1981 GMC P2500 Fuel and Emissions Systems

Name: High Output Mechanical Fuel Pump - 110 GPH Free Flow
Brand: Holley
SKU: 12-327-11
Price: 161.99 USD
Rating: 4.0 (12 reviews)

Below you will find various in-demand GMC Fuel and Emissions Systems, components and accessories for your 1981 P2500. Advance Auto Parts has popular P2500 parts like Fuel Tanks, Fuel Pumps, Gas Caps and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other P2500 model years including 1980, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989 and more. Select a category of 1981 GMC P2500 Fuel and Emissions Systems below and start saving instantly.

Popular 1981 GMC P2500 Fuel and Emissions Systems Categories

Fuel Tank Cleaning Kits

Fuel Tank Selector Valves

Fuel Pump Tank Seals

Exhaust Check Valves

Oxygen Sensor Connectors

EGR Valve Gaskets

Fuel Injection System

Fuel Cap Tester Adapters

Fuel Tank Selector Valve Connectors

Essential Fuel and Emissions Systems for 1981 GMC P2500s

from

$161.99

Mechanical fuel pump made from heavy duty construction for continuous high RPM operation. Fuel body casting can be rotated to accommodate various plumbing situations. Fuel pressure regulator is not required.

Product Features:

High Output Fuel Flow
Flows 110 gph Free Flow
Shutoff Pressure Pre-Set From 6.5 To 8 PSI
Fuel Pressure Regulator Is Not Required
Heavy Duty Construction For Continuous High rpm Operation
Fuel Body Casting Can Be Rotated For Plumbing Situations
Inlet And Outlet Tapped For 3/8 in. NPT
Inlet/Outlet Tapped For 3/8 in. NPT

from

$24.99

Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Product Features:

Protects your fuel from theft and vandalism
Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$13.99

Make sure that mechanical fuel pumps stay properly aligned by using ARP durable black oxide finished chrome moly or rust proof stainless bolts(both materials are rated at 170,000 PSI and considerably stronger than Grade 8 hardware). Your choice of either conventional hex heads or 12 point head. Washers are included.

Product Features:

Nominally Rated At 170,000 PSI Tensile Strength
Properly Aligned
Conventional Hex Heads
Rust-Proof Stainless Bolts
170,000 PSI

from

$172.99

This replacement fuel tank is precision-engineered to match the fit and function of the original fuel tank on specified vehicles.

Product Features:

Reliable replacement – this fuel tank directly replaces the original fuel tank on specified vehicle years, makes and models
Durable construction – this fuel tank is made from the same rugged materials as the original part for dependable service
Quality assured – this part has been validated to ensure a quality fit and long service life
Trustworthy design – backed by team of product specialists in the United States

from

$152.99

GM Genuine Parts Fuel Tank Selector Valves are designed, engineered, and tested to rigorous standards, and are backed by General Motors. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Product Features:

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

from

$7.99

The EGR system is an emission control device designed to recirculate exhaust gas into the engines air intake system and back to the combustion chamber to control nitrogen oxides or NOx. The chemical NOx is created when oxygen and nitrogen are heated above 2,800-degree F. Exhaust gas, or gas that is displaced from the combustion chamber, contains little to no oxygen molecules. By recirculating this gas back into the combustion chamber fewer oxygen molecules are available for the combustion event which will therefore create a cooler combustion event. The EGR valve can be actuated by engine vacuum or electronically by the engine control module.

Product Features:

Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
Our EGR valves are designed to match the vehicle specific exhaust gas flow rate as designed by the engine manufacturer to provide clean tail pipe emissions.
Feedback EGR valves and pressure sensors contain a robust circuit board design which increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
Where applicable stainless-steel sleeves used over cold rolled sleeves providing smooth EGR pintle operation under all operating conditions.

from

$173.99

CARDONE Remanufactured Smog Pumps are engineered for quick installation and no comebacks. These pumps come with all necessary components for easy installation, while other brands leave out integral components, such as inlets and outlets that commonly break during installation. CARDONE engineers pay special attention to proper vane size and shape on each application to maintain proper flow, while other brands consolidate vane sizes for their own convenience.

