Ford Custom 500 Spark Plugs

Your One-Stop Shop For Trusted Ford Custom 500 Spark Plugs

If you’re in search of Ford Custom 500 Spark Plugs aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 70 Spark Plugs from top brands with prices ranging from $1.25 to $67.49.

Beyond great prices, we stock trusted brands manufacturing all types of Spark Plugs for your Ford Custom 500.

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

At Advance Auto Parts, we don’t think top quality Spark Plugs have to cost top dollar, and we prove it. Browse our top Ford Custom 500 Spark Plugs below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

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Essential Ford Custom 500 Spark Plugs

Autolite – Autolite Racing Resistor Spark Plug: Enhanced Heat Transfer for Peak Performance, AR25 (Part No.AR25)

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

from

$4.99
Racing Resistor Spark Plug is expertly crafted to deliver peak performance in competitive racing environments. Featuring a cut-back ground electrode, it ensures optimal ignitability and superior heat transfer for quicker starts and maximum engine efficiency. The yttrium-enhanced alloy reduces ground wire temperature by up to 8%, making it ideal for colder heat ranges and performance modifications. Its anti-corrosive nickel plating resists rust better than black oxide, ensuring long-lasting durability. Designed with a high alumina multi-rib ceramic insulator, it offers exceptional thermal conductivity and insulation, preventing flash-over and enhancing strength. The tapered seat type optimizes performance across various racing venues, from oval tracks to road circuits. Built to withstand intense conditions, this spark plug is compatible with all aftermarket cylinder heads used in competitive racing. With a mid-projection center electrode and nickel tip materials, it combines reliability and efficiency, making it a top choice for racers seeking consistent, high-performance ignition.
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ACDelco – ACDelco Double Platinum Spark Plug, 41-803 (Part No.41-803)

ACDelco Double Platinum Spark Plug, 41-803

from

$11.49
ACDelco Gold (Professional) Double Platinum Spark Plug are a high quality alternative to Original Equipment (OE) parts. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 26 (Part No.26)

Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 26

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$4.79
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 offers exceptional corrosion resistance, ensuring long-lasting durability even in demanding conditions. With a tapered seat type and integrated resistor, these spark plugs are built to meet performance expectations, delivering quick starts and the power your vehicle needs.
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ACDelco – ACDelco Conventional Spark Plug, R85TS (Part No.R85TS)

ACDelco Conventional Spark Plug, R85TS

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$4.29
ACDelco Gold (Professional) Conventional Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These Conventional Spark Plugs are designed for reliability and efficient performance, and are the high quality replacements for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.
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NGK – NGK V-Power Nickel Spark Plug (UR4): Enhanced Ignitability & Performance, 6630 (Part No.6630)

NGK V-Power Nickel Spark Plug (UR4): Enhanced Ignitability & Performance, 6630

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$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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Motorcraft – Motorcraft Spark Plug: Quick Starts & Enhanced Fuel Economy, SP-420 (Part No.SP-420)

Motorcraft Spark Plug: Quick Starts & Enhanced Fuel Economy, SP-420

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$2.79
The Spark Plug: Quick Starts & Enhanced Fuel Economy by Motorcraft is the same high-quality part installed when your engine first rolled off the assembly line, ensuring a perfect fit and reliable performance. Designed and recommended by Ford Motor Company, these spark plugs are engineered to deliver quick starts, improved fuel economy, and smooth acceleration, making them an essential component for maintaining your vehicle’s peak performance. Featuring a tapered seat type, they provide a secure and precise fit, reducing the risk of leaks or misfires. Built to meet the highest standards of durability and efficiency, these spark plugs offer exceptional value by enhancing your engine’s performance and longevity. Whether you’re replacing worn-out plugs or performing routine maintenance, trust Motorcraft to keep your vehicle running smoothly.
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Autolite – Autolite Double Platinum Spark Plug: Enhanced Durability & Performance, APP25 (Part No.APP25)

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

from

$7.49
The Double Platinum Spark Plug is engineered for exceptional durability and performance, making it a top choice for distributor-less ignition system (DIS) engines. Featuring a platinum-to-platinum design, it minimizes gap erosion and reduces misfires, ensuring a longer service life compared to copper and standard platinum plugs. Its yttrium-enhanced ground electrode delivers superior heat transfer, allowing it to withstand high temperatures and pressures for extended durability. The high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. With a mid-projection center electrode and tapered seat type, this performance-grade spark plug is designed to deliver consistent ignition and efficiency. Both the center and ground electrode tips are crafted from platinum, ensuring robust functionality and reliability. Ideal for drivers seeking enhanced engine performance and longevity, this spark plug is built to meet the demands of modern engines.
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Autolite – Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 46 (Part No.46)

