1978 GMC K25 Spark Plugs
More 1978 GMC K25 Spark Plugs
Find your specific 1978 GMC K25 original or aftermarket Spark Plugs below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.
Essential 1978 GMC K25 Spark Plugs
Motorcraft – Spark Plug (Part No.SP-425-X)
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$5.29
The Motorcraft Spark Plug is a high-quality replacement spark plug designed to provide reliable performance and long-lasting durability for your vehicle. It features a nickel alloy electrode that provides superior wear resistance and a platinum tip that ensures consistent performance over the life of the plug. The Motorcraft Spark Plug also has a ribbed insulator design that helps prevent misfires and a copper core that provides efficient heat transfer. It is designed to meet or exceed OEM specifications and is compatible with a wide range of vehicles. Whether you’re looking to replace worn-out spark plugs or upgrade to a higher-quality option, the Motorcraft Spark Plug is an excellent choice that will help keep your engine running smoothly and efficiently.
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NGK – Iridium IX Spark Plug: Single Iridium Fine Wire, YR55IX (Part No.7588)
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$9.99
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:
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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
Champion – Copper Plus Spark Plug: Dependable Performance, OE Replacement, RV17YC (Part No.25)
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$3.49
Dependable performance. This Champion® spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.
Product Features:
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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
Champion – Copper Plus Spark Plug: Dependable Performance, OE Replacement, RV15YC4 (Part No.18)
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$3.49
Dependable Performance, OE Replacement, RV15YC4. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear. The Copper Plus design ensures dependable performance and durability, while the copper core center electrode allows for accurate control of heat range, extending the plug’s life. Built to ISO and SAE standards, it offers superior corrosion resistance and proven performance. The nickel center electrode tip and tapered seat type further enhance its reliability, making it an excellent choice for maintaining your engine’s efficiency.
Product Features:
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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
- Enhanced Conductivity and Heat Control: The Champion Copper Plus Spark Plug features a copper core electrode that provides increased conductivity and heat control, ensuring good overall wear and extending the plug’s life.
- Reliable Nickel Center Electrode Tip: Featuring a nickel center electrode tip and a tapered seat type, this spark plug ensures enhanced reliability and optimal engine performance.
ACDelco – Conventional Nickel Tip Copper Core Spark Plug: Enhances Heat Transfer & Durability (Part No.R44T)
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$4.99
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. 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:
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Product Features:
- Black Onyx coating helps reduce corrosion
- Copper core provides great heat transfer and helps maximize plug durability
- 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 Center Electrode Tip: Provides efficient and consistent spark for optimal engine performance.
- Outstanding Suppression Characteristics: Ensures reliable performance by reducing radio frequency interference.
- Tapered Seat Type: Designed for a secure fit and optimal function in various engine types.
Autolite – Platinum Spark Plug: Fires Cleaner, Easier Starts, Quicker Acceleration (Part No.AP26)
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$4.79
Autolite has over 100 years of engineering experience and has sold over 11 billion plugs. Designed and engineered in the USA, Autolite Platinum spark plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability. Consider upgrading to Autolite Double Platinum or Iridium XP spark plugs for increased performance.
Product Features:
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Product Features:
- High nickel alloy side electrode maintains precise gap
- Full platinum tip assures virtually no gap erosion for long life
- Necked-down center electrode fires quicker, cleaner with less voltage for easier starts, quicker acceleration and improved fuel economy (as compared to standard plugs)
ACDelco – Premium Double Platinum Tip Copper Core Spark Plug: Long-Lasting Performance & Durability (Part No.41-905)
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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:
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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.
NGK – G-Power Spark Plug: Single Platinum Tip Design, UR4GP (Part No.2869)
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$6.29
NGK G-Power Platinum spark plugs are the best single platinum spark plugs at an economical price. G-Power plugs feature a fine wire platinum center electrode and a trapezoidal cut ground electrode that offers increased durability, improved fuel efficiency, lower emissions, faster starts and quicker acceleration over conventional nickel spark plugs. An excellent upgrade for vehicles which used nickel alloy spark plugs originally. For better performance consider upgrading to a NGK Iridium IX plug. For even greater performance consider upgrading to a NGK RUTHENIUM HX plug.