Product Features:

100 percent testing of all units guarantees reliable performance every time.
High temperature grease extends bearing life, resulting in longer pump life.
New carbon shoes/vanes on every unit ensure accurate air output to meet today’s stringent emissions standards.
Guaranteed fit and function.
Meets or exceeds O.E.M performance.

from

$43.99

Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.

from

$62.99

Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel tank straps meet or exceed the performance of the original equipment they replace.

Product Features:

Unit is designed to OE fit, form and function requirements accomplished by leveraging our expertise
Direct fit ensures safe, secure fuel tank installation
Product individually packaged and labeled to help reduce product damage prior to installation
Industry leading coverage on straps for plastic tanks

from

$55.99

Unit is designed to OE fit, form and function requirements accomplished by leveraging our expertise
Direct fit ensures safe, secure fuel tank installation
Product individually packaged and labeled to help reduce product damage prior to installation
Industry leading coverage on straps for plastic tanks

from

$27.99

This vacuum reservoir is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:

Direct replacement – this vacuum reservoir is designed to match the fit and function of the original part on specified vehicles
Ideal solution – this reservoir is a reliable replacement for an original part that is missing or damaged
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$28.99

Stock fuel pump pushrods leave a lot to be desired. In fact, they have been known to break at the most inopportune time. To provide you with required reliability and improved performance, ARP has developed these sophisticated and durable pushrods. they are made from premium grade aerospace chrome moly and center less ground to precise diameter. A hollow core serves to reduce the reciprocating mass, which requires less energy to operate. The less drag on the motor, the more power available to you

Product Features:

Made From Premium Grade Aerospace Chrome Moly
Center Less Ground To Precise Diameter
Hollow Core Serves To Reduce The Reciprocating Mass, Which Requires Less Energy To Operate
Provide With Required Reliability And Improved Performance

from

$15.49

Our Fuel Pump Push Rod is constructed from high-quality materials for a long service life. Replacement helps restore the fuel pump to proper operation so that your vehicle runs smoothly.

Product Features:

Direct replacement – this fuel pump push rod is designed to match the fit and function of the original rod on specified vehicles
Ideal solution – this rod is a reliable replacement for an original part that has failed
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$12.49

When replacing a fuel pump or module, it’s extremely important to clean the tank. Existing dirt, debris, and contamination stuck in the fuel tank can clog the brand-new strainer. Delphi’s Fuel Tank Cleaning Kit (FC01) and Tool (FC02) can help clean your fuel tank in less than five minutes. The FC01 includes a low-suds solution, cloth, and gloves that works together with the FC02 to help clean those hard to reach places without having to remove the fuel tank. Visit our Resource Center for helpful tips and tricks on fuel pumps, technologies, and more: https://www.delphiautoparts.com/usa/en-US/resource-center.

Product Features:

Helps avoid premature fuel pump failure
Lint free towel included
Low suds formulation
Removes harmful contaminants from the fuel tank

from

$34.99

Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:

BAR Certified adapters
Adapter check’s a fuel cap’s ability to hold pressure.
Adapters meet EPA standards for recommended fleet coverage.
Check adapter application chart for specific makes and models

from

$17.79

Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:

BAR Certified adapters
Adapter check’s a fuel cap’s ability to hold pressure.
Adapters meet EPA standards for recommended fleet coverage.
Check adapter application chart for specific makes and models

from

$16.99

Carquest Premium fuel pump tank seals are built by Carter Fuel Systems and Agility Auto Parts, industry leaders in high-quality fuel system components. Carquest Premium offers a complete line of fuel pump tank seals covering a wide variety of North American vehicle applications. Carquest Premium fuel pump tank seals are engineered to meet or exceed all OEM specifications.

