1990 Mercury Cougar Spark Plugs

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Keep Your 1990 Mercury Cougar in Top Shape with Quality Spark Plugs

Whether you’re repairing or upgrading your Spark Plug, using high-quality parts is key to keeping your 1990 Mercury Cougar looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Spark Plugs and Spark Plug Non-Foulers. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Spark Plugs from Trusted Brands

Looking for a reliable Spark Plug? We’ve got you covered with options from brands you know and trust like NGK, Autolite, and DENSO. For example, NGK Spark Plugs start at just $5.99 with an average 4.8 star rating. Autolite and DENSO offer similar pricing and quality, backed by strong customer feedback. With over 1,170 reviews and a solid 4.7 star average, you can shop with confidence knowing other Mercury Cougar owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1990 Mercury Cougar Spark Plug at Advance Auto Parts is around $8.85, with a range that starts at $1.25 and goes up to $16.99. With 23 options in stock from 6 trusted brands, finding the right fit is easy. Popular picks like DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT, 4713, Motorcraft Double Platinum Spark Plug (ASF44P): Enhanced Durability & Reliability, SP-504, and Autolite Platinum Spark Plug (AP5144): Improved Performance & Durability start at just $5.49 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Spark Plug, don’t forget to check out other key components like Distributors and Ignition Coils and Boots. At Advance Auto Parts, we’re here to help you keep your 1990 Mercury Cougar in peak condition, inside and out.

Essential 1990 Mercury Cougar Spark Plugs

Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 14mm Tapered Seat, 42008 (Part No.42008)

Dorman - Help Spark Plug Non-Foulers - 14mm Tapered Seat, 42008

from

$10.49
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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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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Motorcraft – Motorcraft Spark Plug, Platinum Center Electrode Tip Material, Copper Core, SP-501 (Part No.SP-501)

Motorcraft Spark Plug, Platinum Center Electrode Tip Material, Copper Core, SP-501

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$7.29
Motorcraft Spark Plug, Platinum Center Electrode Tip Material, Copper Core, SP-501.
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NGK – NGK Iridium IX Spark Plug (TR5IX): Extreme Ignitability & Durability, 7397 (Part No.7397)

NGK Iridium IX Spark Plug (TR5IX): Extreme Ignitability & Durability, 7397

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$14.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
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Champion – Champion Double Platinum Power Spark Plug RS14PYPB5 – Enhanced Durability & Performance, 7940 (Part No.7940)

Champion Double Platinum Power Spark Plug RS14PYPB5 - Enhanced Durability & Performance, 7940

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$8.89
Champion Double Platinum Power spark plugs combine a platinum fine-wire center electrode with platinum center and ground electrodes and exclusive Heat-Active alloy, ensuring powerful performance, longer service life and precise spark focus for optimal combustion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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ACDelco – ACDelco Conventional Spark Plug, CR45TS (Part No.CR45TS)

ACDelco Conventional Spark Plug, CR45TS

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$6.49
ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
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DENSO – DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16EPR-L13, 5070 (Part No.5070)

DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16EPR-L13, 5070

from

$12.49
Manufactured to the strictest OE performance, durability and emissions standards.
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E3 – E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.54 (Part No.E3.54)

E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.54

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$8.49
“The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “”diamond-shaped”” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger flame kernel and improved power output – up to 6% on average. This advanced design not only boosts energy but also promotes fuel savings and reduces engine carbon deposits for a cleaner, more efficient operation. Constructed with durable nickel center and ground electrode tips, it offers long-lasting reliability. The tapered seat type ensures a secure fit, and the pre-gapped design eliminates the need for adjustments, making installation hassle-free. Upgrade to this spark plug for enhanced performance, better fuel economy, and a cleaner engine.”
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Motorcraft – Motorcraft Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption, SP-493 (Part No.SP-493)

Motorcraft Platinum Spark Plug: Enhances Durability & Reduces Fuel Consumption, SP-493

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$9.29
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. Backed by Motorcraft’s Service Parts Warranty, they are an exact fit for Ford, Lincoln, and Mercury vehicles and are resistant to oxidation and arc erosion. The multi-rib insulator protects against misfire, and with service intervals of up to 100,000 miles, these spark plugs are designed with high-quality materials to provide reliable performance for almost any application. Motorcraft Spark Plugs are what was in the vehicle when it was manufactured, and their ignition components help prevent false check engine lights. Featuring platinum center and ground electrode tips, these spark plugs deliver the performance, reliability, and confidence you expect.
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Bosch – Bosch OE Fine Wire Double Iridium Spark Plug: High Performance & Longevity, 9601 (Part No.9601)

