2004 Mercury Grand Marquis Ignition and Tune-Up Products

Essential 2004 Mercury Grand Marquis Ignition and Tune-Up Products

Carquest Premium – Spark Plug Wire Set (Part No.35-8165)

Spark Plug Wire Set

from

$41.99
CARQUEST Premium Spark Plug Wire Sets are engineered to restore ignition wire reliability and performance. They are designed to meet or exceed OE design requirements, performance, fit, form and function of the OE wire. Stainless steel magnetic winding del

Product Features:
  • SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
  • Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
  • 100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
  • EPDM inner insulation stops power-robbing voltage leaks.
  • With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
  • Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
  • Excellent interference suppression and consistent performance
  • Easy lock terminals for more convenient installation.
  • Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
  • Broad coverage available for most vehicles on the road today
  • Include grease pack to ensure easy installation and removal
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MSD Ignition – Wire Set; Street Fire; Ford 302; 351W; HEI (Part No.5541)

Wire Set; Street Fire; Ford 302; 351W; HEI

from

$63.29
The street fire spark plug wires feature a low resistance conductor that’s wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.

Product Features:
  • Helically wound conductor suppresses electro and radio noise
  • Kevlar core combination for great strength and durability
  • Heavy Duty Terminals For Secure Connection
  • 8mm silicone and synthetic jacket resists heat and abrasion
  • 500 Ohms/ft. Resistance For Improved Spark Delivery And Power
  • Silicone Boots Protect Against High Exhaust Temps
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E3 – High Output Ford 2-Valve Coil (Part No.E3.624)

High Output Ford 2-Valve Coil

from

$29.99
With more than double the energy output of a stock coil, E3s new 2 Valve coil features a stainless steel spark plug contact ring with a ferrite lug to suppress EMI/ RFI noise. Designed to work with the factory DIS electronic controls as well as high performance aftermarket ignition systems, the resistance and inductance values have been optimized to increase output at high RPM levels. Our high temperature epoxy resists shock and vibration while providing excellent thermal conductivity ensuring extra long life. Additionally, the spark plug boots are molded in a special high temperature 550 degree F silicone compound. Fits the 1997 to 2013 2 Valve Ford engines.

Product Features:
  • Designed to work with factory DIS electronic ignition systems
  • High temperature epoxy provides excellent thermal conductivity and long life
  • Stainless steel spark plug contact ring and optimized resistance and inductance provide high output at higher RPM levels
  • Fits 1997-2013 2-Valve Ford engines
  • Crosses to MSD 8248
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Bosch – Knock Sensor (Part No.0261231316)

Knock Sensor

from

$28.99
Bosch OE quality knock sensors for optimum engine protection and fuel consumption reduction up to 9%

Product Features:
  • Bosch OE quality knock sensors for optimum engine protection
  • Los sensores de golpeo o fase Bosch son diseñados bajo especificaciones de equipo original para una mejor protección del Motor
  • Bosch OE quality knock sensors increase torque up to 5%
  • Bosch OE quality knock sensors enable the use of multiple quality fuels with various anti-knock properties
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Carquest Premium – Ignition Knock (Detonation) Sensor (Part No.SBA3803)

Ignition Knock (Detonation) Sensor

from

$75.99
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.
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Accel – Accel Ford 3 Vlv Mtr Coil Kit (Part No.140033-8)

Accel Ford 3 Vlv Mtr Coil Kit

from

$334.99
ACCEL Super Coils feature advanced bobbin technology, highly specialized silicon magnetic steel cores, optimized windings, proper resistance and engineered turn ratios that deliver a high performance, quality coil. Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity. These are direct high performance replacements for OEM coils.

