1978 Ford Country Squire Spark Plugs

Essential 1978 Ford Country Squire Spark Plugs

MSD Ignition – Wire Set; Super Conductor; Multi-Angle Plug; HEI Cap (Part No.31189)

Wire Set; Super Conductor; Multi-Angle Plug; HEI Cap

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$129.99
For engines with late-model type (HEI spark plug top) distributor caps. Multi-angle boots and terminals installed on one end. 90 degree distributor boots and terminals included.

Product Features:
  • Extra Long 8.5mm Wires So You Can Cut To Your Designed Length
  • Distributor Cap – Boots and Terminals Included
  • Includes Mini-Stripper-Crimper For Factory Style Crimps
  • Size Includes [8] 90 Degree Boots/Terminal Ends
  • Durable outer sleeve is a proprietary compound for resistance to high heat or abrasion
  • Stainless steel terminals feature dual crimp tabs to grip wire conductor and outer jacket separately
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Accel – 8.8Mm Spiral Universal Fit (Part No.8033)

8.8Mm Spiral Universal Fit

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$153.99
These ACCEL 8.8mm wires feature a carbon/graphite core that virtually eliminate RFI noise while providing maximum conductivity for ultimate performance in any race or street application. Double silicon insulation eliminates leakage and misfire.

Product Features:
  • 500 Ohms/ft Of Resistance
  • 550 F Rated Silicone Jacket
  • Stainless Steel Plug Terminals
  • Custom-fit Universal And Import Coverage
  • Pre And Post HEI Vehicles
  • Magnetic Suppression
  • Fiberglass/Kevlar Core
  • 500 Ohms Resistance
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MSD Ignition – Wire Set; Super Conductor; 8-cyl. Multi-Angle Plug; Socket/HEI (Part No.31199)

Wire Set; Super Conductor; 8-cyl. Multi-Angle Plug; Socket/HEI

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$129.99
Set includes terminals for engines with early type (socket) and late type (HEI spark plug top) distributor caps. 90 degree boots and terminals factory installed on one end.

Product Features:
  • Extra Long 8.5mm Wires So You Can Cut To Your Designed Length
  • Incl. both socket-style and spark plug-style boots and terminals
  • Includes Mini-Stripper-Crimper For Factory Style Crimps
  • Size Includes: [2]48/50/56 in./[3] 32 in. Wires/Boots/Terminals
  • Durable outer sleeve is a proprietary compound for resistance to high heat or abrasion
  • Stainless steel terminals feature dual crimp tabs to grip wire conductor and outer jacket separately
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Motorcraft – Double Platinum Spark Plug: Enhances Durability & Reduces Misfires (Part No.SP-459)

Double Platinum Spark Plug: Enhances Durability & Reduces Misfires

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$5.49
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. With a platinum center and ground electrode tip, they are resistant to oxidation and arc erosion, ensuring long-lasting performance. The multi-rib insulator protects against misfires, and they are designed to fit Ford, Lincoln, and Mercury vehicles exactly. Backed by Motorcraft’s Service Parts Warranty, these spark plugs offer service intervals of up to 100,000 miles and help prevent false check engine lights. Made with high-quality materials, Motorcraft Spark Plugs deliver reliable performance for almost any application, making them the same trusted components that were in your vehicle when it was manufactured.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • Enhanced Durability: Engineered with a platinum center and ground electrode tip, these spark plugs are resistant to oxidation and arc erosion, ensuring long-lasting performance.
  • Fuel Efficiency and Emissions: Designed to reduce fuel consumption and optimize emissions, contributing to a more efficient and environmentally friendly driving experience.
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E3 – DiamondFIRE Automotive Spark Plug: More Power, Saves Gas (Part No.E3.42)

DiamondFIRE Automotive Spark Plug: More Power, Saves Gas

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$7.49
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. E3.42 is a 14mm, 0.460 reach plug with a taper seat. It fits domestic applications in the 80s to early 90s, and 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 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.
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Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP5145)

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition

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$8.99
Autolite® Iridium XP Enhanced Alloy Technology Spark Plugs is one of the brand’s most technologically advanced spark plugs ever. These spark plugs provide better durability and a more focused ignition for better overall ignitability and optimum performance. Autolite® spark plugs are the best alternativ e to OE spark plugs, offering OE form, fit and function for all makes and models, both foreign and domestic, at a value price. Autolite provides the automotive aftermarket and original equipment manufacturers with the highest quality ignition products and is the leading supplier of spark plugs.
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Motorcraft – Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption (Part No.SP-425-A)

Standard Spark Plug: Enhances Durability & Reduces Fuel Consumption

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$4.49
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles, engineered to meet strict Ford engineering standards for optimal performance and reliability. These spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption, and optimize emissions. They are resistant to oxidation and arc erosion, feature a multi-rib insulator to protect against misfire, and offer service intervals of up to 100,000 miles. Designed with high-quality materials, Motorcraft Spark Plugs ensure reliable performance for almost any application and are backed by Motorcraft’s Service Parts Warranty. They are an exact fit for Ford, Lincoln, and Mercury vehicles and help prevent false check engine lights, delivering the same performance and reliability as the original components installed during manufacturing.

