1984 Mercury Grand Marquis Performance Ignition Systems

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    • (0 reviews)
      # mpn1458515
      Mercury Grand Marquis 5.0L 1984, Blaster™ Direct Ignition Coil by MSD®. High Performance. Designed utilizing the latest technology, this product by MSD features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $50.32
    • (1 review)
      # 803895501
      Mercury Grand Marquis 1984, PlasmaCore™ Inconel Electrode Pulse Nickel Spark Plugs by Pulstar®. With Resistor. Inconel-electrode Pulse Plugs. Designed specifically for most popular vehicles, PlasmaCore™ Inconel Electrode Pulse Plug...
      Increased horsepowerBetter torque
      $14.95 - $119.60
    • (0 reviews)
      # mpn1467496
      Mercury Grand Marquis 5.0L 1984, Street Fire™ Direct Bolt-On Ignition Coil by MSD®. Designed utilizing the latest technology, this product by MSD features premium quality and will perform better than advertised. Perfect for your...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $42.82
    • (0 reviews)
      # 839677482
      Mercury Grand Marquis 5.0L 1984, Super Coil Kit by Accel®. Accel Super Coils feature advanced bobbin technology, highly specialized silicone magnetic steel cores, along with optimized winding, resistance and turns ratios to deliver...
      High temp epoxy resists shock and vibrationAdvanced bobbin technology
      $46.95 - $69.95
    • (0 reviews)
      # 906204233
      Mercury Grand Marquis 5.0L 1984 Spark Plug Wire Set by Accel®. These Accel 8.8mm wires feature a carbon/graphite core that virtually eliminate RFI noise while providing maximum conductivity for ultimate performance in any race or street...
      8000, 8800, & 8900 Series, 550°F-rated8.8mm yellow high temperature silicone jacket
      $83.30 - $88.70
    • (0 reviews)
      # mpn1177915433
      Mercury Grand Marquis 1984, Performance Nickel Spark Plug by Nitrode®. Hotter Plug, higher heat range. The Nitrode™ spark plugs are positioned to be the world's "greenest" most environmentally friendly spark plugs on the planet....
      The Nitrode™ is made with a proprietary ceramic exclusively used for this spark plugThis unique ceramic is over 10% harder than any ceramic known today
      $8.09
    • (0 reviews)
      # 819554183
      Mercury Grand Marquis 5.0L 1984 Super Conductor Spark Plug Wire Set by MSD®. Designed utilizing the latest technology, this product by MSD features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $96.40 - $98.54
    • (0 reviews)
      # mpn4494108945
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, HEI Distributor by Speed FX®. With Ignition Control Module, Magnetic Trigger, Vacuum Advance, Chromoly Steel Gear, Polished Billet Aluminum Shaft, With HEI/Male Posts....
      Provides effective power supply to each spark plugDesigned to strict quality standards
      $98.91
    • (0 reviews)
      # 803933244
      Mercury Grand Marquis TBI 1984, U-Groove™ High Performance Copper Spark Plugs by Accel®. With Resistor. Accel HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger...
      The Copper core is a better conductor than Iridium or Platinum plugsCopper dissipates heat much better than other materials
      $3.38 - $26.25
    • (0 reviews)
      # 826518657
      Mercury Grand Marquis 1984, Flame-Thrower™ Automotive Billet Distributor by PerTronix®. Plug n' Play billet distributors are designed for maximum ignition performance at a price you can afford. The distributors are available with...
      Limited 1 year mechanicalDigital performance solutions give you more power and more features in a smaller package
      $272.40 - $307.00
    • (0 reviews)
      # 904812320
      Mercury Grand Marquis 1984, TFI Ignition Coil by TSP®. TSP's Ford TFI (Thick Film Ignition) ignition coils are the top coils on the market today, featuring magnetic steel cores specially designed to deliver up to 15% more spark than...
      Designed for ultra high efficiencyProvides better performance
      $22.87
    • (0 reviews)
      # mpn4494108611
      Mercury Grand Marquis 5.0L 1984, Pro-Billet™ Distributor by MSD®. MSD engineers fit all of their high performance distributor experience into a special compact housing designed to be less obtrusive for Ford engines. The diameter of...
