1966 Buick Skylark Spark Plugs

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Keep Your 1966 Buick Skylark 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 1966 Buick Skylark 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 NGK, Autolite, and ACDelco. For example, NGK Spark Plugs start at just $6.99 with an average 4.8 star rating. Autolite and ACDelco offer similar pricing and quality, backed by strong customer feedback. With over 234 reviews and a solid 4.8 star average, you can shop with confidence knowing other Buick Skylark owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Buick Skylark Spark Plug at Advance Auto Parts is around $14.52, with a range that starts at $4.49 and goes up to $55.19. With 14 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like ACDelco Conventional Spark Plug, R43S, E3 DiamondFIRE Spark Plug: More Power & Fuel Efficiency, E3.52, and NGK V-Power Nickel Spark Plug (XR5): Enhanced Ignitability & Performance, 3332 start at just $6.49 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 Ignition Boots and Ignition Coils and Boots. At Advance Auto Parts, we’re here to help you keep your 1966 Buick Skylark in peak condition, inside and out.

Essential 1966 Buick Skylark Spark Plugs

Accel – Accel HP Copper Spark Plug – Shorty – 14mm Thread – .460 in Reach – Tapered Seat – 4 Pack, 0574S-4 (Part No.0574S-4)

Accel HP Copper Spark Plug - Shorty - 14mm Thread - .460 in Reach - Tapered Seat - 4 Pack, 0574S-4

from

$49.99
ACCEL’s patented race proven spark plugs in a Shorty configuration. The overall length has been reduced 3/16 in to 3/8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. This helps eliminate burning the spark plug boot or dimpling the header tube. The shorter spark plug length also can make it easier to install an remove the spark plugs in certain applications where there is not a lot of room to fit a socket or move a wrench around. ACCEL Shorty 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 Shorty 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 Shorty Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.
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ACDelco – ACDelco Conventional Spark Plug, 41-601 (Part No.41-601)

ACDelco Conventional Spark Plug, 41-601

from

$6.49
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 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 Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.
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Motorcraft – Motorcraft Standard Spark Plug (AGSF32CA): Reliable Performance & Durability, SP-447-A (Part No.SP-447-A)

Motorcraft Standard Spark Plug (AGSF32CA): Reliable Performance & Durability, SP-447-A

from

$4.99
Standard Spark Plug (AGSF32CA) delivers reliable performance and durability, making it the ideal choice for maintaining your vehicle’s original equipment standards. Specifically engineered for Ford, Lincoln, and Mercury vehicles, these spark plugs ensure an exact fit while enhancing engine durability, reducing misfires, optimizing emissions, and improving fuel efficiency. Built with high-quality materials, they resist oxidation and arc erosion, ensuring long-lasting performance with service intervals of up to 100,000 miles. The multi-rib insulator design protects against misfires, while Motorcraft ignition components help prevent false check engine lights, giving you confidence in your vehicle’s operation. Backed by Motorcraft’s Service Parts Warranty, these spark plugs are the same trusted components found in your vehicle at the time of manufacture, offering unmatched reliability for a broad range of domestic and import cars and trucks. Whether you’re maintaining or upgrading, these spark plugs deliver the performance and dependability you need.
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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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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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ACDelco – ACDelco Spark Plug: Reliable Ignition & Long-Lasting Performance, R45T (Part No.R45T)

ACDelco Spark Plug: Reliable Ignition & Long-Lasting Performance, R45T

from

$2.49
“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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ACDelco – ACDelco Double Platinum Spark Plug, 41-817 (Part No.41-817)

ACDelco Double Platinum Spark Plug, 41-817

from

$11.99
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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Champion – Champion Double Platinum Power Spark Plug RV17PMP4 – Enhanced Durability & Performance, 7018 (Part No.7018)

Champion Double Platinum Power Spark Plug RV17PMP4 - Enhanced Durability & Performance, 7018

from

$7.49
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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Autolite – Autolite Platinum Spark Plug (AP605): Enhanced Durability & Performance (Part No.AP605)