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
  • Enhanced Durability: Engineered to meet strict Ford engineering standards, these spark plugs are designed to provide long-lasting performance and withstand harsh conditions.
  • Reduces Fuel Consumption: Specifically matched to engines to optimize fuel efficiency, helping you save on fuel costs.
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Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.25)

Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration

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$3.49
With over 100 years of engineering expertise and over 11 billion plugs sold, Autolite continues to innovate with its copper spark plugs. Designed and engineered in the USA, these plugs feature a copper-glass seal that bonds the insulator, terminal post, and center electrode together, ensuring full required voltage at the spark gap with a 100% leak-proof, gas-tight seal. The multi-rib insulator reduces the risk of flash-over, while the one-piece terminal post adds strength and durability. Additionally, the built-in resistor minimizes radio frequency interference (RFI) and electrode erosion, making these spark plugs a reliable choice for enhancing your vehicle’s performance.

Product Features:
  • Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
  • Multi-rib insulator reduces danger of “flash-over”
  • One-piece terminal post adds strength
  • Resistor reduces radio frequency interference (RFI) and electrode erosion
  • Quick Starts: The Autolite Copper Spark Plug ensures quick engine starts, enhancing your vehicle’s reliability and performance.
  • Good Fuel Economy: Engineered to optimize fuel efficiency, these spark plugs help you save on fuel costs while maintaining excellent performance.
  • Smooth Acceleration: Experience smoother acceleration with Autolite’s advanced copper spark plug design, providing a more responsive driving experience.
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Motorcraft – SPARK PLUG (Part No.SP-450)

SPARK PLUG

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$4.79
Motorcraft spark plugs are designed, engineered and recommended by Ford Motor Company.

Product Features:
  • Same part installed when the engine rolled off the assembly line
  • Designed to deliver quick starts, enhanced fuel economy and smooth acceleration
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NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, WR5IX (Part No.7510)

Iridium IX Spark Plug: Single Iridium Fine Wire, WR5IX

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$11.99
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.

Product Features:
  • SINGLE IRIDIUM TIP: Fine wire 0.6 millimeter iridium tip center electrode ensures high durability and a consistently stable spark
  • IRIDIUM ALLOY CENTER ELECTRODE: Iridium’s density (6x that of platinum) and extremely high melting point is perfect for modern high efficiency engines
  • TAPERED CUT GROUND ELECTRODE: Reduced quenching design produces outstanding ignitability, improved acceleration, fuel efficiency and durability
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • Outstanding Acceleration and High Fuel Efficiency: NGK Iridium IX spark plugs are engineered to deliver superior acceleration and enhance fuel efficiency, making them ideal for performance enthusiasts.
  • Extreme Ignitability and Anti-Fouling: These spark plugs offer exceptional ignitability and anti-fouling properties, ensuring reliable performance and longevity.
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Autolite Iridium – Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition (Part No.XP25)

Iridium XP Finewire Spark Plug: Improved Durability, More Focused Ignition

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$9.99
Our best spark plug! Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, the Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition for enhanced ignitability and performance. Features double Iridium-enhanced alloy technology center electrode for improved durability and wear resistance.

Product Features:
  • 0.6 mm finewire design improves ignitability
  • Patented V-trimmed platinum sidewire technology resists wear
  • OE equivalent design is engineered for every engine
  • Designed for better overall durability with virtually no gap erosion
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ACDelco – Premium Double Platinum Tip Copper Core Spark Plug: Long-Lasting Performance & Durability (Part No.41-905)

Premium Double Platinum Tip Copper Core Spark Plug: Long-Lasting Performance & Durability

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$9.79
ACDelco Professional Double Platinum Spark Plugs are premium aftermarket plugs, and are a high quality replacement for many vehicles on the road today. With a copper core and double platinum pads on the center electrode, these plugs are designed to deliver long-lasting performance. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.

