1978 Mercury Bobcat Spark Plugs

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Keep Your 1978 Mercury Bobcat 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 1978 Mercury Bobcat looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Spark Plug Non-Foulers and Spark Plugs. 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 Autolite, Champion, and NGK. For example, Autolite Spark Plugs start at just $4.49 with an average 4.6 star rating. Champion and NGK offer similar pricing and quality, backed by strong customer feedback. With over 1,834 reviews and a solid 4.5 star average, you can shop with confidence knowing other Mercury Bobcat owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Mercury Bobcat Spark Plug at Advance Auto Parts is around $8.34, with a range that starts at $2.99 and goes up to $21.99. With 26 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.54, DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT16TT, 4713, and Motorcraft Double Platinum Spark Plug: Enhances Durability & Reduces Misfires, SP-486 start at just $7.29 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 Ignition Boots and Ignition Coils and Boots. At Advance Auto Parts, we’re here to help you keep your 1978 Mercury Bobcat in peak condition, inside and out.

Essential 1978 Mercury Bobcat Spark Plugs

Champion – Champion Iridium Spark Plug RS14WYPB5 – Maximum Performance & Longevity, 9404 (Part No.9404)

Champion Iridium Spark Plug RS14WYPB5 - Maximum Performance & Longevity, 9404

from

$11.49
Champion Iridium spark plugs combine a fine-wire iridium center with platinum ground electrodes to help any engine achieve top performance, regardless of ignition type. This advanced design ensures precise ignition, long-lasting durability and reliable performance mile after mile, while reducing wear and tear. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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Autolite – Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP105 (Part No.APP105)

Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP105

from

$7.49
Double Platinum Spark Plug: Enhanced Durability & Performance is engineered for exceptional reliability and efficiency, featuring a platinum-to-platinum design that minimizes gap erosion and extends the spark plug’s lifespan. Ideal for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs by reducing misfires and delivering consistent performance. The yttrium-enhanced ground electrode ensures superior heat transfer, making it highly durable under extreme temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for added safety. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is designed to meet the demands of modern engines. Both the center and ground electrode tips are crafted from platinum, ensuring long-lasting functionality and reliability. Perfect for drivers seeking enhanced durability and superior ignition performance, this spark plug is a valuable upgrade for maintaining engine efficiency.
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Motorcraft – Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-419-X (Part No.SP-419-X)

Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-419-X

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$5.79
The Spark Plug with a reliable ignition design features a standard center electrode crafted from durable nickel, ensuring consistent performance and longevity. Its ground electrode tip is also made of nickel, providing excellent conductivity and resistance to wear. Designed with a tapered seat type, this spark plug ensures a secure fit and optimal sealing, reducing the risk of combustion leaks. Built to deliver dependable ignition, it is an ideal choice for maintaining engine efficiency and smooth operation. Whether you’re replacing a worn-out spark plug or upgrading for better performance, this nickel electrode design offers exceptional value and reliability for your vehicle.
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E3 – DiamondFire Spark Plug (E3.46): Enhanced Power & Fuel Efficiency (Part No.E3.46)

DiamondFire Spark Plug (E3.46): Enhanced Power & Fuel Efficiency

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$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. E3.46 is a 14mm, 0.750 reach plug with a gasket seat. It fits a wide variety of applications from the 60s to early 90s, especially import. E3.46 is widely stocked in automotive retail stores. 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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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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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 106 (Part No.106)

Autolite Copper Resistor Spark Plug: Quick Starts & Reliable Performance, 106

from

$4.79
Autolite Copper spark plugs are designed to provide reliable performance and quick starts, making them an essential upgrade 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 enhance durability, while the high alumina multi-rib ceramic insulator boosts thermal conductivity and insulation strength. With a corrosion-resistant nickel-plated shell, these spark plugs are built to last, even under demanding conditions. Their design optimizes fuel economy, helping you achieve better mileage, and ensures smooth, responsive acceleration for an improved driving experience. Compliant with Original Equipment Service (OES) Standards, they deliver dependable performance and a secure fit with their tapered seat type. Equipped with a mid-projection standard center electrode and nickel tip materials, these spark plugs are a reliable choice for maintaining your vehicle’s efficiency and power.
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DENSO – DENSO Platinum TT Spark Plug – PT16TT, 4511 (Part No.4511)