Product Features:

Engineered to meet or exceed all OEM specifications.
Precision stamped and are treated with a rust proof finish to ensure durability and strength

from

$2375.99

The Edelbrock Pro-Flo 4 EFI Kit No. 35760 for 1986 & Earlier Small-Block Chevy engines is equipped with the latest technology and features. The EFI system comes complete with a traditional 4150-Style satin finish single plane intake manifold and 29 Lb/Hr injectors capable of 450 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA high-quality harness with clearly labeled connections to ensure a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and measures half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximize performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

from

$2404.99

The Edelbrock Pro-Flo 4 EFI Kit No. 35770 for 1986 & Earlier Small-Block Chevy engines is equipped with the latest technology and features. The EFI system comes complete with a traditional 4150-Style satin finish single plane intake manifold and 35 Lb/Hr injectors capable of 550 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA high-quality harness with clearly labeled connections to ensure a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and measures half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximize performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals.The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

from

$9.99

CARQUEST lock rings are designed to positively seat the fuel pump in proper position inside the tank. These precision stamped rings are made from corrosion-resistant and durable metals for long life.

Product Features:

Precision stamped for perfect fit and pump position
Always replace lock ring as a part of fuel pump service

from

$10.49

This fuel tank sending unit lock ring is designed to help restore the connection between the fuel pump, module and/or sending unit and the fuel tank on specified vehicles. It is engineered to match the performance of the original equipment lock ring when the factory ring has failed or is damaged. Manufactured to precise specifications for specified vehicles, it is made with durable materials for reliable performance and long life.

Product Features:

Direct replacement – this fuel tank sending unit lock ring is designed to help restore the connection between the fuel pump, module and/or sending unit and the fuel tank on specified vehicles
Ideal solution – engineered to match the performance of the original equipment lock ring when the factory ring has failed or is damaged
Durable construction – designed and manufactured to strict specifications for reliable performance
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

from

$10.99

Carquest Premium fuel tank lock rings are built by Carter Fuel Systems and Agility Auto Parts, industry leaders in high-quality fuel system components. Carquest Premium offers a complete line of fuel tank lock rings covering a wide variety of North American vehicle applications. Carquest Premium fuel tank lock rings are engineered to meet or exceed all OEM specifications. Carquest Premium fuel tank lock rings are precision stamped and are treated with a rust proof finish to ensure durability and strength.

Product Features:

Engineered to meet or exceed all OEM specifications.
Precision stamped and are treated with a rust proof finish to ensure durability and strength.

from

$39.99

The Secondary Air Injection system is an emission control device designed to pump fresh air into the engine exhaust system to reduce harmful emissions. The Air Injection Pump Check Valve will allow air flow in one direction only to prevent an engine back-fire condition.

Product Features:

Application matched component to ensure the system can be returned to like new condition.
Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.

from

$31.99

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.

Upgrade your 1981 GMC P2500 with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 1981 GMC P2500, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your P2500 functioning at its best. At Advance Auto Parts, we offer a wide selection of 47 Fuel and Emissions Systems for the 1981 GMC P2500, designed to meet your needs without breaking the bank. From Fuel Tank replacements to Fuel Pumps upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Fuel and Emissions Systems for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Fuel and Emissions Systems for your 1981 GMC P2500 at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $3.29 to $2,862.99, with an average price of $248.24. Our 47 Fuel and Emissions Systems in stock come from 11 trusted brands, so you’re sure to find the right part for your 1981 GMC P2500 without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1981 GMC P2500, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names like Carquest Premium, Dorman, Holley, and more. Carquest Premium Fuel and Emissions Systems start at just $11.99 and boast an impressive 4.4 stars average rating from customers. Dorman and Holley also bring quality to the table, with Fuel and Emissions Systems available starting at $15.49, and at an average 4.2 stars rating. With 844 customer reviews and counting, our 1981 GMC P2500 Fuel and Emissions Systems have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Fuel and Emissions System upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 1981 GMC P2500 is always ready to roll. We’re committed to providing you with everything you need to keep your P2500 in top shape, all in one place. Start shopping confidently below for your 1981 GMC P2500!

Best-Selling Fuel Tanks for 1981 GMC P2500s

Enhance the driving experience in your GMC with 12 quality Fuel Tank components, starting at $9.99.

show more show less

from

$108.99

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

from

$152.99

Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

from

$12.49

Helps avoid premature fuel pump failure
Lint free towel included
Low suds formulation
Removes harmful contaminants from the fuel tank

from

$16.99

Engineered to meet or exceed all OEM specifications.
Precision stamped and are treated with a rust proof finish to ensure durability and strength

from

$10.99

Engineered to meet or exceed all OEM specifications.
Precision stamped and are treated with a rust proof finish to ensure durability and strength.

from

$172.99

This replacement fuel tank is precision-engineered to match the fit and function of the original fuel tank on specified vehicles.

