Mercury Comet Spark Plugs

Your One-Stop Shop For Trusted Mercury Comet Spark Plugs

If you’re in search of Mercury Comet Spark Plugs aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 65 Spark Plugs from top brands with prices ranging from $1.25 to $67.49.

Beyond great prices, we stock trusted brands manufacturing all types of Spark Plugs for your Mercury Comet.

And don’t forget to read customer reviews across all Spark Plugs categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Spark Plugs have to cost top dollar, and we prove it. Browse our top Mercury Comet Spark Plugs below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

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Essential Mercury Comet Spark Plugs

Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 14mm Tapered Seat, 42006 (Part No.42006)

Dorman - Help Spark Plug Non-Foulers - 14mm Tapered Seat, 42006

from

$8.49
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.
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Champion – Champion Copper Plus Spark Plug (RF14YC): Dependable Performance & Durability, 21 (Part No.21)

Champion Copper Plus Spark Plug (RF14YC): Dependable Performance & Durability, 21

from

$2.49
Copper Plus Spark Plug RF14YC delivers dependable performance and durability, making it a reliable choice for your vehicle’s ignition system. Featuring a copper core center electrode, it ensures precise heat control and enhanced conductivity, promoting longer life and consistent wear. The patented TinTac and ULTRASEAL coated shell provide superior corrosion resistance, safeguarding the plug against harsh conditions. Additionally, the SAC-9 semiconductor resistor effectively suppresses EMI and RFI, ensuring smooth engine operation without interference. Built to ISO and SAE Standards, this spark plug guarantees proven performance and compatibility with a wide range of vehicles. Whether you’re seeking improved ignition efficiency or extended durability, this spark plug offers exceptional value and reliability for your automotive needs.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 45 (Part No.45)

Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 45

from

$4.79
Autolite Copper spark plugs are expertly crafted to ensure quick starts and reliable performance for your vehicle or application. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrodes deliver extended life and durability. The high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, providing superior strength under demanding conditions. Designed with a corrosion-resistant nickel-plated shell, these spark plugs offer long-lasting durability. The tapered seat type and long projection center electrode design further optimize functionality, while the resistor ensures consistent performance. Engineered for good fuel economy, these spark plugs help you save on fuel costs without compromising on power or efficiency. With a standard-grade type and nickel tip materials, Autolite Copper spark plugs are a dependable choice for maintaining peak engine performance.
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Motorcraft – Motorcraft Spark Plug: Enhanced Durability & Reliable Performance, SP-459-X (Part No.SP-459-X)

Motorcraft Spark Plug: Enhanced Durability & Reliable Performance, SP-459-X

from

$5.99
Motorcraft Spark Plugs are engineered to deliver exceptional performance and reliability, making them the ideal choice for Ford, Lincoln, and Mercury vehicles. Designed with a fine wire platinum center electrode and nickel ground electrode tip, these spark plugs ensure precise ignition while resisting oxidation and arc erosion for long-lasting durability. The multi-rib insulator minimizes misfires, optimizing fuel efficiency and emissions, while service intervals of up to 100,000 miles provide peace of mind and reduced maintenance costs. As original equipment, they match specific engines to eliminate misfires and prevent false check engine lights, ensuring your vehicle runs smoothly. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are crafted from high-quality materials to meet strict Ford engineering standards, offering reliable performance for a wide range of domestic and import applications. Whether you’re maintaining your vehicle or restoring it to factory condition, Motorcraft Spark Plugs deliver the confidence and dependability you need.
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Champion – Champion Copper Plus Spark Plug RV17YC – Dependable Performance & Durability, 25 (Part No.25)

Champion Copper Plus Spark Plug RV17YC - Dependable Performance & Durability, 25

from

$4.79
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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NGK – NGK V-Power Nickel Spark Plug (WR5): Reliable Performance & Quick Starts, 2438 (Part No.2438)

NGK V-Power Nickel Spark Plug (WR5): Reliable Performance & Quick Starts, 2438

from

$6.99
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
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Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 18mm Tapered Seat, 42002 (Part No.42002)

Dorman - Help Spark Plug Non-Foulers - 18mm Tapered Seat, 42002

from

$10.99
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.
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Autolite – Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP25 (Part No.APP25)

Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP25

from

$7.49
The Double Platinum Spark Plug is engineered for exceptional durability and performance, making it a top choice for distributor-less ignition system (DIS) engines. Featuring a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring a longer service life compared to copper and standard platinum plugs. Its yttrium-enhanced ground electrode delivers superior heat transfer, allowing it to withstand high temperatures and pressures for extended durability. The high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is designed to deliver consistent ignition and efficiency. Both the center and ground electrode tips are crafted from platinum, ensuring robust functionality and reliability. Ideal for drivers seeking enhanced engine performance and longevity, this spark plug is built to meet the demands of modern engines.
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Autolite Iridium – Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP26 (Part No.XP26)

Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP26

from

$10.49
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.
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Motorcraft – Motorcraft Standard Spark Plug (ASF42CF4): Reliable Performance & Durability, SP-450-A (Part No.SP-450-A)