DENSO Platinum TT Spark Plug - PT16TT, 4511

from

$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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NGK – NGK Iridium IX Spark Plug (TR5IX): Extreme Ignitability & Durability, 7397 (Part No.7397)

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

from

$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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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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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

from

$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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NGK – NGK Standard Nickel Spark Plug (BPR4ES): Reliable OE Performance, 6578 (Part No.6578)

NGK Standard Nickel Spark Plug (BPR4ES): Reliable OE Performance, 6578

from

$6.49
NGK Standard spark plugs (in the iconic NGK ‘yellow box’ packaging) are a proven OE cornerstone and technology customers have relied on for decades. Engineered specifically for OE applications, NGK Standard spark plugs provide OE quality nickel alloy reliable performance and design. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance, while triple gasket sealing prevents combustion gas leakage. Solid 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
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NGK – NGK Iridium IX Spark Plug (GR4IX): Extreme Ignitability & Durability, 97382 (Part No.97382)

NGK Iridium IX Spark Plug (GR4IX): Extreme Ignitability & Durability, 97382

from

$13.99
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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NGK – NGK G-Power Platinum Spark Plug (GR4GP): Enhanced Durability & Efficiency, 2763 (Part No.2763)

NGK G-Power Platinum Spark Plug (GR4GP): Enhanced Durability & Efficiency, 2763

from

$6.99
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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Autolite – Autolite Platinum Spark Plug (AP106): Enhanced Durability & Performance (Part No.AP106)

Autolite Platinum Spark Plug (AP106): Enhanced Durability & Performance

from

$4.99
The Platinum Spark Plug (AP106) is expertly crafted to deliver enhanced durability and performance for older engine applications. Featuring a platinum center electrode firing tip, it ensures quicker firing, smoother starts, and improved fuel efficiency while preventing gap erosion for a longer service life. Its high alumina ceramic insulator provides superior thermal conductivity and insulation, boosting strength and reliability under demanding conditions. The multi-rib insulator design effectively prevents flash-over, while the nickel-plated shell offers exceptional corrosion resistance, extending the plug’s lifespan. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is built to optimize engine functionality. The combination of platinum and nickel materials ensures consistent ignition and durability, making it a dependable choice for drivers seeking improved acceleration and long-term value.
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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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Most Popular Spark Plug Non-Fouler for 1978 Mercury Bobcats

Enhance your 1978 Mercury Bobcat with this popular Spark Plug Non-Fouler we have in stock, for $10.49.

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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Best-Selling 1978 Mercury Bobcat Spark Plugs

Upgrade your Bobcat with one of our 25 best-selling Spark Plugs, earning an average 4.47 stars rating across 915 reviews.

Motorcraft – Motorcraft Double Platinum Spark Plug: Enhances Durability & Reduces Misfires, SP-486 (Part No.SP-486)

Motorcraft Double Platinum Spark Plug: Enhances Durability & Reduces Misfires, SP-486

from

$7.29
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. 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 misfire, and they are backed by Motorcraft’s Service Parts Warranty. Designed for exact fit in Ford, Lincoln, and Mercury vehicles, they also help prevent false check engine lights. With service intervals of up to 100,000 miles, Motorcraft Spark Plugs are crafted from high-quality materials to deliver reliable performance for almost any application, making them the same components that were in the vehicle when it was manufactured.
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Autolite – Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP105 (Part No.AP105)

Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP105

from

$5.49
Autolite Platinum spark plugs are crafted for exceptional 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, and enhanced acceleration while improving fuel efficiency. The platinum firing tip resists gap erosion, extending the service life, while the high alumina ceramic insulator provides superior thermal conductivity and insulation for added strength. A multi-rib insulator prevents flash-over, ensuring reliable operation, and the nickel-plated shell offers corrosion resistance for long-lasting durability. Designed with a tapered seat type, these spark plugs enhance performance and longevity, delivering consistent results. With a mid-projection standard center electrode and nickel ground electrode tip, this performance-grade spark plug is built to meet demanding engine needs. Whether you’re seeking reliability or improved efficiency, Autolite Platinum spark plugs are a smart investment for maintaining peak engine performance.
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Champion – Champion Copper Plus Spark Plug RS14YC – Dependable Performance & Durability, 408 (Part No.408)

Champion Copper Plus Spark Plug RS14YC - Dependable Performance & Durability, 408

from

$3.29
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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Autolite – Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP105 (Part No.APP105)

Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP105

from

$7.49
Double Platinum Spark Plug: Enhanced Durability & Performance is engineered for exceptional reliability and efficiency, featuring a platinum-to-platinum design that minimizes gap erosion and extends the spark plug’s lifespan. Ideal for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs by reducing misfires and delivering consistent performance. The yttrium-enhanced ground electrode ensures superior heat transfer, making it highly durable under extreme temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for added safety. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is designed to meet the demands of modern engines. Both the center and ground electrode tips are crafted from platinum, ensuring long-lasting functionality and reliability. Perfect for drivers seeking enhanced durability and superior ignition performance, this spark plug is a valuable upgrade for maintaining engine efficiency.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration, 765 (Part No.765)

Autolite Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration, 765

from

$4.49
Autolite Copper spark plugs are expertly crafted to provide reliable performance and meet the demands of 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. A nickel-plated shell offers superior corrosion resistance, boosting durability over time. Engineered for quick starts and smooth acceleration, these spark plugs enhance your driving experience while optimizing fuel efficiency to help you save at the pump. The tapered seat type design further improves performance, ensuring reliable and efficient operation. With a mid-projection standard center electrode and nickel tip materials, these regular-grade spark plugs deliver dependable functionality for a wide range of applications.
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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 Iridium Spark Plug RS14WYPB5 – Maximum Performance & Longevity, 9404 (Part No.9404)

Champion Iridium Spark Plug RS14WYPB5 - Maximum Performance & Longevity, 9404

from

$11.49
Champion Iridium spark plugs combine a fine-wire iridium center with platinum ground electrodes to help any engine achieve top performance, regardless of ignition type. This advanced design ensures precise ignition, long-lasting durability and reliable performance mile after mile, while reducing wear and tear. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
See More

NGK – NGK V-Power Nickel Spark Plug (TR5): Enhanced Ignitability & Reliability, 2238 (Part No.2238)

NGK V-Power Nickel Spark Plug (TR5): Enhanced Ignitability & Reliability, 2238

from

$6.49
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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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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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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NGK – NGK Iridium IX Spark Plug (TR5IX): Extreme Ignitability & Durability, 7397 (Part No.7397)

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

from

$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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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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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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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

from

$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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DENSO – DENSO Platinum TT Spark Plug – PT16TT, 4511 (Part No.4511)

DENSO Platinum TT Spark Plug - PT16TT, 4511

from

$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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ACDelco – ACDelco Professional Double Platinum Spark Plug: Enhanced Durability & Performance, 41-963 (Part No.41-963)

ACDelco Professional Double Platinum Spark Plug: Enhanced Durability & Performance, 41-963

from

$6.49
“ACDelco is a global leader in automotive replacement parts and related services and offers quality aftermarket products for most makes and models, including General Motors, Ford, Chrysler, Toyota and Honda, plus many original equipment service replacement parts. ACDelco products can be found in more than 100 countries located on six of the seven continents and are sourced globally to meet the needs of the local markets, including “”maintenance”” parts commonly replaced during the lifetime of a vehicle (e.g., batteries, oil filters, air filters, wiper blades, shocks and brakes), as well as “”repair”” parts (e.g., alternators, radiators, chassis and heating/cooling components). ACDelco offers more than 80,000 parts across 37 product lines. ACDelco has over 100 years of experience in the automotive industry and is a brand of GM Customer Care and Aftersales, a division of General Motors. ACDelco employs a two- or three-tiered distribution model, utilizing a network of appointed wholesale distributors to service independent installers, ACDelco independent service centers, retail and fleet customers.”
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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