Product Features:

Reliable replacement – this fuel tank directly replaces the original fuel tank on specified vehicle years, makes and models
Durable construction – this fuel tank is made from the same rugged materials as the original part for dependable service
Quality assured – this part has been validated to ensure a quality fit and long service life
Trustworthy design – backed by team of product specialists in the United States

from

$80.99

CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

from

$55.99

Unit is designed to OE fit, form and function requirements accomplished by leveraging our expertise
Direct fit ensures safe, secure fuel tank installation
Product individually packaged and labeled to help reduce product damage prior to installation
Industry leading coverage on straps for plastic tanks

from

$102.99

The electronic universal fuel tank selector is a two-way valve designed to direct fuel from a single tank when commanded, on a dual fuel tank vehicle application. With aid from an electrical switch located inside the vehicle cabin, the vehicle operator can select one of two fuel tanks to provide fuel to the vehicle’s engine. When electrically connected correctly, the selector valve will also provide the fuel level sender signal from each fuel tank onto the instrument cluster fuel gauge.

Product Features:

Product constructed to provide long-life operation
6 Ports
Universal
Includes: Selector Valve, Toggle Switch and Pigtail Connector

from

$62.99

Unit is designed to OE fit, form and function requirements accomplished by leveraging our expertise
Direct fit ensures safe, secure fuel tank installation
Product individually packaged and labeled to help reduce product damage prior to installation
Industry leading coverage on straps for plastic tanks

from

$31.99

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.

from

$9.99

Precision stamped for perfect fit and pump position
Always replace lock ring as a part of fuel pump service

Most Popular 1981 GMC P2500 Fuel Pumps

Customize your GMC with 11 Fuel Pumps products like Fuel Pumps, Fuel Pump Mounts, and Fuel Pump Pushrods, all priced under $181.99.

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from

$15.49

Direct replacement – this fuel pump push rod is designed to match the fit and function of the original rod on specified vehicles
Ideal solution – this rod is a reliable replacement for an original part that has failed
Durable construction – this part is made from quality materials to ensure reliable performance and long service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$26.99

Carquest Premium mechanical fuel pumps are engineered by Carter Fuel Systems or Agility Auto Parts to meet or exceed Original Equipment (OE) specifications for fit, form and function. Every mechanical fuel pump is 100% tested throughout the entire manufacturing process for worry-free performance. Carquest Premium mechanical fuel pumps include the installation gaskets needed for each application. Carquest Premium mechanical fuel pumps are engineered with superior quality components to provide the longest life and reliable performance

Product Features:

Meets or exceeds OE specifications for fit, form and function
Special heat-treated rocker arms and case-hardened pins to ensure lasting performance
All fuel pumps are 100% performance tested
Includes installation gaskets or seals where applicable

from

$161.99

High Output Fuel Flow
Flows 110 gph Free Flow
Shutoff Pressure Pre-Set From 6.5 To 8 PSI
Fuel Pressure Regulator Is Not Required
Heavy Duty Construction For Continuous High rpm Operation
Fuel Body Casting Can Be Rotated For Plumbing Situations
Inlet And Outlet Tapped For 3/8 in. NPT
Inlet/Outlet Tapped For 3/8 in. NPT

from

$177.99

Product Features:

Unique Valve Design
Improves Flow Quantity/Quality
Supports Engines Up To 550 HP
Hi-Vol 0.375 in. NPT Inlet/Outlet
Produces 6 psi
Gasoline Or Mixed Fuels Only

from

$22.99

Meets or exceeds OE specifications for fit, form and function
Special heat-treated rocker arms and case-hardened pins to ensure lasting performance
All fuel pumps are 100% performance tested
Includes installation gaskets or seals where applicable

from

$29.99

Meets or exceeds OE specifications for fit, form and function
Special heat-treated rocker arms and case-hardened pins to ensure lasting performance
All fuel pumps are 100% performance tested
Includes installation gaskets or seals where applicable

