1978 Mazda Cosmo Fuel Pumps

Keep Your 1978 Mazda Cosmo in Top Shape with Quality Fuel Pumps

Whether you’re repairing or upgrading your Fuel Pump, using high-quality parts is key to keeping your 1978 Mazda Cosmo looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Fuel Cap Tester Adapters and Fuel Pumps. 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.

Competitive Prices and Extensive Inventory

The average price for a 1978 Mazda Cosmo Fuel Pump at Advance Auto Parts is around $67.07, with a range that starts at $29.49 and goes up to $101.99. With 6 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer, Electric Fuel Pump: With Bracket, Hose Clamps, Nut/Bolt, Rubber Hoses, Splices, Terminal Hardware, and Fuel Pump Includes Wiring Harness start at just $61.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Fuel Pump, don’t forget to check out other key components like Gas Caps and Smog Parts. At Advance Auto Parts, we’re here to help you keep your 1978 Mazda Cosmo in peak condition, inside and out.

Essential 1978 Mazda Cosmo Fuel Pumps

Mr. Gasket – High Performance Electric Fuel Pump – Universal Carbureted Engines (Part No.42S)

High Performance Electric Fuel Pump - Universal Carbureted Engines

from

$63.99
Gravity fed type pump with simple two-wire design. Works on 12 Volt negative ground systems only. Includes fittings and mounting hardware along with easy to follow DIY instructions. Pumps require approximately one amp average draw at maximum delivery. Flow rate is 28 gallons per hour (GPH) at 2 to 3-1/2 pounds per square inch (PSI). Universal design for most import 4 & 6-cylinder carburetor applications. Please see part #12S for V8 gasoline applications, part #12D for diesel applications or part #12E for Ethanol, Methanol, E85 and Race Fuel applications. Solid-state worry free electronics. Eliminates vapor lock and flooding. Works well as a fuel transfer, booster, or stand-alone pump. Not recommended for diesel, methanol, ethanol, E85 or race fuel applications!!

Product Features:
  • Solid-state Worry Free Electronics
  • Internal Pressure Regulating
  • Universal Design Allows For Easy Installation
  • No DiaphraGMs Or Mechanical Parts To Wear Out
  • Makes An Excellent Fuel Transfer or Booster Pump
  • Hose Barbs Fit 5/16″ Fuel Hose
  • Self-priming, 2 wire design
  • Eliminates vapor lock and flooding
See More

Carquest Premium – Fuel Pump U2542558 (Part No.U2542558)

Fuel Pump U2542558

from

$79.99
Carquest Premium electric fuel pumps are built to meet or exceed Original Equipment (OE) specifications for fit, form and function. Our Carquest Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. Carquest Premium electric 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
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
See More

Carquest Premium – Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer (Part No.U260116)

Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer

from

$61.99
Carquest Premium electric fuel pumps are engineered to meet or exceed Original Equipment (OE) specifications for fit, form and function. Our Carquest Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. Carquest Premium electric 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
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
See More

Delphi – Electric Fuel Pump: With Bracket, Hose Clamps, Nut/Bolt, Rubber Hoses, Splices, Terminal Hardware (Part No.FD0037)

Electric Fuel Pump: With Bracket, Hose Clamps, Nut/Bolt, Rubber Hoses, Splices, Terminal Hardware

from

$64.99
Delphi is a Tier 1 supplier to the majority of global vehicle manufacturers and has been a manufacturer of dependable fuel pumps and fuel delivery parts for over 80 years. With over 30 OE-proprietary innovations and 150 patents in fuel technologies, Delphi is regarded as a market leader in North American fuel management with sales coverage at over 95%. Learn more about our expert-led training programs and tech hotline at 1-877-463-3574. 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:
  • Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards
  • Delphi pumps are designed to operate under extreme temperatures with quick engine starts and to avoid low-fuel hesitation, including alcohol fuels and blends
  • Improved pump performance as a result of Delphi’s innovative design and durability
  • Restores fast pressure performance and system integrity, translating to better pumping through less energy
  • Part is validated, tested and matched to the right vehicle application
  • Lower amperage draws less load on vehicle’s electrical system
  • Always be sure to check and clean fuel tank to avoid unnecessary returns
  • Always replace the fuel strainer when doing a fuel pump repair
See More

Carquest Premium – Fuel Pump Includes Wiring Harness (Part No.E259477)

Fuel Pump Includes Wiring Harness

from

$101.99
Carquest Premium electric 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. Our Carquest Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. Carquest Premium electric 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
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
See More

Carquest Premium – Fuel Cap Tester Adapter (Part No.12403)

Fuel Cap Tester Adapter

from

$29.49
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
See More

Most Popular Fuel Cap Tester Adapter for 1978 Mazda Cosmos

Enhance your 1978 Mazda Cosmo with this popular Fuel Cap Tester Adapter we have in stock, for $29.49.

Carquest Premium – Fuel Cap Tester Adapter (Part No.12403)

Fuel Cap Tester Adapter

from

$29.49
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
See More

Best-Selling 1978 Mazda Cosmo Fuel Pumps

Upgrade your Cosmo with one of our 5 best-selling Fuel Pumps, earning an average 3.5 stars rating across 26 reviews.