Autolite Platinum Spark Plug (AP605): Enhanced Durability & Performance

from

$5.49
The Platinum Spark Plug (AP605) 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 standard center electrode and a tapered seat type, this performance-grade spark plug is built to optimize engine functionality. The combination of platinum and nickel materials in the electrode tips ensures consistent performance and durability, making it a dependable choice for maintaining acceleration and overall engine efficiency.
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ACDelco – ACDelco Copper Core Spark Plug: Reliable Performance & Durability, R43TS (Part No.R43TS)

ACDelco Copper Core Spark Plug: Reliable Performance & Durability, R43TS

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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NGK – NGK G-Power Platinum Spark Plug (TR55GP): Enhanced Durability & Efficiency, 3403 (Part No.3403)

NGK G-Power Platinum Spark Plug (TR55GP): Enhanced Durability & Efficiency, 3403

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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Motorcraft – Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-447-X (Part No.SP-447-X)

Motorcraft Spark Plug: Reliable Ignition with Nickel Electrode Design, SP-447-X

from

$5.29
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 overall efficiency of the ignition system. Designed to deliver long-lasting durability and optimal functionality, this spark plug is a cost-effective solution for keeping your vehicle running smoothly. Whether you’re replacing a worn-out plug or performing routine maintenance, this high-quality component ensures dependable starts and efficient combustion.
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ACDelco – ACDelco Conventional Spark Plug, 41-627 (Part No.41-627)

ACDelco Conventional Spark Plug, 41-627

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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ACDelco – ACDelco RAPIDFIRE Spark Plug, 6 (Part No.6)

ACDelco RAPIDFIRE Spark Plug, 6

from

$7.99
ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.
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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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Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 14mm Gasket Seat, 42000 (Part No.42000)

Dorman - Help Spark Plug Non-Foulers - 14mm Gasket Seat, 42000

from

$7.99
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.
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Most Popular Spark Plug Non-Fouler for 1966 Buick Skylarks

Enhance your 1966 Buick Skylark with this popular Spark Plug Non-Fouler we have in stock, for $7.99.

Dorman – Help – Dorman – Help Spark Plug Non-Foulers – 14mm Gasket Seat, 42000 (Part No.42000)

Dorman - Help Spark Plug Non-Foulers - 14mm Gasket Seat, 42000

from

$7.99
This spark plug non fouler is designed for easy installation on specified vehicles to protect spark plugs from fouling and damage. It is engineered for durability and reliable performance.
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Best-Selling 1966 Buick Skylark Spark Plugs

Upgrade your Skylark with one of our 13 best-selling Spark Plugs, earning an average 4.78 stars rating across 65 reviews.

E3 – E3 DiamondFIRE Spark Plug: More Power & Fuel Efficiency, E3.52 (Part No.E3.52)

E3 DiamondFIRE Spark Plug: More Power & Fuel Efficiency, E3.52

from

$8.49
“The Premium DiamondFire Automotive Spark Plug is engineered to deliver exceptional 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 – up to 6% on average – and better fuel efficiency, saving you money while reducing engine carbon deposits. Constructed with durable nickel center and ground electrode tips, this spark plug is built to last. Its gasket seat type ensures a secure fit, and the pre-gapped design eliminates the need for adjustments, making installation hassle-free. With its advanced technology, this spark plug not only boosts engine performance but also contributes to a cleaner, more efficient combustion process.”
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NGK – NGK V-Power Nickel Spark Plug (XR5): Enhanced Ignitability & Performance, 3332 (Part No.3332)

NGK V-Power Nickel Spark Plug (XR5): Enhanced Ignitability & Performance, 3332

from

$6.99
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
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Autolite – Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP85 (Part No.AP85)

Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP85

from

$4.99
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine designs. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, and enhanced acceleration while boosting fuel efficiency. The platinum firing tip resists gap erosion, extending service life, while the high alumina ceramic insulator provides excellent thermal conductivity and insulation for added strength. A multi-rib insulator prevents flash-over, and the nickel-plated shell offers corrosion resistance for long-lasting durability. Designed with a flat gasket seat type, these spark plugs ensure a secure fit and optimal performance. With a mid-projection standard center electrode and nickel ground electrode tip, they deliver reliable ignition and consistent performance. Perfect for those seeking a performance-grade solution, Autolite Platinum spark plugs combine advanced materials and engineering to deliver value and dependability for your vehicle.
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NGK – NGK V-Power Nickel Spark Plug (XR4): Enhanced Ignitability & Reliability, 5858 (Part No.5858)