from

$13.99

Nominally Rated At 170,000 PSI Tensile Strength
Properly Aligned
Conventional Hex Heads
Rust-Proof Stainless Bolts
170,000 PSI

from

$181.99

High Output Fuel Flow
Flows 130 gph Free Flow
Shutoff Pressure Pre-Set From 7.5 To 9 PSI
Fuel Pressure Regulator Required Recommend P/N 12-704
Heavy Duty Construction For Continuous High rpm Operation
Redesigned High Flow Valves Ensure Adequate Fuel Delivery
Fuel Body Casting Can Be Rotated For Plumbing Situations
Inlet And Outlet Tapped For 3/8 in. NPT

from

$34.99

Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:

BAR Certified adapters
Adapter check’s a fuel cap’s ability to hold pressure.
Adapters meet EPA standards for recommended fleet coverage.
Check adapter application chart for specific makes and models

from

$28.99

Made From Premium Grade Aerospace Chrome Moly
Center Less Ground To Precise Diameter
Hollow Core Serves To Reduce The Reciprocating Mass, Which Requires Less Energy To Operate
Provide With Required Reliability And Improved Performance

from

$17.79

Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:

BAR Certified adapters
Adapter check’s a fuel cap’s ability to hold pressure.
Adapters meet EPA standards for recommended fleet coverage.
Check adapter application chart for specific makes and models

Top Picks for 1981 GMC P2500 Gas Caps

Upgrade GMC P2500s with top-quality Gas Caps parts, including 13 OEM and aftermarket selections for your 1981 model.

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from

$11.99

Passes all state and federal emissions tests
Independently tested for emission control
Independently tested for emission control
Protects your fuel from theft and vandalism
Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials

from

$14.99

Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$15.49

Product Features:

Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$15.99

Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$24.99

Protects your fuel from theft and vandalism
Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$16.99

Product Features:

Passes all state and federal emissions tests
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$23.99

Product Features:

Protects your fuel from theft and vandalism
Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$21.79

Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$22.99

Product Features:

Protects your fuel from theft and vandalism
Protects your fuel from theft and vandalism
Passes all state and federal emissions tests
Manufactured from durable, long-life materials
Reduces air pollution with proper sealing and venting
Independently tested for emission control

from

$7.99

Passes all state and federal emissions tests
Independently tested for emission control
Independently tested for emission control
Protects your fuel from theft and vandalism
Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials

from

$24.29

Come pre-assembled for quick and easy installation.
Several fastener options to work with any fuel cap compartment configuration
Fits vehicles orginally equipped with tether
Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials

from

$11.79

Passes all state and federal emissions tests
Independently tested for emission control
Independently tested for emission control
Protects your fuel from theft and vandalism
Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials

from

$10.99

Passes all state and federal emissions tests
Independently tested for emission control
Independently tested for emission control
Protects your fuel from theft and vandalism
Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials

In-Demand Oxygen Sensors for 1981 GMC P2500s

Select from 1 premium Oxygen Sensors parts for your 1981 GMC P2500.

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from

$43.99

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.

Most Sold 1981 GMC P2500 Fuel Injectors

Explore our best-selling GMC parts for the 1981 P2500 among 6 OEM and aftermarket options starting from $2,375.99.

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Pro-Flo 4 EFI XT-Style Kit No. 35793 For 1986 & Earlier Chevy Small-Block

from

$2862.99

The Edelbrock Pro-Flo 4 XT Sequential Port EFI Kit No. 35793 for 1986 & Earlier Small-Block Chevy engines has the latest in technology and features. The EFI system comes complete with a black finish Pro-Flo XT intake manifold and 29 Lb/Hr injectors capable of 450 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA fully terminated high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get maximum performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals and performance. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

Pro-Flo 4 EFI XT-Style Kit No. 35810 For 1986 & Earlier Chevy Small-Block

from

$2780.99

The Edelbrock Pro-Flo 4 XT EFI Kit No. 35810 for 1986 & Earlier Small-Block Chevy engines has the latest technology and features. The EFI system comes complete with a satin finish Pro-Flo XT intake manifold and 35 Lb/Hr injectors capable of 550 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, a water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximize performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

