1966 GMC I3500 Ignition and Tune-Up Products

Essential Ignition and Tune-Up Products for 1966 GMC I3500s

Carquest Premium – Distributor T1612: 100% New, With Cap and Rotor (Part No.T1612)

Distributor T1612: 100% New, With Cap and Rotor

from

$73.99
Carquest Premium distributors are built to meet or exceed the original equipment (OE) specifications for each application. Our distributors are built by a manufacturer that meets IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each distributor is supplied with the cap, rotor and any seals needed for installation. Carquest Premium distributors are 100% new and undergo extensive validation testing to ensure long-lasting ignition performance and reliability.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% new unit with no core charges
  • Precision machined shafts result in high speed accuracy and help prevent bearing failures
  • Every distributor is tested to ensure reliable and long-lasting performance
  • O-rings or gaskets included where applicable
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Carquest – Contact Set (Points) (Part No.A109V)

Contact Set (Points)

from

$20.05
BWD SELECT replacement parts are designed, specified and manufactured with one goal in mind – to make them the very best. We use the finest materials and improve on OE specifications whenever possible. The result is maximum performance and longevity.

Product Features:
  • 100% pure copper windings in primary and secondary bobbins improve durability and provide higher resistance to internal shorts and dielectric breakdown
  • Thermoplastic housing withstands heat stress for enhanced durability
  • External core made from oriented silicon steel ensures durability and longevity
  • Stainless steel spring resists corrosion
  • Tin-plated brass terminals improve electrical contact and protect against corrosion
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Carquest Premium – Ignition Contact Set (Part No.AKA1003)

Ignition Contact Set

from

$20.99
The Ignition Contact Set is used in older vehicle applications to ground the ignition coil primary circuit and create the high secondary voltage required in the ignition process. Connected to the contact set is a condenser designed to absorb the high voltage spike created when the contact set opens.

Product Features:
  • Application matched component to ensure the system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Carquest Premium – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.EBC1715)

Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece

from

$46.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • 100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
  • Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure confidence and product reliability, every time.
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ACDelco – Ignition Coil (Part No.U505)

Ignition Coil

from

$79.99
An ACDelco Professional, premium aftermarket Ignition Coil is a high quality replacement for many vehicles on the road today. It increases electrical system voltage to help ignite the air/fuel mixture as the starting and charging system starts the engine, maintains the battery’s charge, and provides power to the electrical accessories while the engine is running. An ACDelco Professional Ignition Coil uses pure copper windings to improve durability and provides higher resistance to internal shorts and dielectric breakdown. Because the number and shape of the laminations determine the output characteristics of an ignition coil, ACDelco ensures that the silicone steel plates surrounding the ignition coil correctly match the original part size and number. Since steel laminations work best when they are new, shiny, and clean, ACDelco laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed. This premium aftermarket replacement ignition coil is manufactured to meet your expectations for fit, form, and function.

Product Features:
  • High quality coated windings to improve durability and provide protection against internal shorts and dielectric breakdown
  • Silicone steel plates surrounding the ignition coil correctly match the original part size and number exactly
  • Laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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Carquest Premium – Ignition Coil: Meets or Exceeds OE Specifications, 1 Count (Part No.EBC1414)

Ignition Coil: Meets or Exceeds OE Specifications, 1 Count

from

$43.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Built by IATF 16949 certified manufacturers for consistent durability
  • Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
  • Segmented secondary bobbins to distribute high voltage and prevent shorting
  • Extensive design validation testing to ensure long-lasting reliability
  • 100% end-of-line tested to ensure proper performance
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Carquest – Ignition Coil: Meets OE Specifications, 1 Count (Part No.26C1041)

Ignition Coil: Meets OE Specifications, 1 Count

from

$41.49
Carquest ignition coils meet original equipment (OE) fit, form and function and are built to ensure reliable starting and performance. Carquest ignition coils are tested to ensure proper spark and perfect fit for each application. These ignition coils are an affordable repair choice to restore the vehicle’s ignition system performance. Carquest ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Long service life and durable performance
  • High dielectric strength for reliability
  • Corrosion-resistant connections
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
  • High reliability
  • Long service life
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Carquest Premium – Distributor Cap (Part No.CAC1065)