Product Features:
  • Specialized silicone magnetic steel cores are surrounded by precision wrapped windings using advanced bobbin technology which helps maintain the proper resistance and turn ratios necessary to deliver improved performance spark
  • Advanced Bobbin Technology
  • Direct Plug In Replacement results in a Direct OE Fit
  • OBD ll Safe, so you won’t be throwing codes, just sparks
  • Standard Motor Products SMP Fd-508
  • MSD 8243 82438
  • 8 Pack
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Accel – Ford 2 Valve Engine Performance Coil Kit (Part No.140032-8)

Ford 2 Valve Engine Performance Coil Kit

from

$199.99
ACCEL Super Coils feature advanced bobbin technology, highly specialized silicon magnetic steel cores, optimized windings, proper resistance and engineered turn ratios that deliver a high performance, quality coil. Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity. These are direct high performance replacements for OEM coils.

Product Features:
  • Specialized silicone magnetic steel cores are surrounded by precision wrapped windings using advanced bobbin technology which helps maintain the proper resistance and turn ratios necessary to deliver improved performance spark
  • Advanced Bobbin Technology
  • Direct Plug In Replacement results in a Direct OE Fit
  • OBD ll Safe, so you won’t be throwing codes, just sparks
  • Standard Motor Products SMP Fd-503
  • MSD 8242 82428
  • 8 Pack
See More

Carquest Premium – Ignition Switch (Part No.CSA1106)

Ignition Switch

from

$25.99
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.
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Carquest Premium – Ignition Switch (Part No.CSA1523)

Ignition Switch

from

$39.49
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.
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Driveworks – Ignition Coil (Part No.26326)

Ignition Coil

from

$59.05
Driveworks offers a line of aftermarket parts and accessories that are commercially acceptable and competitively priced, which provides professional technicians and DIYers with an affordable alternative for repairs.

Product Features:
  • Direct-fit OE replacement ensures ease of installation
  • Designed to meet OE performance
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
  • As the leader in commercially acceptable parts, we provide professional technicians with the quality parts they need
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Accel – High-Performance Ignition Coils for Ford 2-Valve Engines (Part No.140032)

High-Performance Ignition Coils for Ford 2-Valve Engines

from

$24.99
ACCEL Super Coils feature advanced bobbin technology, highly specialized silicon magnetic steel cores, optimized windings, proper resistance and engineered turn ratios that deliver a high performance, quality coil. Specialized high temperature epoxy resists shock and vibration, while increasing thermal conductivity. These are direct improved performance replacements for OEM coils.

Product Features:
  • Specialized silicone magnetic steel cores are surrounded by precision wrapped windings using advanced bobbin technology which helps maintain the proper resistance and turn ratios necessary to deliver improved performance spark
  • Advanced Bobbin Technology
  • Direct Plug In Replacement results in a Direct OE Fit
  • OBD ll Safe, so you won’t be throwing codes, just sparks
  • Standard Motor Products SMP Fd-503
  • MSD 8242 82428
  • Resists Shock And Vibration
  • Resists Corrosion
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ACDelco – Double Platinum Spark Plug (Part No.41-803)

Double Platinum Spark Plug

from

$9.79
ACDelco Gold (Professional) Double Platinum Spark Plug are a high quality alternative to Original Equipment (OE) parts. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.

Product Features:
  • One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
  • Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
  • Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
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Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.26)

Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration

from

$3.49
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration, Autolite Copper Core spark plugs are designed to meet or exceed OES design requirements. Consider upgrading to Autolite Platinum, Double Platinum or Iridium XP plugs for improved engine performance. Copper core plugs are the industry standard.

Product Features:
  • 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”
  • One-piece terminal post adds strength
  • Resistor reduces radio frequency interference (RFI) and electrode erosion
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Carquest – Air Charge Temperature Sensor Connector (Part No.PT5749)

Air Charge Temperature Sensor Connector

from

$27.49
BWD is an aftermarket leader, providing a premium line of engine management products. BWD manufactures and distributes high technology critical components for late model domestic and import vehicles. BWD is constantly evolving to give customers the competitive edge they need to compete in today’s ever-changing marketplace.