      Billet housing is 5/8” smaller in diameter than stock Ford distributorsMust be used with an MSD Ignition Control
      $301.95
    • (0 reviews)
      # mpn2270607
      Mercury Grand Marquis Base / LS 5.0L 1984 Super Stock™ Spark Plug Wire Kit by Accel®. These Accel Super Stock wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price....
      8 mm SpiralStainless Steel Spark Plug Terminals
      $58.40
    • (0 reviews)
      # mpn4483770236
      Mercury Grand Marquis 5.8L 1984, Power Pack Ignition Kit by TSP®. TSP's Power Pack Ignition Kit delivers high quality ignition components, all in one retail-friendly display box. It includes Pro Series Pro Billet distributor, 50,000...
      Designed for ultra high efficiencyProvides better performance
      $340.98
    • (0 reviews)
      # mpn2270622
      Mercury Grand Marquis 5.0L 1984, U-Groove™ Resistor Header Copper Spark Plugs by Accel®. Designed utilizing the latest technology, this product by Accel features premium quality and will perform better than advertised. Perfect for...
      Shorty Spark Plugs For Tubular Exhaust HeadersEliminates Dimpling Headers For Added Clearance
      $32.43
    • (0 reviews)
      # 803927814
      Mercury Grand Marquis 1984, Copper Spark Plug by Autolite®. With Resistor. These spark plugs by Autolite are specially designed and manufactured to ensure quick starts, dependable performance, and smooth acceleration. The products are...
      Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)Multi-rib insulator reduces danger of "flash-over"
      $1.64
    • (0 reviews)
      # 898254787
      Mercury Grand Marquis 1984, Premium Racing LGS Spark Plug by Brisk®. Brisk Premium LGS spark plug has been developed after two-year cooperation with Lamborghini Morori Marini. Brisk Premium LGS spark plug utilizes extremely long...
      High-Potential Semi-Surface discharge equals more powerDischarge at the point of richest mixture in 360° perimeter
      $13.99
    • (0 reviews)
      # mpn2268034
      Mercury Grand Marquis Base / LS 5.0L 1984 300+™ Spark Plug Race Wire Set by Accel®. These Accel 300+ wire sets are custom tailored for race engines and their builders. The oversize 8.8mm wire is rated for 600 degrees F and 60kV....
      150 Ohms/ft. Of Resistance600 F Rated Silicone Jacket
      $109.95
    • (0 reviews)
      # mpn1588771648
      Mercury Grand Marquis 5.0L 1984 Armor Shield Spark Plug Wire Set by Accel®. With Male Tower Distributor Cap. Accel Armor Shield wires feature a metallic braided wire that delivers maximum spark energy while providing a Pro Street look....
      8mm, 450°F-ratedPro-street applications
      $86.54
    • (0 reviews)
      # 906243082
      Mercury Grand Marquis 1984 Endurance Plus™ Wire Set by Accel®. Endurance Plus quality ignition wire sets are ready to install for most popular engine applications. Get these top-notch spark plug wires to achieve maximum performance...
      Quality retail aftermarket wire setsMaximum voltage and starting power
      $28.63 - $30.02
    • (0 reviews)
      # 819648077
      Mercury Grand Marquis 1984 Prestolite ProConnect™ Spark Plug Wire Set by Accel®. ProConnect ignition wire sets meet or exceed OE/OES specifications, performance and quality. These cables match the original color and are designed to...
      Carbon impregnated fiberglass coreFiberglass braid for added strength
      $39.68 - $42.55
    • (0 reviews)
      # 89593822
      Mercury Grand Marquis 1984 Super Stock™ Spark Plug Wire Set by Accel®. These Accel Super Stock wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with...
      7mm and 8mm, 550°F-ratedStreet-driven applications
      +1
      $41.09 - $60.56
    • (0 reviews)
      # 819577034
      Mercury Grand Marquis 5.0L 1984 Street-Fire™ Spark Plug Wire Set by MSD®. Designed utilizing the latest technology, this product by MSD features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $41.74 - $48.17
    • (0 reviews)
      # 960858756
      Mercury Grand Marquis 5.0L 1984 High Energy™ Ignition Wire Set by Taylor Cable®. These wires are a top choice for either street or race applications. Each wire is cut to length and terminated with Taylor’s low-profile silicone...