Distributor Cap

from

$12.99
The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:
  • All products are constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Cap terminal conductor wires formed with precision guided machines to ensure precise final location in the final housing assembly.
  • Terminal inserts manufactured to precise tolerances to ensure a guaranteed electrical connection between the cap conductor wires and spark plug wire terminals.
  • Distributor rotor blade coated with RFI coating to prevent electrical magnetic interference with the vehicles electrical system.
  • Distributor and rotor housings manufactured using the latest plastic technologies to guarantee di-electric strength and long life cycle.
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Champion – Copper Plus Spark Plug (RN14YC): Dependable Performance & Durability (Part No.405)

Copper Plus Spark Plug (RN14YC): Dependable Performance & Durability

from

$4.99
The Copper Plus spark plug delivers dependable performance and durability, making it an ideal choice for maintaining your engine’s efficiency. Featuring a copper core center electrode, it ensures precise heat control for extended lifespan and consistent wear. Its nickel center electrode tip and flat seat design enhance reliability while meeting ISO and SAE Standards for proven performance. Built with superior corrosion resistance, this spark plug is designed to withstand harsh conditions, ensuring long-term functionality. As a standard replacement grade type with a resistor, it offers compatibility with a wide range of vehicles. Whether you’re looking for improved conductivity or reliable ignition, this spark plug provides excellent value and performance for your engine’s needs.

Product Features:
  • Copper Plus – Dependable Performance and Durability
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Superior corrosion resistance
  • Built to ISO and SAE standards for proven performance
  • Built to ISO and SAE standards for proven performance
  • Reliable Nickel Center Electrode Tip: Featuring a nickel center electrode tip and flat seat type, this spark plug enhances reliability and helps maintain your engine’s efficiency.
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Autolite – Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration (Part No.65)

Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration

from

$3.99
Autolite Copper spark plugs are expertly crafted to ensure your vehicle delivers reliable performance with every start. 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 under demanding conditions. Designed with a corrosion-resistant nickel-plated shell, these spark plugs are built to last. Their mid-projection center electrode and flat seat type ensure optimal compatibility, while the resistor design minimizes electrical interference. Engineered for quick starts, smooth acceleration, and enhanced fuel economy, these spark plugs are a dependable choice for maintaining your vehicle’s efficiency and performance.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • Quick Starts and Smooth Acceleration: Designed to deliver quick starts and smooth acceleration, ensuring a reliable performance for your vehicle.
  • Enhanced Fuel Economy: Engineered to provide good fuel economy, helping you save on fuel costs.
See More

Autolite – Platinum Spark Plug: Enhanced Durability & Improved Performance (Part No.AP65)

Platinum Spark Plug: Enhanced Durability & Improved Performance

from

$4.99
Platinum Spark Plug: Enhanced Durability & Improved Performance is crafted with a platinum center electrode firing tip that ensures quicker firing, smoother starts, and better acceleration while boosting fuel efficiency. Engineered with a platinum firing tip to prevent gap erosion, it offers a longer service life, making it ideal for older engine applications. The high alumina ceramic insulator enhances thermal conductivity and insulation, providing superior strength, while the multi-rib design prevents flash-over for reliable performance. Its nickel-plated shell resists corrosion, ensuring extended durability even in demanding conditions. Featuring a mid-projection standard center electrode design and a flat seat type, this performance-grade spark plug is backed by over 100 years of engineering expertise and a legacy of more than 11 billion plugs sold. Designed in the USA, it combines advanced materials like platinum and nickel to deliver consistent reliability and value for your vehicle.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Engineered in the USA: Backed by over 100 years of engineering expertise and a legacy of more than 11 billion plugs sold.
See More

ACDelco – Conventional Spark Plug: Reliable Performance & Durability (Part No.R44XLS)

Conventional Spark Plug: Reliable Performance & Durability

from

$6.29
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.