Bosch OE Fine Wire Double Iridium Spark Plug: High Performance & Longevity, 9601

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$12.49
BOSCH OE Fine Wire Double Iridium. All iridium plugs are NOT created equal. Give your customers the only one engineered for both high performance and long life. The ultra fine wire design and laser welded, tapered ground electrode deliver the ultimate in ignitability and high performance. The iridium-alloy center electrode firing pin and laser welded ground electrode with iridium alloy inlay help it to go the distance.
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Champion – Champion Copper Plus Spark Plug RF11YC – Dependable Performance & Durability, 22 (Part No.22)

Champion Copper Plus Spark Plug RF11YC - Dependable Performance & Durability, 22

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$4.29
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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E3 – E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.72 (Part No.E3.72)

E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.72

from

$8.49
The Spark Plugs are the product of years of fundamental research in the combustion field. The unique patented electrode configuration of these new The spark plugs increases the amount of combustion pressure created during each power stroke of an engine, which results in a marked increase in power output, fuel economy, and reduced emissions in all gasoline engines. E3.72 is an 18mm, 0.430 reach plug with a taper seat. It primarily fits Ford applications from the 50s to 90s. The automotive plugs have three legs securing the Diamond FIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented Diamond FIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use.
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E3 – E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.62 (Part No.E3.62)

E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.62

from

$8.49
“The Premium DiamondFire Automotive Spark Plug is engineered to deliver peak performance and efficiency for your vehicle. Featuring E3’s patented Diamond Fire edge-to-edge ground electrode, it ensures a faster, more complete burn for smoother acceleration and idle. The innovative “”diamond-shaped”” side wire electrode enhances combustion by quickly igniting the air/fuel mixture, resulting in a larger and faster flame kernel. This translates to improved power output by up to 6% on average and greater fuel efficiency, reducing engine carbon deposits and saving you money at the pump. Constructed with durable nickel for both the center and ground electrode tips, this spark plug is built to last. Its tapered seat design ensures a secure fit, and the pre-gapped configuration eliminates the need for adjustments, making installation hassle-free. Upgrade to the DiamondFire Spark Plug for cleaner combustion, enhanced engine performance, and long-term reliability.”
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ACDelco – ACDelco Double Platinum Spark Plug, 41-803 (Part No.41-803)

ACDelco Double Platinum Spark Plug, 41-803

from

$11.49
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.
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NGK – NGK G-Power Spark Plug (TR5GP): Enhanced Durability & Fuel Efficiency, 3186 (Part No.3186)

NGK G-Power Spark Plug (TR5GP): Enhanced Durability & Fuel Efficiency, 3186

from

$8.99
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
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ACDelco – ACDelco Conventional Spark Plug, R44LTS (Part No.R44LTS)

ACDelco Conventional Spark Plug, R44LTS

from

$6.49
ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.
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Accel – Accel HP Copper Spark Plug – 14mm Thread – .460 inReach – 8 Pack of 0576, 8179 (Part No.8179)

Accel HP Copper Spark Plug - 14mm Thread - .460 inReach - 8 Pack of 0576, 8179

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$56.19
ACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 3926 (Part No.3926)

Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 3926

from

$4.49
Autolite Copper spark plugs are expertly crafted to ensure reliable performance and durability for your vehicle. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are designed for extended life, while the high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation for added strength. With a nickel-plated shell, these spark plugs resist corrosion, providing long-lasting durability. Engineered for good fuel economy, they help reduce fuel costs without compromising performance. The standard center electrode design with mid projection and nickel tip material ensures optimal ignition, while the flat seat type and resistor functionality further enhance reliability. Perfect for regular-grade applications, these spark plugs deliver quick starts and the power needed to meet your vehicle’s performance expectations.
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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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DENSO – DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16VR13, 5068 (Part No.5068)

DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16VR13, 5068

from

$11.99
Double Platinum Spark Plug PT16VR13 is engineered to meet the highest OE performance, durability, and emissions standards, ensuring optimal compatibility and efficiency for your vehicle. Featuring OE-grade platinum on both the center and ground electrodes, this spark plug delivers sustained spark performance for over 60,000 miles, reducing secondary required voltage and boosting ignition efficiency. Its premium shell construction with machine-rolled threads enhances durability, while superior thermal conductivity ensures reliable operation under demanding conditions. Designed with a tapered seat type, it provides a secure fit and improved combustion efficiency, making it a trusted choice for reducing shop comebacks and satisfying customers. Built for long-lasting performance, this double platinum spark plug is the ideal solution for maintaining your vehicle’s peak performance.
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NGK – NGK Laser Platinum Spark Plug (PTR5F-11): Enhanced Fuel Efficiency & Durability, 6579 (Part No.6579)

NGK Laser Platinum Spark Plug (PTR5F-11): Enhanced Fuel Efficiency & Durability, 6579

from

$21.99
NGK Laser Platinum spark plugs provide high ignitability and longer service life compared to conventional nickel spark plugs. Laser Platinum plugs are tested to the highest standards to ensure quality and durability. Engineered specifically for OE applications. Laser platinum plugs provide stable idling, superior anti-fouling, improved fuel efficiency and lower emissions. High-grade pure alumina ceramic and 98% pure copper core prevents spark plug from overheating and provides reliable starts. Most Laser Platinum spark plugs feature a platinum pad on the ground electrode for even wear in distributorless ignition systems.
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Champion – Champion Copper Plus Spark Plug RS12YC – Dependable Performance & Durability, 401 (Part No.401)

Champion Copper Plus Spark Plug RS12YC - Dependable Performance & Durability, 401

from

$4.19
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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Motorcraft – Motorcraft Spark Plug: Quick Starts & Enhanced Fuel Economy, SP-450 (Part No.SP-450)

Motorcraft Spark Plug: Quick Starts & Enhanced Fuel Economy, SP-450

from

$4.79
The Spark Plug: Quick Starts & Enhanced Fuel Economy by Motorcraft is the same high-quality part installed when your engine first rolled off the assembly line, ensuring a perfect fit and reliable performance. Designed and recommended by Ford Motor Company, these spark plugs are engineered to deliver quick starts, improved fuel economy, and smooth acceleration, making them an essential component for maintaining your vehicle’s peak performance. Featuring a tapered seat type, they provide a secure and precise fit, reducing the risk of leaks or misfires. Built to meet the exacting standards of Ford, these spark plugs offer exceptional durability and long-lasting performance, giving you confidence in every drive. Whether you’re replacing worn-out plugs or performing routine maintenance, this part ensures your engine runs efficiently and reliably, offering excellent value for your investment.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 105 (Part No.105)

Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 105

from

$3.49
Autolite Copper spark plugs are designed to provide reliable performance and durability, making them an excellent choice for maintaining your vehicle’s efficiency. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring consistent operation. The high nickel alloy center and ground electrodes are engineered for extended life, while the mid-projection design optimizes spark delivery. A high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, contributing to superior strength and reliability. The nickel-plated shell resists corrosion, ensuring long-lasting durability even in demanding conditions. With a tapered seat type and integrated resistor, these spark plugs are built to meet performance expectations, delivering quick starts and the power your vehicle needs.
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ACDelco – ACDelco Conventional Spark Plug, R85TS (Part No.R85TS)

ACDelco Conventional Spark Plug, R85TS

from

$4.29
ACDelco Gold (Professional) Conventional Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These Conventional Spark Plugs are designed for reliability and efficient performance, and are the high quality replacements for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. 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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Champion – Champion Platinum Power Spark Plug RS10PYC – Powerful Performance & Longevity, 3408 (Part No.3408)

Champion Platinum Power Spark Plug RS10PYC - Powerful Performance & Longevity, 3408

from

$6.49
Champion Platinum Power spark plugs deliver powerful performance with the exclusive Premium alloy that reaches and sustains the correct operating temperature. A fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus and reliable ignition for consistent combustion under demanding conditions. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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ACDelco – ACDelco Double Platinum Spark Plug, 41-905 (Part No.41-905)

ACDelco Double Platinum Spark Plug, 41-905

from

$11.49
ACDelco Professional Double Platinum Spark Plugs are premium aftermarket plugs, and are a high quality replacement for many vehicles on the road today. 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.
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NGK – NGK G-Power Platinum Spark Plug (LTR5GP): Enhanced Durability & Efficiency, 5019 (Part No.5019)

NGK G-Power Platinum Spark Plug (LTR5GP): Enhanced Durability & Efficiency, 5019

from

$10.99
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
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Most Popular Spark Plugs for 1990 Mercury Cougars

Enhance your 1990 Mercury Cougar with one of the 22 Spark Plugs we have in stock, starting at just $2.49.