Product Features:
  • Our ignition coils use 100% pure copper windings in the primary and secondary bobbins to improve durability and provide higher resistance to internal shorts and dielectric breakdown
  • Our premium ignition coils consist of a special blended formula for the best performance, longest life and better heat dissipation
  • A full E-Lam core of silicon steel and solid brass high voltage terminals protects against corrosion. Our ignition coils are built for maximum output voltage
  • Primary and Secondary windings feature enamel magnet wire for the highest temperature rating in the aftermarket
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
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Carquest Premium – Ignition Coil Connector (Part No.PTA1082)

Ignition Coil Connector

from

$18.29
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.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Dorman – Ignition Pulsator Ring (Part No.917-060)

Ignition Pulsator Ring

from

$32.99
This ignition pulsator ring is designed to match the fit and function of the original ring on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this ignition pulsator ring is designed to match the fit and function of the original ring on specified vehicles
  • Ideal solution – this ring is a reliable replacement for an original part that is damaged or has failed due to fatigue
  • Durable construction – this ring is made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Carquest Premium – Ignition Switch Connector (Part No.PTA1283)

Ignition Switch Connector

from

$8.29
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.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – Ignition Switch Connector (Part No.PTA1318)

Ignition Switch Connector

from

$19.99
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.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
See More

Carquest Premium – Spark Plug Wire Set: 8 Wires, Increased performance, Designed for direct fit (Part No.35-8187)

Spark Plug Wire Set: 8 Wires, Increased performance, Designed for direct fit

from

$77.99
Product Features:
  • SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
  • Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
  • 100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
  • EPDM inner insulation stops power-robbing voltage leaks.
  • With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
  • Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
  • Excellent interference suppression and consistent performance
  • Easy lock terminals for more convenient installation.
  • Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
  • Broad coverage available for most vehicles on the road today
  • Include grease pack to ensure easy installation and removal
See More

MSD Ignition – Wire Set; Street Fire; Ford 351W; 400; 460; HEI; 77-on (Part No.5540)

Wire Set; Street Fire; Ford 351W; 400; 460; HEI; 77-on

from

$72.99
The street fire spark plug wires feature a low resistance conductor that’s wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.

Product Features:
  • Helically wound conductor suppresses electro and radio noise
  • Kevlar core combination for great strength and durability
  • Heavy Duty Terminals For Secure Connection
  • 8mm silicone and synthetic jacket resists heat and abrasion
  • 500 Ohms/ft. Resistance For Improved Spark Delivery And Power
  • Silicone Boots Protect Against High Exhaust Temps
See More

DENSO – Spark Plug Wire Set: Carbon Core, 9 Wire Set (Part No.671-8105)

Spark Plug Wire Set: Carbon Core, 9 Wire Set

from

$46.49
DENSO First Time Fit Ignition Wire Sets are identical in form fit color and performance to the factory-installed wire sets. Every part of each wire sets construction meets or exceeds OE/OES standards.

Product Features:
  • Each wire is pre-cut to exact length so the wire set is ready to install right out of the box
  • Identical OE end caps are designed to “click” into place for easy installation and a secure fit
  • Strong connections – through a patented process, the terminals are attached to provide an extremely strong connection, ensuring the cable and boot will not separate during removal and installation
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DENSO – Coil On Plug Boots-8 (Part No.671-8110)

Coil On Plug Boots-8

from

$62.99
DENSO First Time Fit COP boot sets are identical in form fit color and performance to the factory-installed boots. Every part of each COP boot set construction meets or exceeds OE/OES standards.