      Available For Street Or Track ApplicationsHigh Temperature and Oil Resistant Wire Insulation
      $37.61 - $43.68
    • (0 reviews)
      # 87806488
      Mercury Grand Marquis 5.0L 1984 Spiro-Pro™ Ignition Wire Set by Taylor Cable®. These plug wires are the top choice of racers and street enthusiasts for their high performance at an affordable price. With two layers of 100% silicone...
      Available For Street Or Track ApplicationsSpiro-Wound With Stainless Steel Wire
      $64.27 - $66.53
    • (0 reviews)
      # mpn1593896529
      Mercury Grand Marquis With Ford Small Block Engine 1984 Street Thunder™ Ignition Wire Set Over Valve Cover by Taylor Cable®. This products is an OEM and Performance company that was built on its founding heritage supported by a...
      Kevlar Helically Spiral Wound CoreDurable Silicone Double Layer Jacket
      $43.87
    • (0 reviews)
      # 87806495
      Mercury Grand Marquis 5.0L 1984 Street™ Street Ignition Wire Set by Taylor Cable®. Taylor's 8mm Spiro-Pro wire and stainless braided covering with polished aluminum boot protectors will provide an amazing accent in your engine...
      8mm silicone wire100% Silicone boots w/SS dual-spring connectors
      $96.34 - $221.54
    • (0 reviews)
      # 906112852
      Mercury Grand Marquis Base / LS 5.0L 1984 ThunderVolt™ Performance Performance Ignition Wire Set by Taylor Cable®. Gain horsepower and torque with Taylor’s Dyno-proven ThunderVolt racing plug wire sets. Low resistance for healthy...
      Exclusive copper/nickel alloy bonded by a conductive acrylic coverFerrite spiral-wound core provides low resistance for optimum RFI and RMI suppression
      +2
      $71.42
    • (0 reviews)
      # 960811596
      Mercury Grand Marquis With Ford Small Block Engine 1984 8.5 Series 50 Race™ Spark Plug Wire Set by AFIS®. Developed for high performance street cars and racing cars, AFIS has introduced a comprehensive new range of spiral-core...
      Superior jackets resist dielectric failureBoth reactive layer and inductive windings can transmit current without interference
      $79.95
    • (0 reviews)
      # 904801200
      Mercury Grand Marquis 5.0L 1984, Super Stock™ Front Super Stock Ignition Coil by Accel®. Accel's Super Stock coils are high-performance replacements for OE canister style coils. Improves starting, idle, throttle response and top RPM...
      Effective To 6500 RPM
      $28.34 - $32.54
    • (0 reviews)
      # 826447634
      Mercury Grand Marquis 1984, HEI Distributor by TSP®. With Coil.
      Designed for ultra high efficiencyProvides better performance
      +1
      $51.22 - $87.80
    • (0 reviews)
      # 826443861
      Mercury Grand Marquis 1984, Pro Series Pro-Billet™ Distributor by TSP®. W/O Coil. TSP's Pro Series Pro Billet Distributor is for the racer who needs added spark and precision for their high performance power plant. It features a high...
      Designed for ultra high efficiencyProvides better performance
      $105.18 - $109.76
    • (0 reviews)
      # 826410520
      Mercury Grand Marquis 1984, Pro Series™ Ready To Run Distributor by TSP®. W/O Coil.
      Designed for ultra high efficiencyProvides better performance
      $119.21 - $124.39
    • (0 reviews)
      # 826415339
      Mercury Grand Marquis 1984, Pro-Billet™ Distributor by TSP®. W/O Coil. TSP's Pro Billet distributor is designed to get the job done. They say there is beauty in simplicity - well, this small-cap distributor has it in spades. Lacking...
      Designed for ultra high efficiencyProvides better performance
      $53.35 - $54.88
    • (0 reviews)
      # 826588664
      Mercury Grand Marquis 1984, Ready To Run Distributor by TSP®. W/O Coil. TSP's Ready to Run distributor is designed for easy installation. With the included ignition module, all you'll need to complete your set-up is a coil. Using simple...