Product Features:
  • Black Onyx coating helps reduce corrosion
  • Copper core provides great heat transfer and helps maximize plug durability
  • Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over’ and misfires
  • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
  • Available for use in Marine applications
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
See More

Champion – Platinum Power Spark Plug (RN14PMC): Powerful Performance & Durability (Part No.3405)

Platinum Power Spark Plug (RN14PMC): Powerful Performance & Durability

from

$5.29
Champion Platinum Power spark plugs are engineered to deliver exceptional performance and durability, making them an ideal choice for maintaining peak engine efficiency. Featuring a platinum center electrode, these spark plugs ensure long-lasting reliability and consistent performance. The fine-wire center electrode enhances ignitability, while the V-trimmed ground electrode sharpens spark focus for optimal combustion. Constructed with exclusive Heat-Active alloy, the electrodes quickly reach and maintain the ideal operating temperature, ensuring smooth engine operation under various conditions. The platinum-tipped center wire resists wear and helps maintain the proper gap specification throughout the plug’s lifespan. Designed as a standard replacement with a flat seat type and integrated resistor, these spark plugs are a perfect OE replacement for a wide range of engines. With a nickel ground electrode tip and a focus on precision, these spark plugs provide powerful performance and long-term value for your vehicle.

Product Features:
  • Platinum Power- Premium Spark Plug. Powerful Performance.
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug
  • Integrated Resistor and Flat Seat Type: Equipped with an integrated resistor and flat seat type, making it an ideal OE replacement for various engines.
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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

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. E3.46 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.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn.
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
  • Wide Compatibility: The E3.46 spark plugs are 14mm with a 0.750 reach and a gasket seat, making them suitable for a wide range of applications from the 1960s to early 1990s, especially for import vehicles.
  • Widely Available: The E3.46 spark plugs are widely stocked in automotive retail stores, ensuring easy availability for consumers.
See More

Motorcraft – Spark Plug: Reliable Ignition for Optimal Engine Performance (Part No.SP-416-X)

Spark Plug: Reliable Ignition for Optimal Engine Performance

from

$7.29
Ensure your engine runs smoothly and efficiently with this high-quality spark plug, designed to deliver reliable ignition and optimal performance. Engineered for durability and precision, it provides consistent spark energy to maximize fuel combustion, improving both power output and fuel efficiency. Built to withstand extreme temperatures and pressures, this spark plug ensures long-lasting performance, reducing the need for frequent replacements. Its compatibility with a wide range of vehicles makes it a versatile choice for maintaining peak engine functionality. Whether you’re looking to restore lost performance or maintain your vehicle’s reliability, this spark plug offers exceptional value and dependable operation.

Product Features:
  • Designed for reliable ignition to ensure smooth and efficient engine operation.
  • Enhances fuel combustion for improved power output and fuel efficiency.
  • Built with durability to withstand extreme temperatures and pressures for long-lasting performance.
  • Compatible with a wide range of vehicles, offering versatility for various engine types.
  • Reduces the need for frequent replacements, providing exceptional value and dependable operation.
See More

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP65)

Double Platinum Spark Plug: Enhanced Durability & Performance

from

$6.99
Double Platinum Spark Plug offers enhanced durability and performance with its platinum-to-platinum design, effectively reducing gap erosion and minimizing misfires for a longer service life. Engineered for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs. The yttrium-enhanced ground electrode ensures superior heat transfer, maintaining durability under high temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. Featuring a mid-projection center electrode and flat seat type, this performance-grade spark plug is built with platinum-tipped electrodes for consistent ignition and lasting reliability. Designed to deliver exceptional value, it is a dependable choice for maintaining peak engine performance.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and flat seat type to ensure consistent ignition and reliable performance in demanding conditions.
See More

Upgrade your 1966 GMC I3500 with Top-Quality Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 1966 GMC I3500, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your GMC or enhancing its overall performance, Ignition and Tune-Up Products are key to keeping your I3500 functioning at its best. At Advance Auto Parts, we offer a wide selection of 16 Ignition and Tune-Up Products for the 1966 GMC I3500, designed to meet your needs without breaking the bank. From Spark Plug replacements to Ignition Coils and Boots upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Ignition and Tune-Up Products for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Ignition and Tune-Up Products for your 1966 GMC I3500 at great prices. Our Ignition and Tune-Up Products inventory for this model ranges from just $3.99 to $79.99, with an average price of $24.30. Our 16 Ignition and Tune-Up Products in stock come from 7 trusted brands, so you’re sure to find the right part for your 1966 GMC I3500 without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1966 GMC I3500, we stock popular OEM and aftermarket Ignition and Tune-Up Products from top names like Champion, ACDelco, Autolite, and more. Champion Ignition and Tune-Up Products start at just $4.99 and boast an impressive 4.7 stars average rating from customers. ACDelco and Autolite also bring quality to the table, with Ignition and Tune-Up Products available starting at $3.99, and at an average 4.7 stars rating. With 160 customer reviews and counting, our 1966 GMC I3500 Ignition and Tune-Up Products have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Ignition and Tune-Up Product upgrades. Explore related part types like Batteries and Chargers, Fluids and Chemicals and more to make sure your 1966 GMC I3500 is always ready to roll. We’re committed to providing you with everything you need to keep your I3500 in top shape, all in one place. Start shopping confidently below for your 1966 GMC I3500!