Mr. Gasket – High Performance Electric Fuel Pump – Universal Carbureted Engines (Part No.42S)

High Performance Electric Fuel Pump - Universal Carbureted Engines

from

$63.99
Gravity fed type pump with simple two-wire design. Works on 12 Volt negative ground systems only. Includes fittings and mounting hardware along with easy to follow DIY instructions. Pumps require approximately one amp average draw at maximum delivery. Flow rate is 28 gallons per hour (GPH) at 2 to 3-1/2 pounds per square inch (PSI). Universal design for most import 4 & 6-cylinder carburetor applications. Please see part #12S for V8 gasoline applications, part #12D for diesel applications or part #12E for Ethanol, Methanol, E85 and Race Fuel applications. Solid-state worry free electronics. Eliminates vapor lock and flooding. Works well as a fuel transfer, booster, or stand-alone pump. Not recommended for diesel, methanol, ethanol, E85 or race fuel applications!!

Product Features:
  • Solid-state Worry Free Electronics
  • Internal Pressure Regulating
  • Universal Design Allows For Easy Installation
  • No DiaphraGMs Or Mechanical Parts To Wear Out
  • Makes An Excellent Fuel Transfer or Booster Pump
  • Hose Barbs Fit 5/16″ Fuel Hose
  • Self-priming, 2 wire design
  • Eliminates vapor lock and flooding
See More

Carquest Premium – Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer (Part No.U260116)

Fuel Pump Module Assembly: Fuel Pump, Sending Unit and Strainer

from

$61.99
Carquest Premium electric fuel pumps are engineered to meet or exceed Original Equipment (OE) specifications for fit, form and function. Our Carquest Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. Carquest Premium electric 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
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
See More

Delphi – Electric Fuel Pump: With Bracket, Hose Clamps, Nut/Bolt, Rubber Hoses, Splices, Terminal Hardware (Part No.FD0037)

Electric Fuel Pump: With Bracket, Hose Clamps, Nut/Bolt, Rubber Hoses, Splices, Terminal Hardware

from

$64.99
Delphi is a Tier 1 supplier to the majority of global vehicle manufacturers and has been a manufacturer of dependable fuel pumps and fuel delivery parts for over 80 years. With over 30 OE-proprietary innovations and 150 patents in fuel technologies, Delphi is regarded as a market leader in North American fuel management with sales coverage at over 95%. Learn more about our expert-led training programs and tech hotline at 1-877-463-3574. 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:
  • Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards
  • Delphi pumps are designed to operate under extreme temperatures with quick engine starts and to avoid low-fuel hesitation, including alcohol fuels and blends
  • Improved pump performance as a result of Delphi’s innovative design and durability
  • Restores fast pressure performance and system integrity, translating to better pumping through less energy
  • Part is validated, tested and matched to the right vehicle application
  • Lower amperage draws less load on vehicle’s electrical system
  • Always be sure to check and clean fuel tank to avoid unnecessary returns
  • Always replace the fuel strainer when doing a fuel pump repair
See More

Carquest Premium – Fuel Pump Includes Wiring Harness (Part No.E259477)

Fuel Pump Includes Wiring Harness

from

$101.99
Carquest Premium electric 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. Our Carquest Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. Carquest Premium electric 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
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
See More

Carquest Premium – Fuel Pump U2542558 (Part No.U2542558)

Fuel Pump U2542558

from

$79.99
Carquest Premium electric fuel pumps are built to meet or exceed Original Equipment (OE) specifications for fit, form and function. Our Carquest Premium fuel pumps are built to be installed in the Original Equipment module or assembly. We have invested in industry-leading quality upgrades, like upgraded turbine impellers and 100% carbon commutators, to deliver greater reliability. Carquest Premium electric 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
  • 100% carbon commutators provide resistance to aggressive fuels and double the life expectancy of the pump
  • OE upgraded turbine impellers greatly reduce fuel pulsation
  • All fuel pumps are 100% performance tested
See More

FAQs for 1978 Mazda Cosmo Fuel Pumps

What are the best-selling Fuel Pumps for 1978 Mazda Cosmos?

Out of 6 Fuel Pumps that fit 1978 Mazda Cosmos, the following parts are the top sellers:

What’s the price range for 1978 Mazda Cosmo Fuel Pumps?

The prices of Fuel Pumps for the 1978 Mazda Cosmo range from $29.49 up to $101.99 for the most premium parts.

What is the average price of a Fuel Pump for a 1978 Mazda Cosmo?

The average price for Fuel Pumps for the 1978 Mazda Cosmo is $67.07. Keep in mind the variety of part types within our Fuel Pump category, where you are likely to find a wide range of prices across a variety of parts and components.

What are the cheapest Fuel Pumps for my 1978 Mazda Cosmo?

Does Advance Auto Parts sell Fuel Pumps for any other 1978 Mazda models?

Yes. We stock Fuel Pumps for 3 other popular 1978 Mazda models. Some of the most popular are 1978 GLC Fuel Pumps, 1978 RX-3 Fuel Pumps, 1978 RX-4 Fuel Pumps, and 1978 B1800 Fuel Pumps.

What are the top-rated Fuel Pumps that fit the 1978 Mazda Cosmo?

The one 1978 Mazda Cosmo Fuel Pump we have in stock is the Fuel Cap Tester Adapter. It costs $29.49.

What types of Fuel Pumps do you sell for my 1978 Mazda Cosmo?

As of 11/2/25, these are some of the most in-demand types of Fuel Pumps for a 1978 Mazda Cosmo:

Can I get help with 1978 Mazda Cosmo Fuel Pump orders?

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

What is your return policy for Mazda Cosmo Fuel Pumps?

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