Product Features:
  • One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life
  • Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system
  • Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Tapered Seat Design: The tapered seat type ensures a secure fit and optimal sealing in the engine.
  • High-Quality Aftermarket Replacement: Manufactured to meet high standards of fit, form, and function, making it a reliable replacement for many vehicles on the road today.
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Champion – Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RV17PMC4 (Part No.3018)

Platinum Power Spark Plug: Powerful Perfromance, OE Replacement, RV17PMC4

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$4.99
Champion Platinum Power spark plugs deliver powerful performance. Made from exclusive Heat-Active alloy, a fine-wire center electrode and V-trimmed ground electrode provides sharp spark focus.

Product Features:
  • 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
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Autolite – Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration (Part No.5145)

Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration

from

$2.99
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Guaranteed to deliver quick starts, good fuel economy and smooth acceleration, Autolite Copper Core spark plugs are designed to meet or exceed OES design requirements. Consider upgrading to Autolite Platinum, Double Platinum or Iridium XP plugs for improved engine performance. Copper core plugs are the industry standard.

Product Features:
  • Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)
  • Multi-rib insulator reduces danger of “flash-over”
  • One-piece terminal post adds strength
  • Resistor reduces radio frequency interference (RFI) and electrode erosion
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Motorcraft – Spark Plug (ASF42CF4) (Part No.SP-450-A)

Spark Plug (ASF42CF4)

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$6.79
Motorcraft Spark Plugs are original equipment on Ford Motor Company vehicles engineered to meet strict Ford engineering standards to provide original equipment performance and reliability. Delivering performance, reliability and confidence, Motorcraft spa

Product Features:
  • Motorcraft spark plugs are matched to specific engines to provide enhanced durability, eliminate misfires, reduce fuel consumption and optimize emissions.
  • Backed by Motorcraft’s Service Parts Warranty
  • Exact fit for Ford, Lincoln and Mercury vehicles
  • Resistant to oxidation and arc erosion.
  • Multi-rib insulator protects against misfire.
  • Service intervals of up to 100,000 miles.
  • Motorcraft Spark Plugs are designed with high quality materials to provide reliable performance for almost any application.
  • Motorcraft Spark Plugs are what was in the vehicle when it was manufactured
  • Motorcraft ignition components help prevent false check engine lights.
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Dorman – Help – Spark Plug Non-Foulers – 14mm Tapered Seat (Part No.42006)

Spark Plug Non-Foulers - 14mm Tapered Seat

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$6.99
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.

Product Features:
  • Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles
  • Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
  • Durable construction – made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Dorman – Help – Spark Plug Non-Foulers – 18mm Tapered Seat (Part No.42002)

Spark Plug Non-Foulers - 18mm Tapered Seat

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$9.99
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.

Product Features:
  • Direct replacement – this spark plug non fouler is designed for easy installation to protect spark plugs from fouling and damage on specified vehicles
  • Ideal solution – this non-fouler preserves spark plug life and is a reliable replacement for an original non-fouler that has failed due to corrosion
  • Durable construction – made from quality components to ensure reliable performance and a long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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1978 Ford Country Squire Spark Plugs

Maybe you’re in the middle of a full rebuild of that 1978 Ford Country Squire. Maybe you just need a couple of Spark Plugs. Either way, Advance Auto Parts has 24 different Spark Plugs in our inventory ranging from $2.79 to $153.99. That means you can find the exact parts or products you need to keep that 1978 Ford Country Squire running smoothly.

Spark Plugs are only as good as their brand. We stock 10 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Ford Country Squire. ACDelco, E3, and Autolite are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Spark Plugs for your 1978 Ford Country Squire, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 741 reviews in this category, some of the top rated parts include High-Performance Shorty Spark Plugs for Header Clearance with 4.9 stars and OE Series V-Power Nickel Spark Plug: V-Groove Tip Design, UR45 with 5.0 stars.

So if you’re in the market for aftermarket Spark Plugs to keep your 1978 Ford Country Squire rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Spark Plugs Brands To Make Your 1978 Ford Country Squire Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Ford Country Squire demands trusted brand parts and products to keep it running. Many trusted brands of Spark Plugs make up Advance Auto Parts’ inventory, and all are ready to help make your Country Squire the best it can be. Be sure to browse some of our top Spark Plugs brands and parts.

FAQs for 1978 Ford Country Squire Spark Plugs

What are the most purchased Spark Plugs for the 1978 Ford Country Squire?

Out of 24 Spark Plugs for the 1978 Ford Country Squire, the most popular in our inventory are:

What are the top-rated 1978 Ford Country Squire Spark Plugs?

Top-rated Spark Plugs for your 1978 Ford Country Squire based on customer reviews/ratings are:
High-Performance Shorty Spark Plugs for Header Clearance
from $52.99
(36)
High-Performance Shorty Spark Plugs for Header Clearance
“Perfect great plugs for my Build. Great service to THANK YOU!”