1981 GMC K2500 Catalytic Converters

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1981 GMC K2500 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 1981 GMC K2500 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 Walker and MagnaFlow. For example, Walker Catalytic Converters start at just $193.99 with an average 4.2 star rating. MagnaFlow offer similar pricing and quality, backed by strong customer feedback. With over 36 reviews and a solid 4.3 star average, you can shop with confidence knowing other GMC K2500 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1981 GMC K2500 Catalytic Converter at Advance Auto Parts is around $414.99, with a range that starts at $131.99 and goes up to $1,159.00. With 7 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 80906", MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94016, and MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 3391432 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 1981 GMC K2500 in peak condition, inside and out.

Essential 1981 GMC K2500 Catalytic Converters

MagnaFlow – MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99004HM (Part No.99004HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99004HM

from

$242.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99004HM. 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 Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23256 (Part No.23256)

MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 23256

from

$379.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 23256. 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 23256 includes (1) Torca Clamp, (2) Donut Gaskets. 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"" Inlet (ID) 2"" Outlet (ID), 93236" (Part No.93236)

"Walker Ultra EPA Universal Catalytic Converter 2"" Inlet (ID) 2"" Outlet (ID), 93236"

from

$246.99
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.
See More

MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 93506 (Part No.93506)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 93506

from

$177.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 93506. 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, 445006 (Part No.445006)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 445006

from

$603.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 445006. 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 Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 95471 (Part No.95471)

MagnaFlow Hm Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 95471

from

$1193.00
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 95471. 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 95471 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.
See More

MagnaFlow – MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 3391474 (Part No.3391474)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 3391474

from

$975.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 3391474. 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 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 Direct-Fit Catalytic Converter, 3391256 (Part No.3391256)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 3391256

from

$1285.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 3391256. 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 3391256 includes (1) Torca Clamp, (2) Donut Gaskets. 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, 51309 (Part No.51309)

MagnaFlow Oem Grade Federal / Epa Compliant Universal Catalytic Converter, 51309

from

$221.99
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Universal Catalytic Converter 51309. 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

MagnaFlow – MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 445004 (Part No.445004)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 445004

from

$603.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 445004. 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 Direct-Fit Catalytic Converter, 52054 (Part No.52054)

MagnaFlow Oem Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 52054

from

$1238.00
Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 52054. 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 52054 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 California or Federal/EPA Emission systems.
See More

Walker – "Walker Standard EPA Direct Fit Catalytic Converter 3"" Inlet (ID) 3"" Outlet (OD), 15693" (Part No.15693)

"Walker Standard EPA Direct Fit Catalytic Converter 3"" Inlet (ID) 3"" Outlet (OD), 15693"

from

$411.99
Designed to provide the required reduction in tailpipe emissions and meet EPA emissions requirements with assured compliance, Walker Standard direct-fit catalytic converters are available for pre-OBD (1995 and older) vehicles. Count on Walker Standard converters for industry-leading fit and performance.
See More

MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94037 (Part No.94037)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94037

from

$141.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94037. 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, 93516 (Part No.93516)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 93516

from

$179.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 93516. 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, 93432 (Part No.93432)

MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93432

from

$219.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93432. 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 Standard EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID) 3.375"" Outlet (OD), 50300" (Part No.50300)

"Walker Standard EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID) 3.375"" Outlet (OD), 50300"

from

$383.99
Designed to provide the required reduction in tailpipe emissions and meet EPA emissions requirements with assured compliance, Walker Standard direct-fit catalytic converters are available for pre-OBD (1995 and older) vehicles. Count on Walker Standard converters for industry-leading fit and performance.
See More

MagnaFlow – MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94009 (Part No.94009)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 94009

from

$129.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 94009. 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, 99509HM (Part No.99509HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99509HM

from

$431.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99509HM. 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 Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99506HM (Part No.99506HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99506HM

from

$431.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99506HM. 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

Walker – "Walker CalCat CARB Direct Fit Catalytic Converter 2.5"" Inlet (ID) 3.375"" Outlet (OD), 80946" (Part No.80946)

"Walker CalCat CARB Direct Fit Catalytic Converter 2.5"" Inlet (ID) 3.375"" Outlet (OD), 80946"

from

$1139.00
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.
See More

Walker – Walker Ultra EPA Direct Fit Catalytic Converter, 50410 (Part No.50410)

Walker Ultra EPA Direct Fit Catalytic Converter, 50410

from

$704.99
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 California Grade Carb Compliant Direct-Fit Catalytic Converter, 4451457 (Part No.4451457)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 4451457

from

$1284.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4451457. 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 4451457 includes (1) Torca Clamp. 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 Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 95509 (Part No.95509)

MagnaFlow Standard Grade Federal / Epa Compliant Universal Catalytic Converter, 95509

from

$285.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 95509. 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, 334009 (Part No.334009)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 334009

from

$219.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 334009. 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 Ultra EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID), 50409" (Part No.50409)

"Walker Ultra EPA Direct Fit Catalytic Converter 3.25"" Inlet (ID), 50409"

from

$601.99
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, 99209HM (Part No.99209HM)

MagnaFlow Hm Grade Federal / Epa Compliant Universal Catalytic Converter, 99209HM

from

$196.99
Keep the check engine light off with MagnaFlow HM Grade Federal/EPA Compliant Universal Catalytic Converter 99209HM. 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