DENSO – DENSO Iridium Long-Life Spark Plug: OE Performance, ZTJ16R10, 5090 (Part No.5090)

DENSO Iridium Long-Life Spark Plug: OE Performance, ZTJ16R10, 5090

from

$13.49
Manufactured to the strictest OE performance, durability and emissions standards.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 2545 (Part No.2545)

Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 2545

from

$4.49
Autolite Copper spark plugs are designed to deliver reliable performance, ensuring quick starts and the power your vehicle demands. Featuring a copper core center electrode, these plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrodes provide extended durability. The high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, offering superior strength. With a corrosion-resistant nickel-plated shell, these spark plugs are built to last. Their tapered seat design ensures a secure fit, while the long projection center electrode optimizes performance. Engineered to meet or exceed Original Equipment Service (OES) Standards, they guarantee dependable operation. Additionally, these spark plugs are designed to improve fuel economy and deliver smoother, more responsive acceleration, making them a valuable upgrade for your vehicle.
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NGK – NGK G-Power Platinum Spark Plug (TR55-1GP): Enhanced Durability & Efficiency, 7159 (Part No.7159)

NGK G-Power Platinum Spark Plug (TR55-1GP): Enhanced Durability & Efficiency, 7159

from

$8.99
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
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NGK – NGK Iridium IX Spark Plug (TR55-1IX): Enhanced Acceleration & Durability, 7316 (Part No.7316)

NGK Iridium IX Spark Plug (TR55-1IX): Enhanced Acceleration & Durability, 7316

from

$16.99
NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode’s durability is six times harder than platinum. Iridium alloy’s extremely high melting point is perfect for today’s engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.
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Autolite – Autolite Platinum Spark Plug: Enhanced Durability & Performance, AP5145 (Part No.AP5145)

Autolite Platinum Spark Plug: Enhanced Durability & Performance, AP5145

from

$4.99
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, better acceleration, and improved fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator enhances thermal conductivity and insulation for added strength. Designed with a long projection standard center electrode and a nickel-plated shell, these spark plugs resist corrosion and deliver extended durability. The multi-rib insulator prevents flash-over, ensuring reliable operation, and the tapered seat type offers a secure fit. With a performance-grade design and nickel ground electrode tip material, these spark plugs are built to meet the demands of high-performance engines while maintaining consistent reliability. Whether you’re seeking enhanced efficiency or long-lasting durability, these spark plugs are a dependable choice for your vehicle.
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Motorcraft – Motorcraft Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption, SP-409 (Part No.SP-409)

Motorcraft Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption, SP-409

from

$2.49
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for optimal performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. They are resistant to oxidation and arc erosion, feature a multi-rib insulator to protect against misfire, and offer service intervals of up to 100,000 miles. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are an exact fit for Ford, Lincoln, and Mercury vehicles and are designed with high-quality materials to ensure reliable performance for almost any application. Motorcraft ignition components also help prevent false check engine lights, making them a dependable choice for both domestic and import cars and trucks of all makes and sizes.
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DENSO – DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT, 4713 (Part No.4713)

DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT, 4713

from

$15.49
Durability of an OE style plug combined with Power & Torque of high performance.
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Motorcraft – Motorcraft Double Platinum Spark Plug (ASF44P): Enhanced Durability & Reliability, SP-504 (Part No.SP-504)

Motorcraft Double Platinum Spark Plug (ASF44P): Enhanced Durability & Reliability, SP-504

from

$7.99
Double Platinum Spark Plug (ASF44P) offers enhanced durability and reliability, making it the ideal choice for maintaining peak performance in Ford, Lincoln, and Mercury vehicles. Engineered to meet strict Ford standards, these spark plugs are crafted with a platinum center electrode tip and nickel ground electrode tip for superior resistance to oxidation and arc erosion. The tapered seat design ensures an exact fit, while the multi-rib insulator minimizes misfires and optimizes emissions. With service intervals of up to 100,000 miles, these spark plugs deliver long-lasting performance and help reduce fuel consumption. Backed by Motorcraft’s Service Parts Warranty, they are designed to prevent false check engine lights and provide the same reliable performance as the original equipment installed during manufacturing. Perfect for domestic and import cars and trucks, Motorcraft spark plugs are built with high-quality materials to meet the demands of almost any application.
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Autolite – Autolite Platinum Spark Plug (AP5144): Improved Performance & Durability (Part No.AP5144)

