1978 Mercury Grand Marquis Fuel System Parts

Change Vehicle
Show items:
Sort by:
Select Engine
  • Select Engine
  • 5.8L
  • 6.6L
  • 7.5L
  • Throttle Bodies
  • Fuel Pumps
  • Fuel Tanks
  • Fuel Filters
  • Carburetors
  • Fuel Pressure Regulators
  • Fuel Lines & Hoses
  • Fuel Sensors, Relays
  • Fuel System Additives
    • (0 reviews)
      # 635075149
      Mercury Grand Marquis Hardtop 1978, Fuel Tank by Spectra Premium®. Volume: 24 Gallons. This product is designed and manufactured under ISO 9001 / TS 16949 quality system for use with diesel containing up to 5% bio diesel (B5) and...
      Designed for use with gasoline containing up to 20% ethanol (E20) and diesel containing up to 5% bio diesel (B5)Meets or exceeds manufacturer's specifications
      $123.71
    • (0 reviews)
      # 442651289
      Mercury Grand Marquis Hardtop 5.8L without Auxiliary Fuel Tank 1978, Fuel Tank by Replace®. Volume: 24 Gallons. With Lock-Ring Kit. If you’re in need of a fuel tank, don’t pay the high dealer price for a replacement, when you can...
      Same quality as OE for less moneyDesigned with the latest software and manufactured with modern tooling
      $206.66
    • (0 reviews)
      # mpn1887441
      Mercury Grand Marquis 5.8L / 6.6L 1978, In-Line Gasoline Fuel Filter by FRAM®. In-Line Gasoline. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
      High quality at an affordable priceExpertly made from premium materials
      $3.46
    • (0 reviews)
      # 163761544
      Mercury Grand Marquis 1978, Fuel Filter by Hastings®. This filter is designed to protect fuel system components, such as injection pumps and injectors, from damaging contaminants, including water, bacteria, non-combustible materials,...
      Meets or exceeds all filtration requirements of the applicationExtends fuel system component life
      $2.58 - $3.09
    • (0 reviews)
      # 250916285
      Mercury Grand Marquis 1978, Mechanical Fuel Pump by Spectra Premium®. If your vehicle is in need of a new fuel pump, this product by Spectra Premium is your best choice to restore its performance. Designed and manufactured to be...
      Performs according to OE specificationsOE quality at an affordable price
      $10.54 - $26.15
    • (0 reviews)
      # 250916260
      Mercury Grand Marquis 1978, Mechanical Fuel Pump by Delphi®. As a leading OE supplier to the automotive industry, Delphi holds more than 30 OE-proprietary innovations and 150 patents in fuel module and pump design. As a result, Delphi...
      The latest OE technology enhancements are built into every aftermarket unitMade-to-fit OE replacements, including hard-to-find hanger/sender pump assemblies
      $15.03 - $21.50
    • (0 reviews)
      # 52256502
      Mercury Grand Marquis 1978, Mechanical Fuel Pump by Airtex®. You can't go wrong with this part as Airtex is the only North American manufacturer of mechanical fuel pumps. This product is built to OEM specs and 100% tested to ensure...
      Meets or exceeds OEM quality standardsSpecial heat treated rocker arms and case-hardened pins provide long-lasting performance
      $17.29 - $19.43
    • (0 reviews)
      # mpn1538599362
      Mercury Grand Marquis 6.6L With Domestic Carbureted 1978, In-Line Electric Fuel Pump by Carter®. With Bracket, Wire Harness, Fuel Hose and Clamps. Hose Size: 5/16". 12V Universal Solenoid. Electric fuel pumps by Carter are direct-fit OE...
      Meets or exceeds OE standardsDirect OE replacement
      $38.47
    • (0 reviews)
      # 250916235
      Mercury Grand Marquis 1978, Mechanical Fuel Pump by Carter®. This mechanical fuel pump provides OE fit and reliability, is built in a TS16949 quality certified plant, and factory tested to assure it measures up to the most rigid...
      Premium OE fit, form, and functionStamped steel chamber with a larger diameter diaphragm
      $13.04 - $18.12
    • (0 reviews)
      # 67745926
      Mercury Grand Marquis Canada Built 1978, Complete In-Line Fuel Filter by WIX®. The fuel filter is often the forgotten filter. Yet the fuel put into diesel and off-road equipment, more often than not, contains contaminants such as dirt,...