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 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 Spark Plug: 30,000-Mile Interval & RFI Reduction, SP-419 (Part No.SP-419)

Motorcraft Spark Plug: 30,000-Mile Interval & RFI Reduction, SP-419

from

$2.99
Motorcraft Spark Plug with 30,000-Mile Interval and RFI Reduction is designed, engineered, and recommended by Ford Motor Company. This spark plug is the same part installed when the engine rolled off the assembly line, ensuring OEM quality. It features a copper core electrode and a nickel chromium alloy side electrode for excellent heat dissipation and durability. The resistor reduces radio frequency interference (RFI) and electrode erosion, while the copper-glass seal bonds the insulator and terminal post center electrode together, ensuring full required voltage at the spark gap and a gas-tight seal. With a 30,000-mile service interval and a tapered seat type, this spark plug offers reliable performance and longevity.
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ACDelco – ACDelco Double Platinum Spark Plug, 41-950 (Part No.41-950)

ACDelco Double Platinum Spark Plug, 41-950

from

$11.49
ACDelco GM Original Equipment Double Platinum Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. ACDelco GM Original Equipment parts are the true OE parts installed during the production 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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Motorcraft – Motorcraft Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption, SP-419-A (Part No.SP-419-A)

Motorcraft Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption, SP-419-A

from

$4.49
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 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 have 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 provide reliable performance for almost any application. Motorcraft ignition components also help prevent false check engine lights, ensuring your vehicle runs smoothly.
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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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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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Motorcraft – Motorcraft Spark Plug: Fine Wire Design for Enhanced Ignition Efficiency, SP-486-X (Part No.SP-486-X)

Motorcraft Spark Plug: Fine Wire Design for Enhanced Ignition Efficiency, SP-486-X

from

$7.99
The fine wire design of this spark plug ensures enhanced ignition efficiency, delivering reliable performance for your engine. Featuring a platinum center electrode tip, it offers superior durability and consistent spark generation, while the nickel ground electrode tip adds to its robust construction. The tapered seat type ensures a secure fit, reducing the risk of gas leakage and optimizing combustion. This spark plug is engineered to provide long-lasting performance, making it a cost-effective choice for maintaining your vehicle’s ignition system. Whether you’re looking to improve fuel efficiency or ensure smooth engine operation, this high-quality spark plug is designed to meet your needs with precision and reliability.
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Motorcraft – Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-419-X (Part No.SP-419-X)

Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-419-X

from

$5.79
The Spark Plug with a reliable ignition design features a standard center electrode crafted from durable nickel, ensuring consistent performance and longevity. Its ground electrode tip is also made of nickel, providing excellent conductivity and resistance to wear. Designed with a tapered seat type, this spark plug ensures a secure fit and optimal sealing, reducing the risk of combustion leaks. Built to deliver dependable ignition, it is an ideal choice for maintaining engine efficiency and smooth operation. Whether you’re replacing a worn-out spark plug or upgrading for better performance, this nickel electrode design offers exceptional value and reliability for your vehicle.
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Champion – Champion Double Platinum Spark Plug (RS14PYPB): Powerful Performance & Durability, 7408 (Part No.7408)

Champion Double Platinum Spark Plug (RS14PYPB): Powerful Performance & Durability, 7408

from

$5.29
The Double Platinum Spark Plug is engineered for drivers seeking enhanced performance and durability. Featuring Champion’s Double Platinum Power technology, this premium spark plug is designed to deliver more powerful performance with exceptional wear resistance. Its platinum fine-wire center electrode and platinum pad ground electrode ensure greater ignitability and a sharper spark focus, promoting efficient combustion and improved engine response. The V-trimmed ground electrode further enhances spark precision, while the exclusive Heat-Active alloy maintains stable operating temperatures under all engine loads, ensuring consistent performance and longevity. Ideal for those who demand reliability and peak performance, this spark plug is built to withstand the rigors of daily driving while maximizing engine efficiency.
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Top-Rated Spark Plug Brands For Your 1978 Mercury Bobcat

When it comes to finding the perfect Spark Plug for your 1978 Mercury Bobcat, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Spark Plug brands including Champion, NGK, and Autolite, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $3.29. Purchasing a Spark Plug from us here at Advance Auto Parts is a smart move for both you and your 1978 Mercury Bobcat, providing peace of mind with parts that meet or exceed OEM standards.

