Ford M-400 Spark Plugs

Your One-Stop Shop For Trusted Ford M-400 Spark Plugs

If you’re in search of Ford M-400 Spark Plugs aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 9 Spark Plugs from top brands with prices ranging from $2.49 to $143.99.

Beyond great prices, we stock trusted brands manufacturing all types of Spark Plugs for your Ford M-400.

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 M-400 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 M-400 Spark Plugs

Champion – Copper Plus Spark Plug (RF14YC): Dependable Performance & Durability (Part No.21)

Copper Plus Spark Plug (RF14YC): Dependable Performance & Durability

from

$2.49
Copper Plus Spark Plug RF14YC delivers dependable performance and durability, making it a reliable choice for your vehicle’s ignition system. Featuring a copper core center electrode, it ensures precise heat control and enhanced conductivity, promoting longer life and consistent wear. The patented TinTac and ULTRASEAL coated shell provide superior corrosion resistance, safeguarding the plug against harsh conditions. Additionally, the SAC-9 semiconductor resistor effectively suppresses EMI and RFI, ensuring smooth engine operation without interference. Built to ISO and SAE Standards, this spark plug guarantees proven performance and compatibility with a wide range of vehicles. Whether you’re seeking improved ignition efficiency or extended durability, this spark plug offers exceptional value and reliability for your automotive needs.

Product Features:
  • Copper Plus – Dependable Performance.
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Patented TinTac and ULTRASEAL coated shell for maximum corrosion resistance
  • Patented SAC-9 semiconductor resistor for maximum EMI & RFI suppression
  • Built to ISO and SAE standards for proven performance
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ACDelco – Conventional Spark Plug (Part No.R83TS)

Conventional Spark Plug

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$3.69
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.

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
  • Nickel Alloy Electrode Tip: Designed with a nickel alloy center electrode tip, these spark plugs provide enhanced durability and consistent performance.
  • Outstanding Suppression Characteristics: These spark plugs offer excellent suppression characteristics, contributing to the overall reliability and efficiency of your vehicle’s engine.
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NGK – V-Power Nickel Spark Plug (WR5): Reliable Performance & Quick Starts (Part No.2438)

V-Power Nickel Spark Plug (WR5): Reliable Performance & Quick Starts

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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.

Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode with V-groove provides consistent performance
  • RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs
  • NGK’s OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
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Autolite – Platinum Spark Plug: Enhanced Durability & Improved Performance (Part No.AP45)

Platinum Spark Plug: Enhanced Durability & Improved Performance

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$4.99
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.

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.
  • Tapered Seat Type: Enhances overall performance and durability.
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Autolite – Copper Resistor Spark Plug: Quick Starts & Enhanced Durability (Part No.45)

Copper Resistor Spark Plug: Quick Starts & Enhanced Durability

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$4.29
Autolite Copper spark plugs are expertly crafted to ensure quick starts and reliable performance for your vehicle or application. 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 deliver extended life and durability. The high alumina multi-rib ceramic insulator enhances thermal conductivity and insulation, providing superior strength under demanding conditions. Designed with a corrosion-resistant nickel-plated shell, these spark plugs offer long-lasting durability. The tapered seat type and long projection center electrode design further optimize functionality, while the resistor ensures consistent performance. Engineered for good fuel economy, these spark plugs help you save on fuel costs without compromising on power or efficiency. With a standard-grade type and nickel tip materials, Autolite Copper spark plugs are a dependable choice for maintaining peak engine 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.
  • Good Fuel Economy: Engineered to optimize fuel efficiency, helping you save on fuel costs.
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Autolite – Double Platinum Spark Plug: Enhanced Durability & Performance (Part No.APP45)

Double Platinum Spark Plug: Enhanced Durability & Performance

from

$5.99
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, providing unmatched durability under high temperatures and pressure. The high alumina ceramic insulator optimizes thermal conductivity and dielectric strength, while the multi-rib insulator prevents flash-over for reliable operation. With a long projection center electrode and tapered seat type, this performance-grade spark plug is built to handle demanding conditions. Both the center and ground electrode tips are crafted from platinum, ensuring consistent ignition and enhanced efficiency. Designed to deliver superior functionality and durability, this spark plug is an excellent investment 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 tapered seat type and long projection center electrode to ensure reliable performance under demanding conditions.
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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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$10.99
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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Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040R)

Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set

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$73.99
These ACCEL wire sets are a true performance upgrade replacement for OE types. Efficient delivery of spark energy for a good price. Silicone boots with black wire contain zinc-plated steel terminals. Noise suppression core. Set contains 8 plug wires with coil lead.

Product Features:
  • 7mm And 8mm High Gloss Silicone Jacket
  • 450° F Rated Silicone Jacket
  • Stainless Steel Plug Terminals
  • RFI Suppression For Street Driven Applications
  • Custom-fit Universal And Import Coverage
  • High-strength Fiberglass Braid Construction
  • Pre And Post HEI Vehicles
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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

from

$143.99
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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Spark Plugs Brands You Can Trust For Your Ford M-400

7 trusted brands of Spark Plugs line our shelves, ready to help keep your Ford M-400 running smooth. Below are some of the most popular brands and their top Spark Plugs offerings:

Most Purchased Ford M-400 Spark Plugs from Autolite

When you buy the most frequently purchased Autolite brand Spark Plugs, you can be confident it will be the right part for your Ford M-400. Here are the Autolite Spark Plugs Advanced Auto customers buy the most:

FAQs for Ford M-400 Spark Plugs

What are the most purchased Spark Plugs for the Ford M-400?

Out of 9 Spark Plugs for the Ford M-400, the most popular in our inventory are:
Spark Plug Non-Foulers - 18mm Tapered Seat
from $10.99
(8)
Spark Plug Non-Foulers – 18mm Tapered Seat
Spark Plug Non-Foulers
Double Platinum Spark Plug: Enhanced Durability & Performance
from $5.99
This product is not rated
Double Platinum Spark Plug: Enhanced Durability & Performance
Spark Plugs

What are the top-rated Ford M-400 Spark Plugs?

Top-rated Spark Plugs for your Ford M-400 based on customer reviews/ratings are:
Wire Set; Super Conductor; 8-cyl. Multi-Angle Plug; Socket/HEI
from $143.99
(2)
Wire Set; Super Conductor; 8-cyl. Multi-Angle Plug; Socket/HEI
“I Bought This MSD Plug Wire Set For My Ford 390 FE Engine. These MSD Wires Are Great. I Bought The Universal Set So I Could Tailor The Size For A Nea”
Conventional Spark Plug
from $3.69
(2)
Conventional Spark Plug
“Before changing spark plugs, my engine idled rough and appeared to miss on the road. Changing to these plugs made the idle smooth and the ride nice.”