NGK V-Power Nickel Spark Plug (XR4): Enhanced Ignitability & Reliability, 5858

from

$6.99
NGK V-Power spark plugs offer reliable performance and improved ignitability over standard nickel plugs. Engineered specifically for OE applications, the special V-cut nickel alloy center electrode and concave ground electrode of NGK’s V-Power spark plug increases ignitability providing quicker starts and smoother idle. NGK’s legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
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NGK – NGK Iridium IX Spark Plug (XR5IX): Extreme Ignitability & Durability, 7355 (Part No.7355)

NGK Iridium IX Spark Plug (XR5IX): Extreme Ignitability & Durability, 7355

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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ACDelco – ACDelco Conventional Spark Plug, R43S (Part No.R43S)

ACDelco Conventional Spark Plug, R43S

from

$6.49
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 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 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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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 85 (Part No.85)

Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 85

from

$4.49
Autolite Copper spark plugs are expertly crafted to ensure reliable performance and long-lasting durability for your vehicle. Featuring a copper core center electrode, these 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 provides superior insulation for added strength. With a nickel-plated shell, these spark plugs resist corrosion, making them ideal for long-term use. The mid-projection center electrode and flat seat type ensure a precise fit, while the resistor design minimizes electrical interference. Optimized for good fuel economy, these spark plugs help you maximize mileage and efficiency. Built with regular-grade materials and nickel-tipped electrodes, they deliver dependable performance and quick starts, meeting the demands of your vehicle or application.
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ACDelco – ACDelco RAPIDFIRE Spark Plug, 7 (Part No.7)

ACDelco RAPIDFIRE Spark Plug, 7

from

$6.99
ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.
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Accel – Accel HP Copper Spark Plug – Shorty – 14mm Thread – .375 in Reach – Gasket Seat – 8 Pack of 0437S, 8197 (Part No.8197)

Accel HP Copper Spark Plug - Shorty - 14mm Thread - .375 in Reach - Gasket Seat - 8 Pack of 0437S, 8197

from

$55.19
ACCEL’s patented race proven spark plugs in a Shorty configuration. The overall length has been reduced 3/16 in to 3/8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. This helps eliminate burning the spark plug boot or dimpling the header tube. The shorter spark plug length also can make it easier to install an remove the spark plugs in certain applications where there is not a lot of room to fit a socket or move a wrench around. ACCEL Shorty 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 Shorty 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 Shorty Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.
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Champion – Champion Copper Plus Spark Plug RJ12YC – Dependable Performance & Durability, 14 (Part No.14)

Champion Copper Plus Spark Plug RJ12YC - Dependable Performance & Durability, 14

from

$4.89
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.
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ACDelco – ACDelco Double Platinum Spark Plug, 41-833 (Part No.41-833)

ACDelco Double Platinum Spark Plug, 41-833

from

$11.99
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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Champion – Champion Copper Plus Small Engine Spark Plug J12YC – Dependable Performance & Durability, 10 (Part No.10)

Champion Copper Plus Small Engine Spark Plug J12YC - Dependable Performance & Durability, 10

from

$4.49
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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Accel – Accel HP Copper Spark Plug – Shorty – 14mm Thread, .750 in Reach – Gasket (flat) Seat – 4-Pack, 0416S-4 (Part No.0416S-4)

Accel HP Copper Spark Plug - Shorty - 14mm Thread, .750 in Reach - Gasket (flat) Seat - 4-Pack, 0416S-4

from

$49.99
ACCEL’s patented race proven spark plugs in a Shorty configuration. The overall length has been reduced 3/16 in to 3/8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. This helps eliminate burning the spark plug boot or dimpling the header tube. The shorter spark plug length also can make it easier to install an remove the spark plugs in certain applications where there is not a lot of room to fit a socket or move a wrench around. ACCEL Shorty 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 Shorty 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 Shorty Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.
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Top-Rated Spark Plug Brands For Your 1966 Buick Skylark

When it comes to finding the perfect Spark Plug for your 1966 Buick Skylark, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 trusted brands. We carry the most popular Spark Plug brands including NGK, ACDelco, and Autolite, 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 1966 Buick Skylark, providing peace of mind with parts that meet or exceed OEM standards.