      Designed for ultra high efficiencyProvides better performance
      $53.35 - $54.88
    • (0 reviews)
      # mpn1593900738
      Mercury Grand Marquis With Ford Small Block Engine 1984, Vertex Distributor by Taylor Cable®. Ready to Run. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary...
      Housing Is Potted w/ A Premium Grade Epoxy EncasePrimary And Secondary Winding
      $355.15
    • (0 reviews)
      # 826400021
      Mercury Grand Marquis Base 5.0L With Ford Small Block Engine 1984, Flame-Thrower™ HEI Race Distributor by PerTronix®. Race HEI distributors feature an electronic module and 50,000 volt coil combination that optimizes spark energy and...
      New lightweight aluminum alloy housingHigh dielectric strength cap with brass terminals and low resistance coil brush
      $361.48 - $366.58
    • (0 reviews)
      # mpn1589831592
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Pro Race™ Circle Track Distributor by Fast®. When it comes to high end circle track racing where engines demand the most accuratetiming and reliable trigger signals,...
      The most accurate and advanced distributor for racingApproved for use in NASCAR competition
      $766.53
    • (0 reviews)
      # mpn1753047443
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Distributor by Professional Products®. Designed with expert craftsmanship this first-rate distributor provides effective power supply to each individual spark plug. Made from...
      Knob Provides Precise Timing SettingEasy installation
      $122.35
    • (0 reviews)
      # mpn1753047444
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Powerfire II™ Distributor by Professional Products®. Designed with expert craftsmanship this first-rate distributor provides effective power supply to each individual spark...
      Knob Provides Precise Timing SettingEasy installation
      $122.35
    • (0 reviews)
      # mpn474701987
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Distributor by Big End Performance®. Provides reliable spark throughout the rpm range, so they’ll deliver the performance you need. This affordable distributor has many...
      High quality at an affordable priceExpertly made from premium materials
      $234.08
    • (0 reviews)
      # 898418571
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Billet Racing Distributor by Racing Power Company®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
      One-of-a-kind style will help customize your autoWill deliver unparalleled levels of durability
      $79.00 - $88.42
    • (0 reviews)
      # 898342474
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, HEI Reliability Distributor by Racing Power Company®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
      50,000 Volt Coil built inCNC Machined Housing
      $78.32 - $99.48
    • (0 reviews)
      # 898366455
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Small Cap for Small Place Distributor by Racing Power Company®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
      Small Cap Design for better fitRequires an External Coil
      $82.93 - $102.02
    • (0 reviews)
      # mpn4268629055
      Mercury Grand Marquis Base 5.0L With Ford Small Block Engine With Motorcraft Distributor 1984, TFI Ford Module by PerTronix®. Performance ignition modules are direct replacements for popular GM and Ford electronic distributors. These...
      Thick film technology on alumina ceramic substrates removes heat for greater accuracy and improved reliabilityLaser trimming gives precise peak current control for increased energy output
      $67.43
    • (0 reviews)
      # mpn1589832414
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Hi-6RC Ignition Kit by Fast®. 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
      $686.10
    • (0 reviews)
      # mpn4499183122
      Mercury Grand Marquis 5.0L 1984, Front Distributor Control Module by Accel®. This high performance ignition module provides your plugs with more spark over the stock module. The solid state electronics provide high coil out put and...
      Fits Most Stock And Modified DistributorsDwell Control Circuit
      $60.56
    • (0 reviews)
      # mpn2111567
      Mercury Grand Marquis 5.0L 1984, Distributor Cap by Taylor Cable®. Periodic replacement of your distributor cap and rotor will keep your car running at peak efficiency. They should both be replaced at the same time.
      Made from alkyd moldingSuperior protection from cross firing and arcing
      $18.76
    • (0 reviews)
      # mpn2112200
      Mercury Grand Marquis 5.0L 1984, Distributor Cap and Rotor by Taylor Cable®. Periodic replacement of your distributor cap and rotor will keep your car running at peak efficiency. Here’s a matched set of distributor cap and rotor. They...