Walker – "Walker Ultra EPA Universal Catalytic Converter – 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93238" (Part No.93238)

"Walker Ultra EPA Universal Catalytic Converter - 2.5"" Inlet (ID) 2.5"" Outlet (ID), 93238"

from

$244.99
Designed to comply with EPA emissions requirements while delivering premium performance and durability with assured compliance, Walker Ultra Universal Catalytic Converters are available for import and domestic OBDII (1996 and newer) vehicles.
See More

Walker – "Walker Standard EPA Direct Fit Catalytic Converter 3"" Inlet (OD) 3"" Outlet (OD), 16346" (Part No.16346)

"Walker Standard EPA Direct Fit Catalytic Converter 3"" Inlet (OD) 3"" Outlet (OD), 16346"

from

$729.99
Designed to provide the required reduction in tailpipe emissions and meet EPA emissions requirements with assured compliance, Walker Standard direct-fit catalytic converters are available for pre-OBD (1995 and older) vehicles. Count on Walker Standard converters for industry-leading fit and performance.
See More

Most Popular Catalytic Converters for 1981 GMC K2500s

Enhance your 1981 GMC K2500 with one of the 7 Catalytic Converters we have in stock, starting at just $131.99.

Walker – "Walker Standard EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 15042" (Part No.15042)

"Walker Standard EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 15042"

from

$193.99
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 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

Walker – "Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 80906" (Part No.80906)

"Walker CalCat CARB Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 80906"

from

$673.99
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 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 Direct-Fit Catalytic Converter, 3391432 (Part No.3391432)

MagnaFlow California Grade Carb Compliant Direct-Fit Catalytic Converter, 3391432

from

$1159.00
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 3391432. 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 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, 339106 (Part No.339106)

MagnaFlow California Grade Carb Compliant Universal Catalytic Converter, 339106

from

$523.99
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 339106. 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 Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93432 (Part No.93432)

MagnaFlow Standard Grade Federal / Epa Compliant Direct-Fit Catalytic Converter, 93432

from

$219.99
Keep the check engine light off with MagnaFlow Standard Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 93432. 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

Top-Rated Catalytic Converter Brands For Your 1981 GMC K2500

When it comes to finding the perfect Catalytic Converter for your 1981 GMC K2500, 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 Walker and MagnaFlow, and more, all known for their exceptional customer ratings (average brand rating of 4.2 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 1981 GMC K2500, providing peace of mind with parts that meet or exceed OEM standards.

Popular Walker 1981 GMC K2500 Catalytic Converters

If you’re looking for a top-quality Catalytic Converter for your 1981 GMC K2500, Advance Auto Parts has exactly what you need with our selection of Walker Catalytic Converters. We have 1 Walker Catalytic Converters in stock for this fitment, all known for their durability and precision fit. With prices starting at just $193.99, you’ll find the perfect Catalytic Converter for your needs and budget. Walker Catalytic Converters for the 1981 GMC K2500 come highly rated, with over 5 customer reviews and an impressive average rating of 4.2 stars. Choosing a Walker Catalytic Converter from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
"Walker Standard EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 15042"
from $193.99
(5)
"Walker Standard EPA Universal Catalytic Converter 2.5"" Inlet (ID) 2.5"" Outlet (ID), 15042"
“Replaced stock converter and would use again.”

Top-Quality MagnaFlow 1981 GMC K2500 Catalytic Converters

For those in search of a high-quality Catalytic Converter for their 1981 GMC K2500, Advance Auto Parts offers a great selection of MagnaFlow Catalytic Converters. With 1 MagnaFlow Catalytic Converters in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Catalytic Converters start at just $131.99, giving you a range of options to suit your budget. Backed by over 13 customer ratings and an average rating of 4.1 stars, MagnaFlow Catalytic Converters provide both reliability and excellent performance. Choosing a MagnaFlow Catalytic Converter from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

FAQs for 1981 GMC K2500 Catalytic Converters

What are the best-selling Catalytic Converters for 1981 GMC K2500s?

What’s the price range for 1981 GMC K2500 Catalytic Converters?

The prices of Catalytic Converters for the 1981 GMC K2500 range from $131.99 up to $1,159.00 for the most premium parts.

What is the average price of a Catalytic Converter for a 1981 GMC K2500?

The average price for Catalytic Converters for the 1981 GMC K2500 is $414.99. 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 GMC K2500 model years?

Yes, we carry Catalytic Converters for 18 model years of GMC K2500s between 1979 and 1999. The following model years are the most popular for Catalytic Converter purchases: 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, and 1991.

Does Advance Auto Parts sell Catalytic Converters for any other 1981 GMC models?

Yes. We stock Catalytic Converters for 7 other popular 1981 GMC models. Some of the most popular are 1981 Jimmy Catalytic Converters, 1981 C2500 Catalytic Converters, 1981 K1500 Catalytic Converters, 1981 C1500 Catalytic Converters, and 1981 G3500 Catalytic Converters.

What are the top-rated Catalytic Converters that fit the 1981 GMC K2500?

The one 1981 GMC K2500 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 1981 GMC K2500?

We currently have just 1 Catalytic Converter in stock for a 1981 GMC K2500, and as of 8/2/26, it is a Catalytic Converter.

Can I get help with 1981 GMC K2500 Catalytic Converter orders?

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

What is your return policy for GMC K2500 Catalytic Converters?

Advance Auto Parts keeps returns simple. For new GMC K2500 Catalytic Converters and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.