Autolite Platinum Spark Plug (AP5144): Improved Performance & Durability

from

$5.49
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, better acceleration, and enhanced fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator provides excellent thermal conductivity and insulation for added strength. Designed with a long projection standard center electrode and a nickel-plated shell, these spark plugs resist corrosion and deliver extended durability. The multi-rib insulator prevents flash-over, ensuring reliable operation, and the tapered seat type offers a secure fit. With a performance-grade design and a nickel ground electrode tip, these spark plugs are built to meet the demands of high-performance engines while maintaining consistent reliability.
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NGK – NGK V-Power Nickel Spark Plug (TR55-1): Enhanced Ignitability & Performance, 2683 (Part No.2683)

NGK V-Power Nickel Spark Plug (TR55-1): Enhanced Ignitability & Performance, 2683

from

$5.99
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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DENSO – DENSO Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16, 5325 (Part No.5325)

DENSO Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT16, 5325

from

$13.99
Increased performance with World’s smallest Iridium Center Eletrode (0.4mm).
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 5144 (Part No.5144)

Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 5144

from

$4.49
Autolite Copper spark plugs are crafted to deliver reliable performance and durability, making them an excellent choice for quick starts and consistent power. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, ensuring smooth operation. The high nickel alloy center and ground electrodes are designed for extended life, while the long projection center electrode enhances ignition efficiency. Built with a high alumina multi-rib ceramic insulator, they offer superior thermal conductivity and insulation for added strength. The nickel-plated shell provides exceptional corrosion resistance, ensuring durability over extended use. With a tapered seat type and integrated resistor, these spark plugs are engineered to meet regular-grade performance Standards, making them a dependable solution for your vehicle’s ignition system.
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Autolite – Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP5144 (Part No.APP5144)

Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP5144

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, providing unmatched durability under high temperatures and pressure. The high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. With a long projection center electrode and tapered seat type, this performance-grade spark plug is built to handle demanding conditions. Both the center and ground electrode tips are crafted from platinum, ensuring consistent ignition and enhanced efficiency. Designed to deliver superior functionality and value, this spark plug is a durable solution for maintaining peak engine performance.
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DENSO – DENSO Platinum TT Spark Plug – PT16TT, 4511 (Part No.4511)

DENSO Platinum TT Spark Plug - PT16TT, 4511

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$6.99
The Platinum TT Spark Plug with its innovative Twin-Tip design ensures faster flame propagation, promoting more complete combustion for enhanced engine performance and efficiency. Crafted with a durable platinum center electrode tip, this spark plug offers exceptional longevity and consistent performance, making it a reliable choice for your vehicle. Its tapered seat type ensures a secure fit, reducing the risk of gas leakage and optimizing combustion chamber sealing. Designed for precision and durability, this spark plug not only improves ignition efficiency but also contributes to smoother engine operation and potentially better fuel economy. A perfect blend of advanced technology and robust materials, it delivers excellent value for drivers seeking long-lasting performance and reliability.
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Motorcraft – Motorcraft Double Platinum Spark Plug: Reduces Fuel Consumption & Misfires, SP-482 (Part No.SP-482)

Motorcraft Double Platinum Spark Plug: Reduces Fuel Consumption & Misfires, SP-482

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$5.49
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to enhance durability, eliminate misfires, reduce fuel consumption, and optimize emissions. With a platinum center and ground electrode tip, they are resistant to oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator protects against misfires, and they are backed by Motorcraft’s Service Parts Warranty. Designed for exact fit in Ford, Lincoln, and Mercury vehicles, these spark plugs also help prevent false check engine lights and offer service intervals of up to 100,000 miles. Crafted with high-quality materials, Motorcraft Spark Plugs provide reliable performance for a broad range of applications, including domestic and import cars and trucks of all makes and sizes.
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Autolite Iridium – Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP5144 (Part No.XP5144)

Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP5144

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$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 (AWSF44CA): Reliable Performance & Durability, SP-409-A (Part No.SP-409-A)

Motorcraft Standard Spark Plug (AWSF44CA): Reliable Performance & Durability, SP-409-A