Motorcraft Standard Spark Plug (ASF42CF4): Reliable Performance & Durability, SP-450-A

from

$6.99
Standard Spark Plug (ASF42CF4) delivers reliable performance and durability, making it the ideal choice for maintaining your vehicle’s original efficiency. Engineered to meet strict Ford standards, these Motorcraft spark plugs are specifically matched to engines for enhanced durability, reduced fuel consumption, and optimized emissions. Designed with high-quality materials, they resist oxidation and arc erosion, ensuring long-lasting reliability with service intervals of up to 100,000 miles. The multi-rib insulator protects against misfires, while the exact fit guarantees seamless compatibility with Ford, Lincoln, and Mercury vehicles. Backed by Motorcraft’s Service Parts Warranty, these spark plugs help prevent false check engine lights, giving you confidence in their performance. Whether for domestic or import cars and trucks, Motorcraft spark plugs are the trusted choice for maintaining the original equipment standards your vehicle was built with.
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Champion – Champion Copper Plus Spark Plug RV15YC4 – Dependable Performance & Durability, 18 (Part No.18)

Champion Copper Plus Spark Plug RV15YC4 - Dependable Performance & Durability, 18

from

$3.99
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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ACDelco – ACDelco RAPIDFIRE Spark Plug, 2 (Part No.2)

ACDelco RAPIDFIRE Spark Plug, 2

from

$6.99
ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. 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.
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Motorcraft – Motorcraft Standard Spark Plug (BSF42C): Reliable Performance & Durability, SP-420-A (Part No.SP-420-A)

Motorcraft Standard Spark Plug (BSF42C): Reliable Performance & Durability, SP-420-A

from

$2.79
Standard Spark Plug (BSF42C) delivers reliable performance and durability, making it the ideal choice for maintaining your vehicle’s original equipment standards. Engineered specifically for Ford, Lincoln, and Mercury vehicles, these spark plugs ensure an exact fit while enhancing durability, reducing misfires, optimizing emissions, and improving fuel efficiency. Built with high-quality materials, they resist oxidation and arc erosion, ensuring long-lasting performance with service intervals of up to 100,000 miles. The multi-rib insulator design protects against misfires, while Motorcraft ignition components help prevent false check engine lights, giving you confidence in your vehicle’s operation. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are the same trusted components found in your vehicle at the time of manufacture, offering reliable performance for a wide range of domestic and import cars and trucks. Whether you’re maintaining your Ford or upgrading another vehicle, these spark plugs deliver the durability and reliability you need.
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Autolite – Autolite Racing Resistor Spark Plug: Enhanced Heat Transfer for Peak Performance, AR25 (Part No.AR25)

Autolite Racing Resistor Spark Plug: Enhanced Heat Transfer for Peak Performance, AR25

from

$4.99
Racing Resistor Spark Plug is expertly crafted to deliver peak performance in competitive racing environments. Featuring a cut-back ground electrode, it ensures optimal ignitability and superior heat transfer for quicker starts and maximum engine efficiency. The yttrium-enhanced alloy reduces ground wire temperature by up to 8%, making it ideal for colder heat ranges and performance modifications. Its anti-corrosive nickel plating resists rust better than black oxide, ensuring long-lasting durability. Designed with a high alumina multi-rib ceramic insulator, it offers exceptional thermal conductivity and insulation, preventing flash-over and enhancing strength. The tapered seat type optimizes performance across various racing venues, from oval tracks to road circuits. Built to withstand intense conditions, this spark plug is compatible with all aftermarket cylinder heads used in competitive racing. With a mid-projection center electrode and nickel tip materials, it combines reliability and efficiency, making it a top choice for racers seeking consistent, high-performance ignition.
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Spark Plugs Brands You Can Trust For Your Mercury Comet

9 trusted brands of Spark Plugs line our shelves, ready to help keep your Mercury Comet running smooth. Below are some of the most popular brands and their top Spark Plugs offerings:

Most Purchased Mercury Comet Spark Plugs from ACDelco

When you buy the most frequently purchased ACDelco brand Spark Plugs, you can be confident it will be the right part for your Mercury Comet. Here are the ACDelco Spark Plugs Advanced Auto customers buy the most:
ACDelco Conventional Spark Plug, CR43TS
from $6.49
(177)
ACDelco Conventional Spark Plug, CR43TS
Spark Plugs
ACDelco Conventional Spark Plug, R45TS
from $5.49
(100)
ACDelco Conventional Spark Plug, R45TS
Spark Plugs

FAQs for Mercury Comet Spark Plugs

What are the most purchased Spark Plugs for the Mercury Comet?

Out of 65 Spark Plugs for the Mercury Comet, the most popular in our inventory are:

What are the top-rated Mercury Comet Spark Plugs?

Top-rated Spark Plugs for your Mercury Comet based on customer reviews/ratings are:
E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.42
from $8.49
(184)
E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.42
“Replaced my fouled plugs in my 305 sbc with these. The truck is definitely running better than it ever has. Great throttle response.”
Motorcraft Platinum Spark Plug: Enhances Durability & Reduces Misfires, SP-502
from $6.99
(31)
Motorcraft Platinum Spark Plug: Enhances Durability & Reduces Misfires, SP-502
“Checked gap setting and they where on the money.”