      Made from alkyd moldingSuperior protection from cross-firing and arcing
      $25.51
    • (0 reviews)
      # mpn2112217
      Mercury Grand Marquis 5.0L 1984, Distributor Rotor by Taylor Cable®. Periodic replacement of your distributor rotor will keep your car running at peak efficiency. Deteriorated distributor rotors can cause misfires by allowing the spark...
      Made from alkyd moldingSuperior protection from cross firing and arcing
      $13.12
    • (0 reviews)
      # mpn2111565
      Mercury Grand Marquis 5.0L 1984, Dura Spark™ Distributor Cap by Taylor Cable®. Periodic replacement of your distributor cap and rotor will keep your car running at peak efficiency. They should both be replaced at the same time.
      Made from alkyd moldingSuperior protection from cross firing and arcing
      $18.76
    • (0 reviews)
      # mpn2112198
      Mercury Grand Marquis 5.0L 1984, Dura Spark™ Distributor Cap and Rotor by Taylor Cable®. Periodic replacement of your distributor cap and rotor will keep your car running at peak efficiency. Here’s a matched set of distributor cap...
      Made from alkyd moldingSuperior protection from cross-firing and arcing
      $21.91
    • (0 reviews)
      # mpn2112215
      Mercury Grand Marquis 5.0L 1984, Dura Spark™ Distributor Rotor by Taylor Cable®. Periodic replacement of your distributor rotor will keep your car running at peak efficiency. Deteriorated distributor rotors can cause misfires by...
      Made from alkyd moldingSuperior protection from cross firing and arcing
      $11.97
    • (0 reviews)
      # mpn2869249648
      Mercury Grand Marquis 5.0L 1984, Rotor by Hypertech®. These Hypertech rotor are capable of increasing the output voltage of your coil, so you can gain more power and fuel economy. The Hypertech rotor is designed to give you a steady,...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $7.76
    • (0 reviews)
      # 826611320
      Mercury Grand Marquis 1984, Distributor Gear by PRW®. PRW bronze distributor gears are designed to minimize wear to your high performance camshaft. These distributor gears are crafted from superior quality bronze aluminum and are...
      Easily replacedRoll pin included
      $34.65 - $39.15
    • (0 reviews)
      # 826398424
      Mercury Grand Marquis 5.0L 1984, Distributor Drive Gear by Vertex Magnetos®. This products is an OEM and Performance company that was built on its founding heritage supported by a tradition of Legendary Quality. Designed utilizing the...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $56.01 - $87.55
    • (0 reviews)
      # mpn358502497
      Mercury Grand Marquis 5.0L With Ford Small Block Engine 1984, Ignition Crank Trigger Kit by Fast®. Engineers at FAST™ turned to the OEMs to see what they trust in the way of rpm-measuring crank triggers for their 400 and 500...
      Includes all required mounting hardware; plug and play with most aftermarket EFI systemsUltra durable CNC-machined aluminum bracket with clearly labeled precision timing marks
      $268.28
    • (0 reviews)
      # mpn4486063142
      Mercury Grand Marquis 5.8L 1984, Professional™ Double Platinum Spark Plug by ACDelco®. Designed for today’s most popular autos, as well as several marine applications, ACDelco’s Rapidfire® Platinum Spark Plugs fit engines using...
      Ribless insulator that improves the plug-to-boot sealTapered center wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage
      $7.15
    • (0 reviews)
      # 708046692
      Mercury Grand Marquis 1984, Professional™ Rapidfire Platinum Spark Plug by ACDelco®. Designed for today’s most popular autos, as well as several marine applications, ACDelco’s Rapidfire® Platinum Spark Plugs fit engines using...
      Ribless insulator that improves the plug-to-boot sealTapered center wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage
      $4.16
    • (0 reviews)
      # mpn2341105
      Mercury Grand Marquis 5.8L 1984, Copper Spark Plug by Champion®. Designed and manufactured to meet or exceed OE standards and specifications, these spark plugs by Champion ensure fast engine start-up and smooth acceleration. The...
      Copper Plus - Dependable Performance.Copper core center electrode allows for accurate control of heat range for longer life
      $1.50




    Guides & Articles

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