Popular NGK 1966 Buick Skylark Spark Plugs

If you’re looking for a top-quality Spark Plug for your 1966 Buick Skylark, 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 $6.99 and an average cost of $10.32, you’ll find the perfect Spark Plug for your needs and budget. NGK Spark Plugs for the 1966 Buick Skylark come highly rated, with over 15 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 (XR5IX): Extreme Ignitability & Durability, 7355
from $16.99
(1)
NGK Iridium IX Spark Plug (XR5IX): Extreme Ignitability & Durability, 7355
“This is a high quality product”
NGK V-Power Nickel Spark Plug (XR5): Enhanced Ignitability & Performance, 3332
from $6.99
(9)
NGK V-Power Nickel Spark Plug (XR5): Enhanced Ignitability & Performance, 3332
“Yes they make the zap.zap when piston comes up to.compress fuel.and air”

Top-Quality ACDelco 1966 Buick Skylark Spark Plugs

For those in search of a high-quality Spark Plug for their 1966 Buick Skylark, Advance Auto Parts offers a great selection of ACDelco Spark Plugs. With 2 ACDelco 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 $6.74, giving you a range of options to suit your budget. Backed by over 17 customer ratings and an average rating of 4.7 stars, ACDelco Spark Plugs provide both reliability and excellent performance. Choosing a ACDelco Spark Plug from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
ACDelco Conventional Spark Plug, R43S
from $6.49
(13)
ACDelco Conventional Spark Plug, R43S
“Great for my old V 8”
ACDelco RAPIDFIRE Spark Plug, 7
from $6.99
(4)
ACDelco RAPIDFIRE Spark Plug, 7
“Going to use these plugs in my 67 Chevy II for better performance.”

FAQs for 1966 Buick Skylark Spark Plugs

What are the best-selling Spark Plugs for 1966 Buick Skylarks?

Out of 14 Spark Plugs that fit 1966 Buick Skylarks, the following parts are the top sellers:

What’s the price range for 1966 Buick Skylark Spark Plugs?

The prices of Spark Plugs for the 1966 Buick Skylark range from $4.49 up to $55.19 for the most premium parts.

What is the average price of a Spark Plug for a 1966 Buick Skylark?

The average price for Spark Plugs for the 1966 Buick Skylark is $14.52. 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 Buick Skylark model years?

Yes, we carry Spark Plugs for 35 model years of Buick Skylarks between 1954 and 1998. The following model years are the most popular for Spark Plug purchases: 1998, 1997, 1996, 1995, 1994, 1993, 1992, 1991, and 1990.

Does Advance Auto Parts sell Spark Plugs for any other 1966 Buick models?

Yes. We stock Spark Plugs for 6 other popular 1966 Buick models. Some of the most popular are 1966 LeSabre Spark Plugs, 1966 Riviera Spark Plugs, 1966 Electra Spark Plugs, 1966 Special Spark Plugs, and 1966 Wildcat Spark Plugs.

What are the top-rated Spark Plugs that fit the 1966 Buick Skylark?

Based on 234 reviews by customers, our 1966 Buick Skylark Spark Plugs have an average customer rating of 4.8 stars. These are the highest-rated categories of Spark Plugs for the 1966 Buick Skylark and their top-rated products:

What types of Spark Plugs do you sell for my 1966 Buick Skylark?

As of 8/2/26, these are some of the most in-demand types of Spark Plugs for a 1966 Buick Skylark:

Can I get help with 1966 Buick Skylark Spark Plug orders?

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

What is your return policy for Buick Skylark Spark Plugs?

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