Best-Selling Spark Plugs for 1966 GMC I3500s

Enhance the driving experience in your GMC with 8 quality Spark Plug components, starting at $3.99.

Autolite – Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration (Part No.65)

Copper Resistor Spark Plug: Quick Starts & Smooth Acceleration

from

$3.99
Autolite Copper spark plugs are expertly crafted to ensure your vehicle delivers reliable performance with every start. 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 under demanding conditions. Designed with a corrosion-resistant nickel-plated shell, these spark plugs are built to last. Their mid-projection center electrode and flat seat type ensure optimal compatibility, while the resistor design minimizes electrical interference. Engineered for quick starts, smooth acceleration, and enhanced fuel economy, these spark plugs are a dependable choice for maintaining your vehicle’s efficiency and performance.

Product Features:
  • The copper core center electrode aids in thermal control and improves resistance to fouling.
  • Its specially engineered high nickel alloy center and ground electrode provides extended life.
  • The high alumina multi-rib ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended periods.
  • Quick Starts and Smooth Acceleration: Designed to deliver quick starts and smooth acceleration, ensuring a reliable performance for your vehicle.
  • Enhanced Fuel Economy: Engineered to provide good fuel economy, helping you save on fuel costs.
See More

ACDelco – Conventional Spark Plug: Reliable Performance & Durability (Part No.R44XLS)

Conventional Spark Plug: Reliable Performance & Durability

from

$6.29
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.

Product Features:
  • Black Onyx coating helps reduce corrosion
  • Copper core provides great heat transfer and helps maximize plug durability
  • Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over’ and misfires
  • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
  • Available for use in Marine applications
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional
  • Premium aftermarket replacement part
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
See More

Champion – Copper Plus Spark Plug (RN14YC): Dependable Performance & Durability (Part No.405)

Copper Plus Spark Plug (RN14YC): Dependable Performance & Durability

from

$4.99
The Copper Plus spark plug delivers dependable performance and durability, making it an ideal choice for maintaining your engine’s efficiency. Featuring a copper core center electrode, it ensures precise heat control for extended lifespan and consistent wear. Its nickel center electrode tip and flat seat design enhance reliability while meeting ISO and SAE Standards for proven performance. Built with superior corrosion resistance, this spark plug is designed to withstand harsh conditions, ensuring long-term functionality. As a standard replacement grade type with a resistor, it offers compatibility with a wide range of vehicles. Whether you’re looking for improved conductivity or reliable ignition, this spark plug provides excellent value and performance for your engine’s needs.

Product Features:
  • Copper Plus – Dependable Performance and Durability
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Superior corrosion resistance
  • Built to ISO and SAE standards for proven performance
  • Built to ISO and SAE standards for proven performance
  • Reliable Nickel Center Electrode Tip: Featuring a nickel center electrode tip and flat seat type, this spark plug enhances reliability and helps maintain your engine’s efficiency.
See More

Autolite – Platinum Spark Plug: Enhanced Durability & Improved Performance (Part No.AP65)

Platinum Spark Plug: Enhanced Durability & Improved Performance

from

$4.99
Platinum Spark Plug: Enhanced Durability & Improved Performance is crafted with a platinum center electrode firing tip that ensures quicker firing, smoother starts, and better acceleration while boosting fuel efficiency. Engineered with a platinum firing tip to prevent gap erosion, it offers a longer service life, making it ideal for older engine applications. The high alumina ceramic insulator enhances thermal conductivity and insulation, providing superior strength, while the multi-rib design prevents flash-over for reliable performance. Its nickel-plated shell resists corrosion, ensuring extended durability even in demanding conditions. Featuring a mid-projection standard center electrode design and a flat seat type, this performance-grade spark plug is backed by over 100 years of engineering expertise and a legacy of more than 11 billion plugs sold. Designed in the USA, it combines advanced materials like platinum and nickel to deliver consistent reliability and value for your vehicle.