Product Features:
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Product Features:
- SINGLE PLATINUM TIP: Fine wire 0.6 millimeter platinum tip center electrode ensures improved durability and a consistently stable spark
- PLATINUM ALLOY: G-Power platinum provides exceptional value with increased performance and longer service intervals than factory nickel plugs
- TRAPEZOIDAL CUT GROUND ELECTRODE: Reduces quenching design produces improved ignitability and 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
- RECOMMENDED USAGE: Lower cost alternative to double precious metal spark plugs or as an upgrade to OE nickel alloy spark plugs
- Trapezoidal Cut Ground Electrode: Improves fuel efficiency, lowers emissions, and provides faster starts and quicker acceleration.
- Economical Upgrade: Ideal for vehicles originally equipped with nickel alloy spark plugs, offering a cost-effective performance boost.
- Enhanced Durability: Designed to last longer than traditional nickel spark plugs, reducing the need for frequent replacements.
ACDelco – Copper Core Spark Plug: Original Equipment Replacement (Part No.R45TS)
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$4.99
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.
Product Features:
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Product Features:
- GM regularly updates production and service part designs to integrate new materials and technologies
- High-Quality Copper Core: Designed with high-quality copper cores for reliable and efficient performance.
- Nickel Center Electrode Tip: Features a nickel center electrode tip for enhanced durability and performance.
- Outstanding Suppression Characteristics: Delivers reliable performance with excellent suppression characteristics.
- Versatile Applications: Providing high-quality replacement options for various vehicles.
Dorman – Help – Spark Plug Non-Foulers – 14mm Tapered Seat (Part No.42006)
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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:
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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
Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040R)
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$65.99
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:
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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
Accel – Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set (Part No.4040)
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$63.99
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:
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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
MSD Ignition – Wire Set; Super Conductor; Multi-Angle Plug; HEI Cap (Part No.31189)
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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:
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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
Popular 1978 GMC K25 Spark Plugs Categories
1978 GMC K25 Spark Plugs
Maybe you’re in the middle of a full rebuild of that 1978 GMC K25. Maybe you just need a couple of Spark Plugs. Either way, Advance Auto Parts has 43 different Spark Plugs in our inventory ranging from $2.49 to $129.99. That means you can find the exact parts or products you need to keep that 1978 GMC K25 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 GMC K25. ACDelco, NGK, and E3 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 GMC K25, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 2,376 reviews in this category, some of the top rated parts include High-Performance Shorty Spark Plugs for Header Clearance with 4.9 stars and Universal Fit Super Stock 8mm Suppression; Spark Plug Wire Set with 3.0 stars.
So if you’re in the market for aftermarket Spark Plugs to keep your 1978 GMC K25 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 GMC K25 Last
Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 GMC K25 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 K25 the best it can be. Be sure to browse some of our top Spark Plugs brands and parts.
Popular Champion Spark Plugs
We carry Champion parts in our stock across Spark Plugs categories, plus more. For a 1978 GMC K25, our most popular Champion Spark Plugs include:
Top 1978 GMC K25 Spark Plugs from E3
E3 products are another trusted brand when it comes to Spark Plugs for your 1978 GMC K25. Popular E3 parts include:
FAQs for 1978 GMC K25 Spark Plugs
What are the most purchased Spark Plugs for the 1978 GMC K25?
Out of 43 Spark Plugs for the 1978 GMC K25, the most popular in our inventory are:
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$4.99
(32)
Conventional Nickel Tip Copper Core Spark Plug: Enhances Heat Transfer & Durability
Spark Plugs
What are the top-rated 1978 GMC K25 Spark Plugs?
Top-rated Spark Plugs for your 1978 GMC K25 based on customer reviews/ratings are:
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$52.99
(36)
High-Performance Shorty Spark Plugs for Header Clearance
“quick easy…in and right out”
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$3.49
(16)
Copper Spark Plug: Delivers Quick Starts, Good Fuel Economy, Smooth Acceleration
“Working great”