Popular Champion 1978 Mercury Bobcat Spark Plugs

If you’re looking for a top-quality Spark Plug for your 1978 Mercury Bobcat, Advance Auto Parts has exactly what you need with our selection of Champion Spark Plugs. We have 3 Champion Spark Plugs in stock for this fitment, all known for their durability and precision fit. With prices starting at just $3.29 and an average cost of $7.89, you’ll find the perfect Spark Plug for your needs and budget. Champion Spark Plugs for the 1978 Mercury Bobcat come highly rated, with over 7 customer reviews and an impressive average rating of 4.8 stars. Choosing a Champion Spark Plug from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Champion Double Platinum Power Spark Plug RS14PYPB5 - Enhanced Durability & Performance, 7940
from $8.89
(4)
Champion Double Platinum Power Spark Plug RS14PYPB5 – Enhanced Durability & Performance, 7940
“Good people, good parts, good price, good times!”
Champion Iridium Spark Plug RS14WYPB5 - Maximum Performance & Longevity, 9404
from $11.49
(2)
Champion Iridium Spark Plug RS14WYPB5 – Maximum Performance & Longevity, 9404
“These plugs are the best and If you gap them right you will notice improvement in everything. Be sure on all plug that are Iridium do not gap the plug”

Top-Quality NGK 1978 Mercury Bobcat Spark Plugs

For those in search of a high-quality Spark Plug for their 1978 Mercury Bobcat, Advance Auto Parts offers a great selection of NGK Spark Plugs. With 3 NGK 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 $6.49, with an average price of $12.49, giving you a range of options to suit your budget. Backed by over 346 customer ratings and an average rating of 4.8 stars, NGK Spark Plugs provide both reliability and excellent performance. Choosing a NGK Spark Plug from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

FAQs for 1978 Mercury Bobcat Spark Plugs

What are the best-selling Spark Plugs for 1978 Mercury Bobcats?

What’s the price range for 1978 Mercury Bobcat Spark Plugs?

The prices of Spark Plugs for the 1978 Mercury Bobcat range from $2.99 up to $21.99 for the most premium parts.

What is the average price of a Spark Plug for a 1978 Mercury Bobcat?

The average price for Spark Plugs for the 1978 Mercury Bobcat is $8.34. 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 Bobcat model years?

Yes, we carry Spark Plugs for 4 model years of Mercury Bobcats between 1975 and 1980. The following model years are the most popular for Spark Plug purchases: 1980, 1979, 1977, 1976, and 1975.

Does Advance Auto Parts sell Spark Plugs for any other 1978 Mercury models?

Yes. We stock Spark Plugs for 4 other popular 1978 Mercury models. Some of the most popular are 1978 Cougar Spark Plugs, 1978 Grand Marquis Spark Plugs, 1978 Zephyr Spark Plugs, 1978 Marquis Spark Plugs, and 1978 Monarch Spark Plugs.

What are the top-rated Spark Plugs that fit the 1978 Mercury Bobcat?

Based on 1,834 reviews by customers, our 1978 Mercury Bobcat Spark Plugs have an average customer rating of 4.5 stars. These are the highest-rated categories of Spark Plugs for the 1978 Mercury Bobcat and their top-rated products:

What types of Spark Plugs do you sell for my 1978 Mercury Bobcat?

As of 8/2/26, these are some of the most in-demand types of Spark Plugs for a 1978 Mercury Bobcat:

Can I get help with 1978 Mercury Bobcat 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 Bobcat Spark Plugs?

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