Product Features:
  • Engineered with a platinum firing tip that prevents gap erosion for longer service life.
  • Its high alumina ceramic insulator provides thermal conductivity and superior insulation for increased strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a nickel-plated shell that is corrosion resistant to provide increased durability for extended life.
  • Engineered in the USA: Backed by over 100 years of engineering expertise and a legacy of more than 11 billion plugs sold.
See More

Champion – Platinum Power Spark Plug (RN14PMC): Powerful Performance & Durability (Part No.3405)

Platinum Power Spark Plug (RN14PMC): Powerful Performance & Durability

from

$5.29
Champion Platinum Power spark plugs are engineered to deliver exceptional performance and durability, making them an ideal choice for maintaining peak engine efficiency. Featuring a platinum center electrode, these spark plugs ensure long-lasting reliability and consistent performance. The fine-wire center electrode enhances ignitability, while the V-trimmed ground electrode sharpens spark focus for optimal combustion. Constructed with exclusive Heat-Active alloy, the electrodes quickly reach and maintain the ideal operating temperature, ensuring smooth engine operation under various conditions. The platinum-tipped center wire resists wear and helps maintain the proper gap specification throughout the plug’s lifespan. Designed as a standard replacement with a flat seat type and integrated resistor, these spark plugs are a perfect OE replacement for a wide range of engines. With a nickel ground electrode tip and a focus on precision, these spark plugs provide powerful performance and long-term value for your vehicle.

Product Features:
  • Platinum Power- Premium Spark Plug. Powerful Performance.
  • Platinum center electrode for long life
  • Fine-wire center electrode for greater ignitability
  • V-trimmed ground electrode promotes sharper spark focus
  • Heat-Active alloy allows electrodes to reach optimal temperature
  • Platinum tipped center wire resists wear and helps to maintain proper gap spec over life of the plug
  • Integrated Resistor and Flat Seat Type: Equipped with an integrated resistor and flat seat type, making it an ideal OE replacement for various engines.
See More

E3 – DiamondFire Spark Plug (E3.46): Enhanced Power & Fuel Efficiency (Part No.E3.46)

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

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. E3.46 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.

Product Features:
  • E3’s Diamond Fire edge to edge ground electrode provides maximum performance with increased efficiency and a faster more complete burn.
  • Smoother Acceleration & Idle – The faster flame initiated by the spark plug results in a more complete burn of the ingested fuel charge. More pressure is created against the piston more fuel is put to work
  • Energy – Power output improved up to 6% on average in the typical operating ranges. Results will vary.
  • Efficiency – The “diamond shaped” side wire electrode projects the combustion spark in a way that more quickly ignites the air/fuel mixture, thereby creating a significantly faster and larger flame kernel. The result is that more fuel is put to work durin
  • E3’s patented Diamond Fire Technology provides a cleaner burning combustion, which translates into fuel savings and reduced engine carbon deposits
  • The Spark Plugs are pre-gapped at the factory and cannot be adjusted.
  • Wide Compatibility: The E3.46 spark plugs are 14mm with a 0.750 reach and a gasket seat, making them suitable for a wide range of applications from the 1960s to early 1990s, especially for import vehicles.
  • Widely Available: The E3.46 spark plugs are widely stocked in automotive retail stores, ensuring easy availability for consumers.
See More

Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP65)

Double Platinum Spark Plug: Enhanced Durability & Performance

from

$6.99
Double Platinum Spark Plug offers enhanced durability and performance with its platinum-to-platinum design, effectively reducing gap erosion and minimizing misfires for a longer service life. Engineered for distributor-less ignition system (DIS) engines, it outperforms copper and standard platinum plugs. The yttrium-enhanced ground electrode ensures superior heat transfer, maintaining durability under high temperatures and pressure. Its high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. Featuring a mid-projection center electrode and flat seat type, this performance-grade spark plug is built with platinum-tipped electrodes for consistent ignition and lasting reliability. Designed to deliver exceptional value, it is a dependable choice for maintaining peak engine performance.