Pro-Flo 4 EFI XT-Style Kit No. 35790 For 1986 & Earlier Chevy Small-Block

from

$2754.99

The Edelbrock Pro-Flo 4 XT EFI Kit No. 35790 for 1986 & Earlier Small-Block Chevy engines has the latest technology and features. The EFI system comes complete with a Pro-Flo XT intake manifold and 29 Lb/Hr injectors capable of 450 HP with 58 p.s.i. fuel pressure. Also included is a plug and play single connection distributor designed to work specifically with Pro-Flo 4 and a made in the USA fully terminated high-quality harness with clearly labeled connections for a hassle-free installation. The new Pro-Flo 4 EFI systems feature an all-new ECU with a faster processor, water proof design and is half the depth of the previous ECU. It also has an upgraded Bluetooth chip that is faster, more reliable and will not drop connection. We’ve added more features for the advanced tuner giving you control over air-fuel ratios, ignition curve, idle speed, acceleration fuel, coolant fans, Rev limiter while retaining the simplicity Pro-Flo is known for. The key to the system is our exclusive E-Tuner 4 app with dyno developed base calibrations. The E-Tuner 4 app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximize performance. E-Tuner 4 features a simple and easy to use setup wizard to help you get started as well as multiple dash displays so you can monitor your engines vitals. The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

from

$2483.99

The Edelbrock Pro-Flo 4 EFI Kit No. 35690 for 1986-earlier small-block Chevy engines is a fully sequential multi-port injection system designed with a fuel injector positioned in each runner of the intake manifold to deliver the best fuel atomization and most even distribution to each cylinder. This system features the high-performance Super Victor single-plane intake manifold that comes preassembled with high-flow injectors, fuel rails and 4150-flange throttle body. All supporting sensors are included along with wire harnesses and ECU. The Super Victor SBC manifold is designed with a larger cross-sectional area in the plenum and large runners for high-horsepower and/or large cubic-inch applications. This kit uses 42 lb/hr injectors and is rated for 675 horsepower at 58 PSI of fuel pressure.The exclusive Edelbrock E-Tuner 4 app is Free and Available for Android and IOS based smart phone or tablet.

from

$2404.99

from

$2375.99

Top-Rated Fuel and Emissions Systems Brands For Your 1981 GMC P2500

Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 1981 GMC P2500s. Below you’ll find some of our best rated Fuel and Emissions Systems from Carquest Premium, Dorman, and Holley, and more. Fuel and Emissions Systems from these brands that fit a 1981 P2500 start at just $11.99 and are rated as high as 4.4 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.

Popular Carquest Premium 1981 GMC P2500 Fuel and Emissions Systems

When it comes to maintaining or upgrading your 1981 GMC P2500, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. Carquest Premium ticks all of those boxes. We offer a wide selection of Carquest Premium Fuel and Emissions Systems, specifically designed for the 1981 GMC P2500. With over 3 Carquest Premium brand Fuel and Emissions Systems in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $11.99, with an average price of just $14.16. Plus, with over 182 customer reviews and an average rating of 4.4 stars, you can trust that our Carquest Premium Fuel and Emissions Systems will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $11.99

(3)

Keyed Alike Locking Fuel Cap

“Worked fine”

from $14.99

(37)

Fuel Cap: Round, Direct Fit, Provides Tight Seal, 1 Pack

“Works Great”

from $15.49

(142)

Non-Locking Fuel Tank Cap

“Good”

Popular Dorman 1981 GMC P2500 Fuel and Emissions Systems

Dorman auto parts is one of the highest quality Fuel and Emissions System brands in the market. Any 1981 GMC P2500 owner should feel confident when installing genuine Dorman parts in their vehicle. To ensure the best fit and performance for your 1981 P2500, Advance Auto Parts carries a full inventory of 2 Dorman Fuel and Emissions Systems. Plus you will be keeping your GMC in peak condition while saving money because prices on these Dorman Fuel and Emissions Systems range from $15.49 to $27.99, plus, with more than 2 customer reviews and an impressive 4.2 stars average rating, you can be confident the Fram Fuel and Emissions Systems below will deliver on both quality and value.

from $27.99

(1)

Vacuum Storage Canister

“If you don’t want to remove entire dash just to get to the old vacuum reservoir this is a great and easy solution. Plenty of you tube videos out there”

from $15.49

(1)

Fuel Pump Push Rod

“great”

FAQs for 1981 GMC P2500 Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 1981 GMC P2500s?