      Provides highly efficient and unmatched fuel cleansing performanceProtects advanced fuel injection systems from contaminants
      $2.77 - $4.29
    • (0 reviews)
      # 695243908
      Mercury Grand Marquis 1978, Carburetor Accelerator Cable by Pioneer Automotive®. By having own manufacturing facilities Pioneer Automotive® can guarantee the best quality in the market with the most competitive cost structure. Their...
      Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions
      $21.80 - $22.72
    • (0 reviews)
      # 635162902
      Mercury Grand Marquis 1978, Professional™ Fuel Tank Cap by ACDelco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...
      Designed to meet all requirements of your vehicles.Right for your vehicle and lifestyle
      $3.54 - $10.75
    • (0 reviews)
      # 635068236
      Mercury Grand Marquis 1978, Fuel Tank Cap by MotoRad®. MotoRad fuel caps are designed and manufactured to prevent fuel loss, primarily through evaporation. A faulty or leaky fuel cap emit up-to 30 gallons of fuel per year in to the...
      Prevents leakingPrevent fuel loss through evaporation
      $2.23 - $6.58
    • (0 reviews)
      # 635136342
      Mercury Grand Marquis 1978, Fuel Tank Cap by Stant®. A defective fuel cap can cause your vehicle to fail an emissions test, and allow up to 22 gallons of gasoline to evaporate in one year, wasting your money and polluting the...
      OE Pressure relief prevents fuel vapors from exiting the fuel system under normal operating conditionsOE Vacuum relief prevents fuel vapors from exiting the fuel system via the fill tube under normal operations
      $2.86 - $9.69
    • (0 reviews)
      # mpn119810733
      Mercury Grand Marquis 1978, Locking Fuel Tank Cap by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
      High quality at an affordable priceExpertly made from premium materials
      $9.70
    • (0 reviews)
      # mpn1933810
      Mercury Grand Marquis 1978, Replacement Fuel Tank Non-Locking Cap by Gates®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      High quality at an affordable priceExpertly made from premium materials
      $3.86
    • (0 reviews)
      # 45232286
      Mercury Grand Marquis With Ford Carburetor 1978, Carburetor Choke Pull-Off by Hygrade®. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in mind....
      High quality at an affordable priceExpertly made from premium materials
      $18.15 - $56.40
    • (0 reviews)
      # 1003436551
      Mercury Grand Marquis With Ford Carburetor 1978, Carburetor Power Valve Kit by Hygrade®. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in...
      High quality at an affordable priceExpertly made from premium materials
      $7.86 - $8.20
    • (0 reviews)
      # mpn4512249834
      Mercury Grand Marquis Hardtop 1978, Fuel Tank Strap by Liland Global®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship....
      Strict quality control from start to finishMade using the finest materials and advanced technologies
      $13.71
    • (0 reviews)
      # mpn798891905
      Mercury Grand Marquis 1978, Professional™ Fuel Pump Cut-Off Switch by ACDelco®. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $71.55
    • (0 reviews)
      # mpn53618789
      Mercury Grand Marquis With Electric Fuel Pump 1978, Intermotor™ Fuel Pump Cutoff Switch by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products,...
      High quality at an affordable priceExpertly made from premium materials
      $41.09
    • (0 reviews)
      # 446875007
      Mercury Grand Marquis 1978, Fuel Pump Mounting Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $1.05 - $1.07
    • (0 reviews)
      # 446930714
      Mercury Grand Marquis 1978, Fuel Pump Gasket by Victor Reinz®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $1.07 - $1.21
    • (0 reviews)
      # 40675074
      Mercury Grand Marquis 1978, Carburetor Choke Tube Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $1.30 - $1.34
    • (0 reviews)
      # 40675077
      Mercury Grand Marquis 1978, Carburetor Mounting Gasket by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $1.90 - $7.37
    • (0 reviews)
      # mpn1190246
      Mercury Grand Marquis 5.8L Windsor Engine 1978, Carburetor Mounting Gasket Set by Fel-Pro®. Location: Carburetor to Spacer. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art...
      High quality at an affordable priceExpertly made from premium materials
      $8.80
    • (0 reviews)
      # 399831238
      Mercury Grand Marquis 1978, Carburetor Mounting Gasket by Victor Reinz®. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $2.00 - $9.69
    • (0 reviews)
      # 45232289
      Mercury Grand Marquis 1978, Carburetor Choke Thermostat by Hygrade®. Make starting in cold weather easier with this product. Designed for your specific vehicle, this part controls the choke blade to allow easier cold weather starting....