Product Features:
  • Engineered with a platinum-to-platinum design that prevents gap erosion, extending the life of the spark plug.
  • The yttrium-Enhanced Ground Electrode delivers superior heat transfer that delivers more durability under high temps and pressure for greater life.
  • Its high alumina ceramic insulator provides optimum thermal conductivity and dielectric strength.
  • The multi-rib insulator prevents flash-over.
  • Designed with a mid-projection center electrode and flat seat type to ensure consistent ignition and reliable performance in demanding conditions.
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Motorcraft – Spark Plug: Reliable Ignition for Optimal Engine Performance (Part No.SP-416-X)

Spark Plug: Reliable Ignition for Optimal Engine Performance

from

$7.29
Ensure your engine runs smoothly and efficiently with this high-quality spark plug, designed to deliver reliable ignition and optimal performance. Engineered for durability and precision, it provides consistent spark energy to maximize fuel combustion, improving both power output and fuel efficiency. Built to withstand extreme temperatures and pressures, this spark plug ensures long-lasting performance, reducing the need for frequent replacements. Its compatibility with a wide range of vehicles makes it a versatile choice for maintaining peak engine functionality. Whether you’re looking to restore lost performance or maintain your vehicle’s reliability, this spark plug offers exceptional value and dependable operation.

Product Features:
  • Designed for reliable ignition to ensure smooth and efficient engine operation.
  • Enhances fuel combustion for improved power output and fuel efficiency.
  • Built with durability to withstand extreme temperatures and pressures for long-lasting performance.
  • Compatible with a wide range of vehicles, offering versatility for various engine types.
  • Reduces the need for frequent replacements, providing exceptional value and dependable operation.
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Most Popular 1966 GMC I3500 Ignition Coils and Boots

Customize your GMC with 4 Ignition Coils and Boots products like Ignition Coils, all priced under $79.99.

Carquest Premium – Ignition Coil: Meets or Exceeds OE Specifications, 1 Count (Part No.EBC1414)

Ignition Coil: Meets or Exceeds OE Specifications, 1 Count

from

$43.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Built by IATF 16949 certified manufacturers for consistent durability
  • Coil drivers match OE for current limit, electrostatic discharge (ESD) protection and multi-spark
  • Segmented secondary bobbins to distribute high voltage and prevent shorting
  • Extensive design validation testing to ensure long-lasting reliability
  • 100% end-of-line tested to ensure proper performance
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
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Carquest – Ignition Coil: Meets OE Specifications, 1 Count (Part No.26C1041)

Ignition Coil: Meets OE Specifications, 1 Count

from

$41.49
Carquest ignition coils meet original equipment (OE) fit, form and function and are built to ensure reliable starting and performance. Carquest ignition coils are tested to ensure proper spark and perfect fit for each application. These ignition coils are an affordable repair choice to restore the vehicle’s ignition system performance. Carquest ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Long service life and durable performance
  • High dielectric strength for reliability
  • Corrosion-resistant connections
  • Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413
  • High reliability
  • Long service life
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ACDelco – Ignition Coil (Part No.U505)

Ignition Coil

from

$79.99
An ACDelco Professional, premium aftermarket Ignition Coil is a high quality replacement for many vehicles on the road today. It increases electrical system voltage to help ignite the air/fuel mixture as the starting and charging system starts the engine, maintains the battery’s charge, and provides power to the electrical accessories while the engine is running. An ACDelco Professional Ignition Coil uses pure copper windings to improve durability and provides higher resistance to internal shorts and dielectric breakdown. Because the number and shape of the laminations determine the output characteristics of an ignition coil, ACDelco ensures that the silicone steel plates surrounding the ignition coil correctly match the original part size and number. Since steel laminations work best when they are new, shiny, and clean, ACDelco laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed. This premium aftermarket replacement ignition coil is manufactured to meet your expectations for fit, form, and function.