Autolite Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 46

from

$4.79
Autolite Copper spark plugs are designed to deliver reliable performance, ensuring quick starts and the power your vehicle demands. Featuring a copper core center electrode, these spark plugs excel in thermal control and resist fouling, while the high nickel alloy center and ground electrodes provide extended life. The high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, offering increased strength and durability. With a nickel-plated shell, these spark plugs resist corrosion for long-lasting performance. Engineered for optimal fuel economy, they help improve mileage while delivering smooth and responsive acceleration. Compliant with Original Equipment Service (OES) design Standards, they ensure dependable operation and a secure fit with their tapered seat type. The long projection center electrode and nickel tip materials further enhance their efficiency and reliability, making them a valuable addition to your vehicle’s ignition system.
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Motorcraft – Motorcraft Platinum Spark Plug: Fine Wire Design for Enhanced Ignition, SP-549-X (Part No.SP-549-X)

Motorcraft Platinum Spark Plug: Fine Wire Design for Enhanced Ignition, SP-549-X

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$5.29
The Platinum Spark Plug with a fine wire center electrode design is engineered for superior ignition performance and efficiency. Featuring a platinum center electrode tip, it ensures excellent conductivity and long-lasting durability, making it a reliable choice for consistent engine starts and smooth operation. The nickel ground electrode tip complements the design, providing robust performance under various driving conditions. Its tapered seat type ensures a secure fit, reducing the risk of gas leakage and enhancing overall engine efficiency. This spark plug is an ideal upgrade for those seeking improved fuel combustion, reduced emissions, and extended service life, delivering exceptional value and reliability for your vehicle.
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DENSO – DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, ITF16TT, 4715 (Part No.4715)

DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, ITF16TT, 4715

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$15.49
The Iridium TT Spark Plug combines the durability of an OE-style plug with the power and torque of high-performance engineering. Featuring the world’s smallest 0.4mm Iridium Center Electrode, it maximizes firing potential while the 0.7mm Needle Tip Ground Electrode promotes higher spark energy and minimizes heat quenching. Built with DENSO’s patented Iridium-Rhodium alloy formula, it offers unmatched durability and withstands extreme temperatures exceeding 4000 Deg F. The advanced 360-degree laser welding process ensures a robust bond and structural integrity, while the Twin-Tip Technology, derived from OE Super Ignition Plug design, blends a fine wire Iridium Center Electrode with a Needle Tip Platinum Ground Electrode for ultimate endurance. This spark plug delivers over 100,000 miles of reliable performance, enhanced fuel economy, and reduced emissions, making it an eco-friendly and cost-effective choice. With premium materials and a tapered seat type, the Iridium TT Spark Plug is engineered for optimal performance and long-lasting reliability.
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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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Autolite – Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP45 (Part No.AP45)

Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP45

from

$5.49
Autolite Platinum spark plugs are crafted for superior performance and durability, making them ideal for older engine applications. Featuring a platinum center electrode firing tip, these spark plugs ensure quicker firing, smoother starts, and enhanced acceleration while improving fuel efficiency. The platinum firing tip prevents gap erosion, extending the service life, while the high alumina ceramic insulator offers excellent thermal conductivity and insulation for added strength. A multi-rib insulator design prevents flash-over, and the nickel-plated shell resists corrosion for long-lasting reliability. With a tapered seat type, these spark plugs deliver enhanced performance and durability. Designed with a long projection center electrode and a nickel ground electrode tip, they are built for performance-grade applications. Whether you’re seeking improved engine efficiency or extended durability, these spark plugs are a dependable choice for maintaining optimal engine functionality.
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ACDelco – ACDelco Conventional Spark Plug, CR45TS (Part No.CR45TS)

ACDelco Conventional Spark Plug, CR45TS

from

$6.49
ACDelco GM Original Equipment Conventional Spark Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. These Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco GM Original Equipment parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional.
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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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Spark Plugs Brands You Can Trust For Your Ford Custom 500

9 trusted brands of Spark Plugs line our shelves, ready to help keep your Ford Custom 500 running smooth. Below are some of the most popular brands and their top Spark Plugs offerings:

Most Purchased Ford Custom 500 Spark Plugs from ACDelco

When you buy the most frequently purchased ACDelco brand Spark Plugs, you can be confident it will be the right part for your Ford Custom 500. Here are the ACDelco Spark Plugs Advanced Auto customers buy the most:
ACDelco Conventional Spark Plug, CR43TS
from $6.49
(177)
ACDelco Conventional Spark Plug, CR43TS
Spark Plugs
ACDelco Conventional Spark Plug, R45TS
from $5.49
(100)
ACDelco Conventional Spark Plug, R45TS
Spark Plugs

FAQs for Ford Custom 500 Spark Plugs

What are the most purchased Spark Plugs for the Ford Custom 500?

Out of 70 Spark Plugs for the Ford Custom 500, the most popular in our inventory are:

What are the top-rated Ford Custom 500 Spark Plugs?

Top-rated Spark Plugs for your Ford Custom 500 based on customer reviews/ratings are:
E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.42
from $8.49
(184)
E3 DiamondFIRE Automotive Spark Plug: More Power & Fuel Efficiency, E3.42
“Replaced my fouled plugs in my 305 sbc with these. The truck is definitely running better than it ever has. Great throttle response.”
Motorcraft Platinum Spark Plug: Enhances Durability & Reduces Misfires, SP-502
from $6.99
(31)
Motorcraft Platinum Spark Plug: Enhances Durability & Reduces Misfires, SP-502
“Checked gap setting and they where on the money.”