      Direct replacementMeets or exceeds OEM quality standards
      $9.70 - $37.90
    • (0 reviews)
      # 96862020
      Mercury Grand Marquis With Ford Carburetor 1978, Carburetor Float by Hygrade®. Restore proper carburetor operation with this part. This carburetor float is designed to precisely fit your vehicle and deliver reliable function for maximum...
      Direct replacementMeets or exceeds OEM quality standards
      $5.98
    • (0 reviews)
      # 45232297
      Mercury Grand Marquis 1978, Carburetor Repair Kit by Hygrade®. Rebuilding a carburetor can be an economical alternative to buying a new part. This kit includes all required hardware for a complete repair. The product is designed for...
      Direct replacementSaves you money and restores your carburetor
      $25.02 - $50.84
    • (0 reviews)
      # mpn1023223
      Mercury Grand Marquis 1978, Fuel Tank Lock Ring by Spectra Premium®. Every time you replace the fuel tank or fuel pump module, don't forget to change the fuel tank lock ring that secures the fuel pump module to the fuel tank. With OE...
      Same quality as OE for less moneyDirect replacement
      $6.01
    • (0 reviews)
      # mpn114074146
      Mercury Grand Marquis Hardtop 1978, Fuel Tank Strap Kit by Spectra Premium®. Designed to replace worn, rusted, or missing straps, this fuel tank strap kit will help to keep your fuel tank in place ensuring its secure installation....
      Designed to keep your fuel tank in placeSame quality as OE for less money
      $15.40
    • (0 reviews)
      # mpn2926171257
      Mercury Grand Marquis 1978, Fuel Tank Lock Ring by Replace®. Steel/Polymer. For Fuel Level Sender. This is an aftermarket part that replaces factory OE #
      Same quality as OE for less moneyDesigned with the latest software and manufactured with modern tooling
      $12.67
    • (0 reviews)
      # 635213792
      Mercury Grand Marquis 1978, Fuel Tank Straps by Replace®. 1 Pair. Fuel tank straps retain the fuel tank to the vehicle. In their location underneath the vehicle, the fuel tank and straps are exposed to water, snow, ice and road salt,...
      Same quality as OE for less moneyDesigned with the latest software and manufactured with modern tooling
      $21.35 - $29.03
    • (0 reviews)
      # mpn77574
      Mercury Grand Marquis 1978, Fuel Tank Sending Unit Lock Ring by Dorman®. Without Hardware. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in...
      Comes with rubber seal or gasketDirect replacement for a proper fit every time
      $8.11
    • (0 reviews)
      # mpn1417646825
      Mercury Grand Marquis Hardtop without Auxiliary Fuel Tank 1978, Fuel Tank Strap Set by Dorman®. Don't take chances when replacing your fuel tank. Replace the old mounting straps with this quality product. Made of solid steel, the kit...
      Expertly crafted from superior materialsProvides exceptional reliability
      $17.57
    • (0 reviews)
      # mpn1271887541
      Mercury Grand Marquis 1978, Fuel Tank Insulator by SoffSeal®. Finish: Black. Material: EPDM. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
      Eliminates rattles, wind noise and prevents water damageProvides a factory fresh look
      $9.61
    • (0 reviews)
      # mpn2528310
      Mercury Grand Marquis 5.8L Ford Small Block Windsor Gasoline 1978, Victor Series Racing Hi-Flow Fuel Pump by Edelbrock®. The Signature Series triangular air cleaner is a new style with a shape reminiscent of the muscle car era. This hot...
      High quality at an affordable priceExpertly made from premium materials
      $133.95
    • (0 reviews)
      # 63114740
      Mercury Grand Marquis 1978, Mechanical Fuel Pump by Holley®. Designed utilizing the latest technology, this product by Holley features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...
      Triple Chrome Plated HousingsTraditional Look Open Element Style
      $86.52 - $142.95
    • (0 reviews)
      # 139896347
      Mercury Grand Marquis 5.8L Small Block Ford 1978, Ultra HP Mechanical Fuel Pump by Holley®. Designed utilizing the latest technology, this product by Titan features premium quality and will perform better than advertised. Perfect for...