Product Features:
  • High quality coated windings to improve durability and provide protection against internal shorts and dielectric breakdown
  • Silicone steel plates surrounding the ignition coil correctly match the original part size and number exactly
  • Laminations are coated to hinder corrosion and many feature molded plastic protection to help ensure that nothing is exposed
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
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Carquest Premium – Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece (Part No.EBC1715)

Ignition Coil: Meets or Exceeds Original Equipment Specifications, 1 Piece

from

$46.99
Carquest Premium ignition coils meet or exceed original equipment (OE) specifications and are developed by top OE/OES manufacturers to ensure superior performance. All of our Carquest Premium ignition coils are developed by IATF 16949 certified manufacturers for consistent durability and long-lasting performance. These ignition coils use high-quality components and will utilize optimized designs on applications where the OE ignition coil had frequent failures. We require stringent testing standards to ensure proper fit and performance for each application and stand behind our Carquest Premium ignition coils with an industry-leading warranty. Carquest Premium ignition coils are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:
  • Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
  • 100% pure copper precision-wound windings increase coil life and ensure reliability and maximum coil output when needed.
  • Highly conductive aluminum alloy secondary terminal guarantees secondary coil terminals will not oxidize (rust), will provide excellent conductivity, extended coil life and will not cause excessive stress on the primary control circuit.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure confidence and product reliability, every time.
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Top Picks for 1966 GMC I3500 Distributors

Upgrade GMC I3500s with top-quality Distributors parts, including 2 OEM and aftermarket selections for your 1966 model.

Carquest Premium – Distributor Cap (Part No.CAC1065)

Distributor Cap

from

$12.99
The distributor cap & rotor are just two pieces of this type of ignition system which is typically driven by the engine’s camshaft. The distributor is the device that delivers the ignition spark to the spark plugs at a precise time, and spark timing is critical. Any wear or component out of place in this type of system will result in failure. Within the distributor and mounted to it are many individual pieces which allow the distributor and system to be maintained and repaired to keep it in top working order.

Product Features:
  • All products are constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • Cap terminal conductor wires formed with precision guided machines to ensure precise final location in the final housing assembly.
  • Terminal inserts manufactured to precise tolerances to ensure a guaranteed electrical connection between the cap conductor wires and spark plug wire terminals.
  • Distributor rotor blade coated with RFI coating to prevent electrical magnetic interference with the vehicles electrical system.
  • Distributor and rotor housings manufactured using the latest plastic technologies to guarantee di-electric strength and long life cycle.
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Carquest Premium – Distributor T1612: 100% New, With Cap and Rotor (Part No.T1612)

Distributor T1612: 100% New, With Cap and Rotor

from

$73.99
Carquest Premium distributors are built to meet or exceed the original equipment (OE) specifications for each application. Our distributors are built by a manufacturer that meets IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Each distributor is supplied with the cap, rotor and any seals needed for installation. Carquest Premium distributors are 100% new and undergo extensive validation testing to ensure long-lasting ignition performance and reliability.

Product Features:
  • Designed to meet or exceed OE specifications for fit, form and function
  • 100% new unit with no core charges
  • Precision machined shafts result in high speed accuracy and help prevent bearing failures
  • Every distributor is tested to ensure reliable and long-lasting performance
  • O-rings or gaskets included where applicable
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In-Demand Ignition Kits for 1966 GMC I3500s

Select from 2 premium Ignition Kits parts for your 1966 GMC I3500, with prices ranging from $20.05 to $20.99.

Carquest – Contact Set (Points) (Part No.A109V)

Contact Set (Points)

from

$20.05
BWD SELECT replacement parts are designed, specified and manufactured with one goal in mind – to make them the very best. We use the finest materials and improve on OE specifications whenever possible. The result is maximum performance and longevity.

Product Features:
  • 100% pure copper windings in primary and secondary bobbins improve durability and provide higher resistance to internal shorts and dielectric breakdown
  • Thermoplastic housing withstands heat stress for enhanced durability
  • External core made from oriented silicon steel ensures durability and longevity
  • Stainless steel spring resists corrosion
  • Tin-plated brass terminals improve electrical contact and protect against corrosion
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Carquest Premium – Ignition Contact Set (Part No.AKA1003)

Ignition Contact Set

from

$20.99
The Ignition Contact Set is used in older vehicle applications to ground the ignition coil primary circuit and create the high secondary voltage required in the ignition process. Connected to the contact set is a condenser designed to absorb the high voltage spike created when the contact set opens.