Out of 47 Fuel and Emissions Systems that fit 1981 GMC P2500s, the following parts are the top sellers:

Fuel Cap: Round, Direct Fit, Provides Tight Seal, 1 Pack (18481528) – $14.99
Non-Locking Tethered Fuel Tank Cap (12102600) – $24.29
Mechanical Fuel Pump 160574: Includes Gasket (11763923) – $22.99

What’s the price range for 1981 GMC P2500 Fuel and Emissions Systems?

Fuel and Emissions System prices for the 1981 GMC P2500 start at $3.29 and go up to $2,862.99 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 1981 GMC P2500?

The average price for Fuel and Emissions Systems for the 1981 GMC P2500 is $248.24. Keep in mind the variety of part types within our Fuel and Emissions System category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel and Emissions Systems for other GMC P2500 model years?

Yes, we currently carry Fuel and Emissions Systems for 9 model years of GMC P2500s between 1979 and 1989. Fuel and Emissions Systems are bought most frequently for the following model years: 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, and 1980.

What are the cheapest Fuel and Emissions Systems for my 1981 GMC P2500?

The cheapest 1981 GMC P2500 Fuel and Emissions Systems we carry in stock are:

Exhaust Gas Recirculation (EGR) Valve Gasket (3207897) – $3.29
Keyed Alike Locking Fuel Cap (10069213) – $7.99
Fuel Tank Lock Ring (15770102) – $9.99
Fuel Tank Lock Ring (11763497) – $10.99
Keyed Alike Locking Fuel Cap (10069215) – $10.99

What are the top-rated Fuel and Emissions Systems that fit the 1981 GMC P2500?

Out of 844 reviews by customers, our 1981 GMC P2500 Fuel and Emissions Systems have an average customer rating of . These are some of the highest-rated Fuel and Emissions System types for the 1981 GMC P2500 and their top-rated products:

Vacuum Pumps
- Vacuum Storage Canister (22148588) – $27.99

What types of Fuel and Emissions Systems do you sell for my 1981 GMC P2500?

As of 11/2/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 1981 GMC P2500:

Can I get help with 1981 GMC P2500 Fuel and Emissions System orders?

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

What is your return policy for GMC P2500 Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new GMC P2500 Fuel and Emissions Systems and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1981 GMC P2500 Fuel and Emissions Systems

Holley – High Output Mechanical Fuel Pump – 110 GPH Free Flow (Part No.12-327-11)

Carquest Premium – Locking Fuel Tank Cap (Part No.10501)

ARP Auto Racing – For Use With Chevy, Hex Style Head Type, Polished, Stainless Steel, With Washers (Part No.430-1602)

Dorman – Steel Fuel Tank (Part No.576-314)

GM Genuine Parts – Fuel Tank Selector Valve (Part No.U7001)

Carquest Premium – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.EVA1004)

Cardone – Remanufactured Smog Air Pump (Part No.32-256)

Carquest Premium – Multi-Use Connector (Part No.PTA3163)

Spectra Premium – Fuel Tank Strap (Part No.ST119)

Spectra Premium – Fuel Tank Strap (Part No.ST118)

Dorman – Help – Vacuum Storage Canister (Part No.47076)

ARP Auto Racing – Chrome Moly (Part No.134-8701)

Dorman – Help – Fuel Pump Push Rod (Part No.03875)

Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Carquest Premium – Fuel Cap Tester Adapter: (Part No.12427)

Carquest Premium – Fuel Cap Tester Adapter: (Part No.12410)

Carquest Premium – Fuel Tank Lock Ring (Part No.LO1582931)

Edelbrock – Pro Flo 4 Fuel Injection Kit Sequential Port Sbc 1986 & Earlier 450 Hp 29 Lbhr Injectors (Part No.35760)

Edelbrock – Pro-Flo 4 EFI System for 1986 & Earlier Small-Block Chevy Engines (Part No.35770)