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$5.29
Standard Spark Plug (AWSF44CA) 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. Resistant to oxidation and arc erosion, they are built with high-quality materials to withstand demanding conditions and provide 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, offering peace of mind and confidence in your vehicle’s performance. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are the same trusted components found in your vehicle at the time of manufacture, ensuring compatibility and reliability for a broad range of applications, including domestic and import cars and trucks.
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DENSO – DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PTJ16R15, 5077 (Part No.5077)

DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PTJ16R15, 5077

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$9.49
The Double Platinum Spark Plug is engineered to meet the highest OE standards for performance, durability, and emissions compliance. Featuring OE-grade platinum on both the center and ground electrodes, it ensures superior thermal conductivity and sustained spark performance for over 60,000 miles. Its premium shell construction with machine-rolled threads enhances durability and provides a secure fit, while the tapered seat type ensures optimal sealing. Designed to reduce secondary required voltage, this spark plug increases ignition efficiency, delivering reliable performance and reducing the likelihood of shop comebacks. With its double platinum design, it offers exceptional longevity and consistent ignition, making it a dependable choice for maintaining your vehicle’s peak performance.
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Motorcraft – Motorcraft Spark Plug: Enhanced Durability & Optimized Performance, SP-504-X (Part No.SP-504-X)

Motorcraft Spark Plug: Enhanced Durability & Optimized Performance, SP-504-X

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$8.99
Motorcraft Spark Plugs are expertly crafted to deliver enhanced durability, optimized performance, and unmatched reliability 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. The multi-rib insulator minimizes misfires, helping to reduce fuel consumption and optimize emissions. With service intervals of up to 100,000 miles, these spark plugs are built to last, providing consistent performance over time. As original equipment on Ford Motor Company vehicles, they are engineered to meet strict standards and eliminate false check engine lights. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are the exact fit for your vehicle, offering the same quality and reliability as when it was first manufactured. Whether for domestic or import cars and trucks, Motorcraft Spark Plugs are the trusted choice for dependable ignition performance.
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Motorcraft – Motorcraft Spark Plug: Enhanced Durability & Reliable Performance, SP-482-X (Part No.SP-482-X)

Motorcraft Spark Plug: Enhanced Durability & Reliable Performance, SP-482-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 unmatched convenience. As original equipment, Motorcraft Spark Plugs are crafted to meet strict Ford engineering standards, ensuring an exact fit and reliable performance for a wide range of domestic and import cars and trucks. Backed by Motorcraft’s Service Parts Warranty, these spark plugs help prevent false check engine lights, giving you confidence in your vehicle’s operation. Whether you’re maintaining your factory-installed components or upgrading for enhanced durability, Motorcraft Spark Plugs are built with high-quality materials to deliver consistent, dependable results.
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Motorcraft – Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-409-AX (Part No.SP-409-AX)

Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-409-AX

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$4.99
This spark plug is engineered for reliable ignition performance, featuring a standard center electrode design and durable nickel construction for both the center and ground electrode tips. The nickel material ensures excellent conductivity and resistance to wear, making it a dependable choice for maintaining consistent engine performance. Its tapered seat type provides a secure fit, enhancing the seal and preventing gas leakage for optimal combustion efficiency. Designed to deliver long-lasting durability and compatibility with a wide range of vehicles, this spark plug is an excellent value for drivers seeking dependable ignition and smooth engine operation.
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Champion – Champion Copper Plus Spark Plug (RS10LC): Dependable Performance & Durability, 403 (Part No.403)

Champion Copper Plus Spark Plug (RS10LC): Dependable Performance & Durability, 403

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$2.49
Copper Plus Spark Plug (RS10LC) 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 protection against corrosion, ensuring the spark plug remains resilient in harsh conditions. Additionally, the SAC-9 semiconductor resistor is designed to suppress EMI and RFI interference, contributing to smoother engine operation. 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 long-lasting reliability, this spark plug offers exceptional value and quality.
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Best-Selling 1990 Mercury Cougar Spark Plug Non-Fouler

Upgrade your Cougar with our best-selling Spark Plug Non-Fouler with a 5 Starts rating across 2 reviews.

Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 14mm Tapered Seat, 42008 (Part No.42008)

Dorman - Help Spark Plug Non-Foulers - 14mm Tapered Seat, 42008

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$10.49
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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Top-Rated Spark Plug Brands For Your 1990 Mercury Cougar

When it comes to finding the perfect Spark Plug for your 1990 Mercury Cougar, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 6 trusted brands. We carry the most popular Spark Plug brands including NGK, Autolite, and DENSO, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $4.49. Purchasing a Spark Plug from us here at Advance Auto Parts is a smart move for both you and your 1990 Mercury Cougar, providing peace of mind with parts that meet or exceed OEM standards.

Popular NGK 1990 Mercury Cougar Spark Plugs

If you’re looking for a top-quality Spark Plug for your 1990 Mercury Cougar, Advance Auto Parts has exactly what you need with our selection of NGK Spark Plugs. We have 3 NGK Spark Plugs in stock for this fitment, all known for their durability and precision fit. With prices starting at just $5.99 and an average cost of $10.66, you’ll find the perfect Spark Plug for your needs and budget. NGK Spark Plugs for the 1990 Mercury Cougar come highly rated, with over 365 customer reviews and an impressive average rating of 4.8 stars. Choosing a NGK Spark Plug from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
NGK Iridium IX Spark Plug (TR55-1IX): Enhanced Acceleration & Durability, 7316
from $16.99
(323)
NGK Iridium IX Spark Plug (TR55-1IX): Enhanced Acceleration & Durability, 7316
“OEM replacement. Excellent.”
NGK G-Power Platinum Spark Plug (TR55-1GP): Enhanced Durability & Efficiency, 7159
from $8.99
(12)
NGK G-Power Platinum Spark Plug (TR55-1GP): Enhanced Durability & Efficiency, 7159
“Wanting to review different items but no matter what I choose this site always goes back to the spark plugs! Already reviewed them smh.”

Top-Quality Autolite 1990 Mercury Cougar Spark Plugs

For those in search of a high-quality Spark Plug for their 1990 Mercury Cougar, Advance Auto Parts offers a great selection of Autolite Spark Plugs. With 3 Autolite Spark Plugs in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Spark Plugs start at just $4.49, with an average price of $4.99, giving you a range of options to suit your budget. Backed by over 33 customer ratings and an average rating of 4.6 stars, Autolite Spark Plugs provide both reliability and excellent performance. Choosing a Autolite Spark Plug from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 2545
from $4.49
(6)
Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 2545
“great plugs at this pricepoint”
Autolite Platinum Spark Plug (AP5144): Improved Performance & Durability
from $5.49
(23)
Autolite Platinum Spark Plug (AP5144): Improved Performance & Durability
“These plugs were easy to install and pregapped so saved time”

FAQs for 1990 Mercury Cougar Spark Plugs

What are the best-selling Spark Plugs for 1990 Mercury Cougars?

What’s the price range for 1990 Mercury Cougar Spark Plugs?

The prices of Spark Plugs for the 1990 Mercury Cougar range from $1.25 up to $16.99 for the most premium parts.

What is the average price of a Spark Plug for a 1990 Mercury Cougar?

The average price for Spark Plugs for the 1990 Mercury Cougar is $8.85. Keep in mind the variety of part types within our Spark Plug category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Spark Plugs for other Mercury Cougar model years?

Yes, we carry Spark Plugs for 33 model years of Mercury Cougars between 1967 and 2002. The following model years are the most popular for Spark Plug purchases: 2002, 2001, 2000, 1999, 1997, 1996, 1995, 1994, and 1993.

Does Advance Auto Parts sell Spark Plugs for any other 1990 Mercury models?

Yes. We stock Spark Plugs for 3 other popular 1990 Mercury models. Some of the most popular are 1990 Grand Marquis Spark Plugs, 1990 Colony Park Spark Plugs, 1990 Sable Spark Plugs, and 1990 Topaz Spark Plugs.

What are the top-rated Spark Plugs that fit the 1990 Mercury Cougar?

Based on 1,170 reviews by customers, our 1990 Mercury Cougar Spark Plugs have an average customer rating of 4.7 stars. These are the highest-rated categories of Spark Plugs for the 1990 Mercury Cougar and their top-rated products:

What types of Spark Plugs do you sell for my 1990 Mercury Cougar?

As of 8/2/26, these are some of the most in-demand types of Spark Plugs for a 1990 Mercury Cougar:

Can I get help with 1990 Mercury Cougar Spark Plug orders?

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

What is your return policy for Mercury Cougar Spark Plugs?

Advance Auto Parts keeps returns simple. For new Mercury Cougar Spark Plugs and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.