Product Features:
  • Application matched component to ensure the system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
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Top-Rated Ignition and Tune-Up Products Brands For Your 1966 GMC I3500

Shop for the best-rated brands offering Ignition and Tune-Up Products and other products for your 1966 GMC I3500s. Below you’ll find some of our best rated Ignition and Tune-Up Products from Champion, ACDelco, and Autolite, and more. Ignition and Tune-Up Products from these brands that fit a 1966 I3500 start at just $3.99 and are rated as high as 4.7 stars. OEM and aftermarket Ignition and Tune-Up Products don’t get more top quality, durable, and affordable than from the brands below.

Popular Champion 1966 GMC I3500 Ignition and Tune-Up Products

When it comes to maintaining or upgrading your 1966 GMC I3500, using quality Ignition and Tune-Up Products is essential to ensure durability and a perfect fit. Champion ticks all of those boxes. We offer a wide selection of Champion Ignition and Tune-Up Products, specifically designed for the 1966 GMC I3500. With over 2 Champion brand Ignition and Tune-Up Products in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $4.99, with an average price of just $5.14. Plus, with over 4 customer reviews and an average rating of 4.7 stars, you can trust that our Champion Ignition and Tune-Up Products will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
Platinum Power Spark Plug (RN14PMC): Powerful Performance & Durability
from $5.29
(1)
Platinum Power Spark Plug (RN14PMC): Powerful Performance & Durability
“Used Champion since i was a kid”

Popular ACDelco 1966 GMC I3500 Ignition and Tune-Up Products

ACDelco auto parts is one of the highest quality Ignition and Tune-Up Product brands in the market. Any 1966 GMC I3500 owner should feel confident when installing genuine ACDelco parts in their vehicle. To ensure the best fit and performance for your 1966 I3500, Advance Auto Parts carries a full inventory of 1 ACDelco Ignition and Tune-Up Products. Plus you will be keeping your GMC in peak condition while saving money because prices on these ACDelco Ignition and Tune-Up Products range up to $6.29, plus, with more than 6 customer reviews and an impressive 4.7 stars average rating, you can be confident the Fram Ignition and Tune-Up Products below will deliver on both quality and value.
Conventional Spark Plug: Reliable Performance & Durability
from $6.29
(6)
Conventional Spark Plug: Reliable Performance & Durability
“Review is not so much about spark plugs, rather Advance Auto Parts, the the great job they do from beginning to end of sale.”

FAQs for 1966 GMC I3500 Ignition and Tune-Up Products

Which Ignition and Tune-Up Products are best-sellers for 1966 GMC I3500s?

Out of 16 Ignition and Tune-Up Products that fit 1966 GMC I3500s, the following parts are the top sellers:

What’s the price range for 1966 GMC I3500 Ignition and Tune-Up Products?

Ignition and Tune-Up Product prices for the 1966 GMC I3500 start at $3.99 and go up to $79.99 for the most premium parts.

What’s the average price of a Ignition and Tune-Up Product for a 1966 GMC I3500?

The average price for Ignition and Tune-Up Products for the 1966 GMC I3500 is $24.30. Keep in mind the variety of part types within our Ignition and Tune-Up Product category so you are likely to find a wide range of prices across a variety of parts and components.

What are the cheapest Ignition and Tune-Up Products for my 1966 GMC I3500?

What are the top-rated Ignition and Tune-Up Products that fit the 1966 GMC I3500?

Out of 160 reviews by customers, our 1966 GMC I3500 Ignition and Tune-Up Products have an average customer rating of . These are some of the highest-rated Ignition and Tune-Up Product types for the 1966 GMC I3500 and their top-rated products:

What types of Ignition and Tune-Up Products do you sell for my 1966 GMC I3500?

As of 11/2/25, these are some of the most in-demand types of Ignition and Tune-Up Products for a 1966 GMC I3500:

Can I get help with 1966 GMC I3500 Ignition and Tune-Up Product orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about GMC Ignition and Tune-Up Products and more.

What is your return policy for GMC I3500 Ignition and Tune-Up Products?

Advance Auto Parts keeps returns simple. For new GMC I3500 Ignition and Tune-Up Products and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.