Product Features:
  • OE design ensures a tight boot seal that protects against moisture intrusion
  • High temperature resistant material provides greater protection against thermal overload
  • Stainless steel internal spring with resistor to suppress RFI and deliver maximum voltage to the plug
  • Engineered to the specifications used by the original vehicle manufacturer for an exact fit
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Dorman – Help – Ignition Cylinder Actuator (Part No.47510)

Ignition Cylinder Actuator

from

$25.99
This ignition switch actuator is designed to match the appearance and function of the original actuator on specified applications, and is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this ignition switch actuator is made to match the fit and performance of the original actuator on specific vehicle applications
  • Ideal solution – this actuator is a reliable replacement for an original part that has failed due to fatigue
  • 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
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MSD Ignition – Wire Set; Black Super Conductor; Ford 302; 351W; HEI (Part No.31323)

Wire Set; Black Super Conductor; Ford 302; 351W; HEI

from

$147.99
The MSD 8.5mm super conductor wire is the performance wire. Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference. In a single 12 inch length of super conductor wire there is only 40 – 50 ohms of resistance. That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it’s great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective electro magnetic interference (EMI) or choke. This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. Available in universal kits and bulk lengths.

Product Features:
  • Custom Fit For Make And Model Listed
  • Wires Are Pre-Cut To Exact Specifications
  • Bolt-on Performance
  • Conductor core features DuPont Kevlar material for increased tensile strength
  • Durable outer sleeve is a proprietary compound for resistance to high heat or abrasion
  • Stainless steel terminals feature dual crimp tabs to grip wire conductor and outer jacket separately
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Carquest Premium – Coil On Plug Insulator Boot: Spring included, Designed for direct fit (Part No.35-7006)

Coil On Plug Insulator Boot: Spring included, Designed for direct fit

from

$8.49
CARQUEST Premium coil on plug boots are engineered to restore ignition boot reliability and performance. We have OE design providing an exact direct fit for your application and the performance and durability meet or exceed OE requirements. It offers excellent heat resistance as well as maximum protection against spark loss. With durable silicone compound for resistance to high heat or abrasion.

Product Features:
  • Provides excellent heat resistance as well as maximum protection against spark loss.
  • Durable silicone compound for resistance to high heat or abrasion
  • Spring included with the coil boot
  • Design for direct compatibility
  • OE design provides an exact fit for your application
  • Multipack provides one time replace all COP for better deal
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Motorcraft – Ignition Wire Set (Part No.F1020361172MTR)

Ignition Wire Set

from

$66.17
The Motorcraft Ignition wire set is a direct fit OEM replacement that guarantees the same performance and quality provided by the vehicle manufacturer.

Product Features:
  • OEM quality
  • OEM connectors for easy Installation.
  • Resistant to high temperatures, corrosion and vibration.
  • Ignition noise suppressed.
  • Reduces the chance of misfire
  • Increases engine life
  • Protects against wire set failure
See More

Carquest Premium – Spark Plug Wire Set: 9 Wires, Increased performance, Designed for direct fit (Part No.35-8194)

Spark Plug Wire Set: 9 Wires, Increased performance, Designed for direct fit

from

$35.99
Product Features:
  • SAEJ2031 Class E cable resist heat (428 Deg. F), cold (-104 Deg. F), electrical interference, abrasion and oil.
  • Stainless steel magnetic winding delivers maximum voltage to the spark plug for more powerful, and longer spark resulting in optimum engine performance while reducing the chance for misfire, and eliminating radio static.
  • 100% Pure silicone external insulation resists oil penetration, for lifetime protection against wire set failure.
  • EPDM inner insulation stops power-robbing voltage leaks.
  • With Magnetic-impregnated Kevlar internal conductors – durable and break resistant
  • Engineered to meet OEM tolerances using variable pitch wire winding, creating better resistance to electric magnetic interference (E.M.I resistance).
  • Excellent interference suppression and consistent performance
  • Easy lock terminals for more convenient installation.
  • Thick silicon outer jacket for excellent heat resistance. Insulating EPDM based compound inner jacket helps minimize voltage drop and enhance durability.
  • Broad coverage available for most vehicles on the road today
  • Include grease pack to ensure easy installation and removal
See More

Motorcraft – Spark Plug Wire: 2 Year Warranty Unlimited Miles, Set of 8 Wires (Part No.WR-5934)

Spark Plug Wire: 2 Year Warranty Unlimited Miles, Set of 8 Wires

from

$201.99
Motorcraft Plug Wires are Manufactured of premium-quality materials to strict Ford Engineering standards. High-Dielectric Insulation helps maintain and control voltage delivery while reducing Radio Frequency Interference. EPDM/Silicone wire jacket, spark plug & coil/ distributor insulators help protect against oil and high temperatures. Optimized wire lengths help minimize part numbers while still providing proper fit. Designed and Tested to Stringent Ford Standards.

