlow Catalytic Converters. We have 2 MagnaFlow Catalytic Converters in stock for this fitment, all known for their durability and precision fit. With prices starting at just $131.99 and an average cost of $156.99, you’ll find the perfect Catalytic Converter for your needs and budget. MagnaFlow Catalytic Converters for the 1978 Buick Century come highly rated, with over 14 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.
MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93418
from $181.99
(1)
MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93418
“The mounting of this product was very easy, however the exhaust pipe mounting point was about .75″ too long. I had to shorten the pipe by removing an”

FAQs for 1978 Buick Century Catalytic Converters

What are the best-selling Catalytic Converters for 1978 Buick Centuries?

Out of 10 Catalytic Converters that fit 1978 Buick Centuries, the following parts are the top sellers:

What’s the price range for 1978 Buick Century Catalytic Converters?

The prices of Catalytic Converters for the 1978 Buick Century range from $129.99 up to $611.99 for the most premium parts.

What is the average price of a Catalytic Converter for a 1978 Buick Century?

The average price for Catalytic Converters for the 1978 Buick Century is $314.04. 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 Buick Century model years?

Yes, we carry Catalytic Converters for 29 model years of Buick Centuries between 1975 and 2005. The following model years are the most popular for Catalytic Converter purchases: 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, and 1997.

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

Yes. We stock Catalytic Converters for 6 other popular 1978 Buick models. Some of the most popular are 1978 Regal Catalytic Converters, 1978 LeSabre Catalytic Converters, 1978 Skylark Catalytic Converters, 1978 Riviera Catalytic Converters, and 1978 Electra Catalytic Converters.

What are the top-rated Catalytic Converters that fit the 1978 Buick Century?

The one 1978 Buick Century Catalytic Converter we have in stock is the MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94005. It costs $129.99.

What types of Catalytic Converters do you sell for my 1978 Buick Century?

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

Can I get help with 1978 Buick Century Catalytic Converter orders?

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

What is your return policy for Buick Century Catalytic Converters?

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