      Gold Dichromate finish for corrosion resistance and classic Holley looks500 CFM model 2300 outboard carburetor
      $313.95 - $525.95
    • (0 reviews)
      # mpn1451865
      Mercury Grand Marquis 1978, Electric Fuel Pump by Mr. Gasket®. Domestic. Gasoline is the lifeblood of your car. It needs to get from the tank, to the carburetor or injectors, and into the engine. Mr. Gasket has components to make that...
      Solid-state Worry Free ElectronicsInternal Pressure Regulating
      $41.09
    • (0 reviews)
      # mpn358514447
      Mercury Grand Marquis 7.5L 1978, Ultra HO Series Carburetor by AED Performance®. AED Performance Ultra HO series carburetors have all the great features of HO series carburetors and feature the aluminum Ultra body, Screw in air bleeds,...
      High quality at an affordable priceExpertly made from premium materials
      $719.79
    • (1 review)
      # 470518243
      Mercury Grand Marquis 7.5L 1978, Street Avenger 4BBL Carburetor by Holley®. Street Avenger carburetors are known to bolt on right out of the box and have great features such as a quick change vacuum secondary for easy fine tuning;...
      Vibratory polished for good looksOptimized street calibration that works-out-of-the-box
      $443.95 - $469.95
    • (0 reviews)
      # 1078578943
      Mercury Grand Marquis 7.5L 1978, Throttle Lever Adapter by Edelbrock®. Throttle Lever Adapter is for automatic transmission equipped vehicles with cable operated throttle (except A.O.D.). Both accept cruise control. Use with appropriate...
      The finest quality at a great priceWe carry everything needed to complete the job
      $26.95
    • (0 reviews)
      # 177207317
      Mercury Grand Marquis 7.5L Holley 4150 Model Carburetor 1978, Carburetor Baseplate Assembly by AED Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology...
      High quality at an affordable priceExpertly made from premium materials
      $106.60 - $107.93
    • (0 reviews)
      # 748441904
      Mercury Grand Marquis 7.5L 1978, Polished Stainless Line Kit for Holley Regulator by AED Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...
      High quality at an affordable priceExpertly made from premium materials
      $59.93
    • (0 reviews)
      # mpn358514386
      Mercury Grand Marquis 7.5L Holley Model Carburetor 1978, Carburetor Power Valve Channel Restricter Kit by AED Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
      High quality at an affordable priceExpertly made from premium materials
      $39.93
    • (0 reviews)
      # mpn358514385
      Mercury Grand Marquis 7.5L Holley Model Carburetor 1978, Carburetor Power Valve Saver Kit by AED Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
      High quality at an affordable priceExpertly made from premium materials
      $11.72
    • (0 reviews)
      # 180486189
      Mercury Grand Marquis 7.5L Holley Model Carburetor 1978, High Flow Carburetor Power Valve by AED Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
      High quality at an affordable priceExpertly made from premium materials
      $6.65 - $71.23
    • (0 reviews)
      # 82531291
      Mercury Grand Marquis 7.5L With AED Performance Carburetor / With Barry Grant Carburetor / With Demon Carburetor / With Holley Carburetor / With JET Performance Carburetor / With Proform Carburetor / With Quick Fuel Carburetor 1978, 4150...
      Fully adjustable for various cable lengthsMachined for optional throttle return spring bracket
      $79.00 - $79.49
    • (0 reviews)
      # 82531295
      Mercury Grand Marquis 7.5L With AED Performance Carburetor / With Barry Grant Carburetor / With Demon Carburetor / With Holley Carburetor / With JET Performance Carburetor / With Quick Fuel Carburetor 1978, 4150 Series Throttle Return...
      Fully adjustable for various cable lengthsMachined for optional throttle return spring bracket
      $39.60 - $40.71
    • (0 reviews)
      # 82531299
      Mercury Grand Marquis 7.5L With AED Performance Carburetor / With Barry Grant Carburetor / With Demon Carburetor / With Holley Carburetor / With JET Performance Carburetor / With Quick Fuel Carburetor 1978, 4500 Series Throttle Linkage...
      Fully adjustable for various cable lengthsMachined for optional throttle return spring bracket
      $79.00
    • (0 reviews)
      # 82531303
      Mercury Grand Marquis 7.5L With AED Performance Carburetor / With Barry Grant Carburetor / With Demon Carburetor / With Holley Carburetor / With Quick Fuel Carburetor 1978, 4500 Series Throttle Return Spring Bracket by CVR Performance®....