Product Features:
  • Backed by Motorcraft’s Service Parts Warranty
  • Designed for long life – key life durability testing (equivalent to 10 years/150,000 miles) is conducted in addition to on-vehicle durability testing.
  • Optimized wire lengths help minimize part numbers while still providing proper fit.
  • Wires are optimum lengths for easy installation.
  • EPDM/Silicone wire jacket, spark plug AND coil / distributor insulators help protect against oil and high temperatures.
  • Motorcraft ignition components help prevent false check engine lights.
See More

2004 Mercury Grand Marquis Ignition and Tune-Up Products

You count on your 2004 Mercury Grand Marquis to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Ignition and Tune-Up Products. With 61 Ignition and Tune-Up Products ranging in price from $2.99 to $330.99, you’re sure to find everything you need for your 2004 Mercury Grand Marquis.

Brands matter. If you want to shop a specific Ignition and Tune-Up Products brand, we stock 15 different brands like NGK, Autolite, and Motorcraft. 2004 Mercury Grand Marquis Ignition and Tune-Up Products start as low as $2.99!

One of the best ways to find top quality OEM or aftermarket Ignition and Tune-Up Products is by asking professionals. Short of that, you can shop with confidence thanks to our 4,144 extensive product reviews on 2004 Mercury Grand Marquis Ignition and Tune-Up Products. Some of the top-rated Ignition and Tune-Up Products products we carry are Ignition Coil with 4.7 stars and Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece with 4.7 stars.

Did we mention you can order your Ignition and Tune-Up Products from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Ignition and Tune-Up Products inventory for your 2004 Mercury Grand Marquis below to get started!

Top-Rated Ignition and Tune-Up Products Brands For Your 2004 Mercury Grand Marquis

Trusted Ignition and Tune-Up Products OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2004 Mercury Grand Marquis running right for years to come. In our inventory you’ll find brands like NGK, Autolite, Motorcraft, and even more.

Popular Autolite Ignition and Tune-Up Products

You’ll find popular Autolite brand products across Spark Plugs. All are waiting to get your 2004 Mercury Grand Marquis back on the road. Some of the top-rated Autolite products in these categories are:

Top-Rated NGK Ignition and Tune-Up Products


If NGK are what you’re looking for, our inventory holds plenty. We stock NGK brand Ignition and Tune-Up Products for your 2004 Mercury Grand Marquis, and some of our most reviewed NGK parts include:

FAQs for 2004 Mercury Grand Marquis Ignition and Tune-Up Products

What are the most purchased Ignition and Tune-Up Products for the 2004 Mercury Grand Marquis?

Out of 61 Ignition and Tune-Up Products for the 2004 Mercury Grand Marquis, the most popular in our inventory are:
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
from $9.99
This product is not rated
Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition
Spark Plugs

What are the top-rated 2004 Mercury Grand Marquis Ignition and Tune-Up Products?

Top-rated Ignition and Tune-Up Products for your 2004 Mercury Grand Marquis based on customer reviews/ratings are:
Ignition Coil
from $59.05
(175)
Ignition Coil
“Good fit , so far so good”
Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece
from $80.99
(118)
Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece
“Easy to install and was exact match to my 2001 Expedition. Cons: High price$$, only replaced one ignition coil. If had to replace all eight would”
PT16TT Platinum TT Spark Plug
from $5.99
(90)
PT16TT Platinum TT Spark Plug
“On line”