Best Spark Plugs For Big Block 454: image
Best Overall

  • Brand:ACDelco
  • Core Material:Copper
  • Top Material Type:Nickel
  • Vehicle Service Type:Car

Value for Money

  • Brand:ACCEL
  • Core Material:Copper
  • Top Material Type:Alloy Steel

Most Discussed

  • Brand:Autolite
  • Core Material:Iridium
  • Top Material Type:Nickel

Best Spark Plugs For Big Block 454

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Top 8 Best Spark Plugs For Big Block 454

1

Autolite XP26-4PK Iridium XP Spark Plug, Pack of 4

24 ratings | 3 offers | 24 Reviews
Price: $14.45$34.78
Why we chose it
  • Iridium-enhanced 0.6mm finewire design for optimal durability and performance
  • Better overall ignitability and optimum performance
  • Limited lifetime warranty
  • V-trimmed ground electrode for improved ignitability
  • Platinum protected ground wire for maximum efficiency in all ignition types
Autolite XP26-4PK Iridium XP Spark Plug, Pack of 4: image
90%
customers recommend this product
4.5/ 5
Mileage5
Value for money4.7
Top Pick
2

ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1)

722 ratings | 22 offers | 722 Reviews
Price: $1.69$11.95
Why we chose it
  • Available for use in Marine applications
  • Black Onyx coating helps reduce corrosion
  • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
  • Copper core provides great heat transfer and helps maximize plug durability
  • Ribbed suppressor seal extends resistance and helps prevent spark flash over and misfires
ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1): image
94%
customers recommend this product
4.7/ 5
Mileage4.4
Longevity4.3
Value for money4.2
Easy to install3.5
3

ACCEL 8199 HP Copper Spark Plug – Shorty

358 ratings | 28 offers | 358 Reviews
Price: $40.81$64.15
Why we chose it
  • Ideal for use in cramped spaces
  • Instant throttle response and better fuel economy
  • Pack of eight
  • Less fouling flame dissipation and misfire
  • Deliver significantly more power at high RPM
ACCEL 8199 HP Copper Spark Plug - Shorty: image
92%
customers recommend this product
4.6/ 5
Mileage4.6
Value for money3.9
4
Why we chose it
    NGK V Power Spark Plug UR4 (8 Pack) for CHEVROLET K20 1980-1980 7.4L/454: image
    100%
    customers recommend this product
    5/ 5
    5

    ACDelco GM Original Equipment R43XLS Conventional Spark Plug

    34 ratings | 18 offers | 34 Reviews
    Price: $2.84$9.98
    Why we chose it
    • GM regularly updates production and service part designs to integrate new materials and technologies
    • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
    • Black Onyx coating helps reduce corrosion
    • Copper core provides great heat transfer and helps maximize plug durability
    • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
    • Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over’ and misfires
    • Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
    • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
    • Available for use in Marine applications
    ACDelco GM Original Equipment R43XLS Conventional Spark Plug: image
    90%
    customers recommend this product
    4.5/ 5
    6
    Why we chose it
    • Ribbed Suppressor Seal, which extends resistance and prevents spark flash over and misfire
    • Black Onyx Coating helps prevent corrosion
    • Available for use in Marine applications
    • Nickel-chrome alloy sheathing to help prevent corrosion on center electrode
    • Copper Core, the thermal properties of copper provide great heat transfer and increases plug durability
    ACDelco Professional R43XL Conventional Spark Plug (Pack of 1): image
    100%
    customers recommend this product
    5/ 5
    7

    Autolite 403 Copper Resistor Spark Plug, Pack of 1

    2 ratings | 12 offers | 2 Reviews
    Price: $1.99$13.95
    Why we chose it
    • Cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength
    • Resistor reduces radio frequency interference (RFI) and electrode erosion
    • Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof
    • Full copper core electrode provides better performance in all conditions
    • Multi-rib insulator reduces danger of “flash-over”
    Autolite 403 Copper Resistor Spark Plug, Pack of 1: image
    88%
    customers recommend this product
    4.4/ 5
    8

    Autolite Box of 4 Genuine 403 Copper Resistor Spark Plugs

    4 ratings | 2 offers | 4 Reviews
    Price: $13.96$16.86
    Why we chose it
    • Brand New Box of 4 Autolite Spark Plugs
    • Full copper core electrode improves heat transfer and optimizes plug life
    • Genuine Autolite Part # 403 Copper-glass seal bonded insulator, terminal post, and center electrode provide a tight seal that is 100 percent leak-proof Multi-rib insulator reduces danger of “flash-over” to prevent misfires Full copper core electrode improves heat transfer and optimizes plug life Copper core center electrode provides higher thermal conductivity Features high alumina ceramic for high dielectric strength and steel shell for installation robustness
    • Copper core center electrode provides higher thermal conductivity
    • Multi-rib insulator reduces danger of “flash-over” to prevent misfires
    Autolite Box of 4 Genuine 403 Copper Resistor Spark Plugs: image
    100%
    customers recommend this product
    5/ 5
    Top Pick
    ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1)
    ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are the high quality replacement ideal 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.
    Ranking the Brands
    Autolite: 37.50%
    ACDelco: 37.50%
    ACCEL: 12.50%
    NGK: 12.50%

    Comparison Table

    Сomparison: Autolite XP26-4PK Iridium XP Spark Plug, Pack of 4: imageСomparison: ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1): imageСomparison: ACCEL 8199 HP Copper Spark Plug - Shorty: imageСomparison: NGK V Power Spark Plug UR4 (8 Pack) for CHEVROLET K20 1980-1980 7.4L/454: imageСomparison: ACDelco GM Original Equipment R43XLS Conventional Spark Plug: imageСomparison: ACDelco Professional R43XL Conventional Spark Plug (Pack of 1): imageСomparison: Autolite 403 Copper Resistor Spark Plug, Pack of 1: imageСomparison: Autolite Box of 4 Genuine 403 Copper Resistor Spark Plugs: image
    Autolite XP26-4PK Iridium XP Spark Plug, Pack of 4ACDelco Professional R44LTS6 Conventional Spark Plug (Pack of 1)ACCEL 8199 HP Copper Spark Plug – ShortyNGK V Power Spark Plug UR4 (8 Pack) for CHEVROLET K20 1980-1980 7.4L/454ACDelco GM Original Equipment R43XLS Conventional Spark PlugACDelco Professional R43XL Conventional Spark Plug (Pack of 1)Autolite 403 Copper Resistor Spark Plug, Pack of 1Autolite Box of 4 Genuine 403 Copper Resistor Spark Plugs
    BrandAutoliteACDelcoACCELNGKACDelcoACDelcoAutoliteAutolite
    Core MaterialIridiumCopperCopperCopperCopperCopperCopperCopper
    Top Material TypeNickelNickelAlloy SteelNickelNickelNickelAlloy SteelAlloy Steel, Ceramic
    ManufacturerAutoliteACDelcoACCELACDelcoACDelcoAutoliteAutolite
    Item Weight7 ounces6.4 ounces12.7 ounces0.8 ounces6.4 ounces2.08 ounces
    Product Dimensions1 x 1 x 3.4 inches4.4 x 3.8 x 1.7 inches4.4 x 3.8 x 1.7 inches4.4 x 3.8 x 1.7 inches1 x 1 x 3.5 inches
    Country of OriginMexicoMexicoMexicoMexico
    ExteriorChromeChromeMachined
    Is Discontinued By ManufacturerYesNoYesYesNo

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