Carquest Premium – Fuel Tank Lock Ring (Part No.LR3000)

Dorman – Help – Fuel Sending Unit Retainer Kit (Part No.55810)

Carquest Premium – Fuel Tank Lock Ring (Part No.LO1511470)

Carquest Premium – Secondary Air Injection Pump Check Valve (Part No.CVC1001)

Carquest Premium – Multi-Use Connector (Part No.FSA1013)

GM Genuine Parts – Fuel Tank Selector Valve (Part No.U7000)

GM Genuine Parts – Fuel Tank Selector Valve (Part No.U7001)

Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Carquest Premium – Fuel Tank Lock Ring (Part No.LO1582931)

Carquest Premium – Fuel Tank Lock Ring (Part No.LO1511470)

Dorman – Steel Fuel Tank (Part No.576-314)

Carquest Premium – Fuel Tank Selector Valve (Part No.FSC1007)

Spectra Premium – Fuel Tank Strap (Part No.ST118)

Carquest Premium – Fuel Tank Selector Valve: 6 Ports, with Toggle Switch, with Pigtail Connector (Part No.FSC1011)

Spectra Premium – Fuel Tank Strap (Part No.ST119)

Carquest Premium – Multi-Use Connector (Part No.FSA1013)

Carquest Premium – Fuel Tank Lock Ring (Part No.LR3000)

Dorman – Help – Fuel Pump Push Rod (Part No.03875)

Carquest Premium – Mechanical Fuel Pump 160577: Includes Gasket (Part No.160577)

Holley – High Output Mechanical Fuel Pump – 110 GPH Free Flow (Part No.12-327-11)

Edelbrock – Performer RPM Series fuel pump for SBC and W Series Chevy (Part No.1721)

Carquest Premium – Mechanical Fuel Pump 160574: Includes Gasket (Part No.160574)

Carquest Premium – Mechanical Fuel Pump 1496422: Includes Gasket (Part No.1496422)

ARP Auto Racing – For Use With Chevy, Hex Style Head Type, Polished, Stainless Steel, With Washers (Part No.430-1602)

Holley – Mechanical Fuel Pump (Part No.12-327-13)

Carquest Premium – Fuel Cap Tester Adapter: (Part No.12427)

ARP Auto Racing – Chrome Moly (Part No.134-8701)

Carquest Premium – Fuel Cap Tester Adapter: (Part No.12410)

Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17591)

Carquest Premium – Fuel Cap: Round, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10837)

Carquest Premium – Non-Locking Fuel Tank Cap (Part No.10834)

Carquest Premium – Gas Cap: Twist On, Reduces Air Pollution, 1 Pack (Part No.10817)

Carquest Premium – Locking Fuel Tank Cap (Part No.10501)

Carquest Premium – Non-Locking Fuel Tank Cap (Part No.10819)

Carquest Premium – Locking Fuel Tank Cap (Part No.10591)

Carquest Premium – Locking Fuel Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10504)

Carquest Premium – Locking Fuel Tank Cap (Part No.10507)

Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17504)

Motorad – Non-Locking Tethered Fuel Tank Cap (Part No.MGC817T)

Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17507)

Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17505)

Carquest Premium – Multi-Use Connector (Part No.PTA3163)

Edelbrock – Pro-Flo 4 EFI XT-Style Kit No. 35793 For 1986 & Earlier Chevy Small-Block (Part No.35793)

Edelbrock – Pro-Flo 4 EFI XT-Style Kit No. 35810 For 1986 & Earlier Chevy Small-Block (Part No.35810)

Edelbrock – Pro-Flo 4 EFI XT-Style Kit No. 35790 For 1986 & Earlier Chevy Small-Block (Part No.35790)

Edelbrock – Pro-Flo 4 EFI System for 1986 & Earlier Small-Block Chevy Engines (Part No.35690)

Edelbrock – Pro-Flo 4 EFI System for 1986 & Earlier Small-Block Chevy Engines (Part No.35770)

Edelbrock – Pro Flo 4 Fuel Injection Kit Sequential Port Sbc 1986 & Earlier 450 Hp 29 Lbhr Injectors (Part No.35760)