      Fully adjustable for various cable lengthsMachined for optional throttle return spring bracket
      $39.60 - $40.71
    • (0 reviews)
      # mpn2527469
      Mercury Grand Marquis 7.5L 1978, Transmission Kick Down Stud by Edelbrock®. Designed utilizing the latest technology, this product by Edelbrock features premium quality and will perform better than advertised. Perfect for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.95
    • (0 reviews)
      # mpn4511700473
      Mercury Grand Marquis C6 Transmission 1978, Hi-Tech Kickdown Kit by Lokar®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      High quality at an affordable priceExpertly made from premium materials
      $97.72
    • (0 reviews)
      # mpn358494335
      Mercury Grand Marquis C6 Transmission 1978, Midnight Series Hi-Tech Kickdown Kit by Lokar®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...
      High quality at an affordable priceExpertly made from premium materials
      $111.37
    • (0 reviews)
      # mpn1422735717
      Mercury Grand Marquis 7.5L Ford Big Block 1978, Chrome Fuel Pump Block-Off Plate by Proform®. Without Mounting Bolts. With Non-Asbestos Gasket. Material: Steel. This product is made of high-quality materials to serve you for years to...
      Carefully designed to improve the performance of your vehicleCrafted from first-rate materials
      $5.24
    • (0 reviews)
      # mpn2973827327
      Mercury Grand Marquis 7.5L 1978, Fuel Pump Block Off by Billet Specialties®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      High quality at an affordable priceExpertly made from premium materials
      $17.95
    • (0 reviews)
      # mpn358514262
      Mercury Grand Marquis 7.5L Holley Model Carburetor 1978, -6AN Center Pivot Bowl Carburetor Fittings by AED Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
      High quality at an affordable priceExpertly made from premium materials
      $14.60
    • (0 reviews)
      # mpn358514347
      Mercury Grand Marquis 7.5L Holley 4150 Model Carburetor 1978, 1 to 1 Carburetor Throttle Linkage Kit by AED Performance®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
      High quality at an affordable priceExpertly made from premium materials
      $10.65




    Guides & Articles

    Useful articles fast to read and guides easy to understand written by mechanics and car enthusiasts to turn your shopping experience with CARiD into a pleasure

    • Automotive Tools
      August 24, 2017
      What Special Tools Are Available For Fuel...
      Maintenance and repair work on fuel systems must be done with precision, no matter what part of it you're working on. Tools specifically designed for use on fuel...
      by Timothy Zahl
    • Replacement Fuel System Parts
      October 05, 2016
      What is a Fuel System 'Throttle Body'?
      A throttle body assembly is an integral part of a fuel-injected engine's air intake system. Its function is to regulate the amount of air that flows into the engine -...
      by Michael Grayen
    • Replacement Fuel System Parts
      July 12, 2016
      Does My Vehicle Have a Mechanical or Electric...
      From the earliest days of the automobile, fuel pumps have existed to draw fuel out of the fuel tank and move it into your engine's combustion area. (A note for the...
      by Timothy Zahl
    • Replacement Fuel System Parts
      November 06, 2014
      How To Replace An In-Tank Fuel Sending Unit
      A Fuel tank sending unit is a term for the mechanical assembly inside your fuel tank which measures the level of liquid in the tank, then reports its findings to the...
      by Timothy Zahl
    • Ignition Parts
      August 10, 2014
      Auto Parts: Dealer vs. Aftermarket
      The question of whether to buy parts from an automotive dealer vs. ones from aftermarket manufacturers is as age-old as the automobile itself. Below, we'll take a look...
      by Timothy Zahl
    • Replacement Fuel System Parts
      August 03, 2014
      How To Replace Fuel Injectors
      Fuel injectors spray fuel directly into your engine’s cylinders during the intake stroke when a piston moves down to allow air and fuel to fill the cylinder chamber....
      by Michael Grayen

    Popular Products






    SECURE SHOPPING

    All manufacturer names, symbols, and descriptions, used in our images and text are used solely for identification purposes only.
    It is neither inferred nor implied that any item sold by CARiD.com is a product authorized by or in any way connected with any vehicle manufacturers displayed on this page.