Best Spark Plugs For 8.1 Vortec: image
Editor's Pick

Of ACDelco 41-101.1 order 6 Pieces. The product is made from the highest quality stainless steel and comes with a limited lifetime warranty. It has been tested to ensure that it does not cause any damage to the environment. Notably, this is the first time an ACDelco product has been tested in India.

Value for Money

Brisk Silver Racing plugs have a 90-day warranty and are compatible with the following engines: 2011 Ford Mustang 5.0L, 6.1L, 6.2L, 5.7L, 6.0L, 6.7L, 7.0L, 8.0L, 7.3L, 7.5L, 5.5L, 5.2L, 5.3L, 4.6L, 5.0L, 5.4L, 5.0L, 5.6L, 6.3L, 5.0L, 5.1L, 5.0L.

Honorable Mention

DENSO patented 360-degree laser welding process, which ensures exceptional quality bond and structural strength. The Iridium Center Electrode is the world’s smallest electrode with a diameter of 0.4 mm, providing maximum power and less heat quenching. It has been used since its inception in 1984. The technology was first developed by German company DENSO in 1995. The device can be operated using either an external battery or a rechargeable battery pack. The plug is designed to last for 10 years.

Best Spark Plugs For 8.1 Vortec

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Top 8 Best Spark Plugs For 8.1 Vortec

1

Autolite XP5701-4PK Iridium XP Spark Plug, Pack of 4

23 ratings | 5 offers | 23 Reviews
Price: $10.18$30.85
Why we chose it
  • Iridium-enhanced platinum alloy 0.6mm fine wire center electrode for improved ignitibility performance
  • Fit type: Vehicle Specific
  • Designed for better overall durability with virtually no gap erosion for longer plug life
  • OE equivalent design is engineered for every engine to ensure the right plug for your vehicle
  • Patented V-trimmed platinum side wire technology resists wear
Autolite XP5701-4PK Iridium XP Spark Plug, Pack of 4: image
84%
customers recommend this product
4.2/ 5
Value for money2.3
Mileage2.3
2
Why we chose it
  • RELY ON QUALITY IGNITION COMPONENTS: From their start in 1936 through today, the NGK product line is proof of their dedication to innovation, performance, and quality. In order to deliver high-quality spark plugs and oxygen sensors to the automotive community, NGK has partnered with auto manufacturers to engineer automotive parts that fit both the vehicles of today and of the future
  • TRUST IN NGK NTK: Explore components built by the world leader in the design of spark plugs and oxygen sensors. Their attention to performance excellence is what has differentiated them from the competition and allowed them to be the number one supplier of spark plugs and oxygen sensors
  • This 8 pack NGK Iridium IX Spark Plug is compatible with Chevrolet Silverado 2500 HD 2006, 2005, 2004, 2003, 2002, 2001 8.1L V8 and is perfect for a tune up or performance upgrade.
  • REDUCE EMISSIONS AND MISFIRES: This tried-and-true Spark Plug boosts performance, reduces emissions, and enables better fuel economy so that your engine runs at its best. The durable shell reliably protects the spark plug from corrosion, ensuring long-lasting sparking capabilities. The center and ground electrodes promote sharper spark focus for fewer misfires
  • IMPROVE IGNITION AND SPARK EFFICIENCY: This Spark Plug employs advanced center and ground electrodes to produce complete and efficient combustion and deliver an outstanding spark for faster, stronger, and more powerful combustion over the life of the spark plug. The corrosion-resistant center and ground electrodes minimize spark gap growth and provide greater ignitability and spark efficiency
8 pc NGK Iridium IX Spark Plugs compatible with Chevrolet Silverado 2500 HD 8.1L V8 2001-2006 Ignition Wire Secondary: image
100%
customers recommend this product
5/ 5
Top Pick
3

ACDelco # 41-101 Professional Iridium Spark Plug — 6 Pcs NEW

227 ratings | 11 offers | 227 Reviews
Price: $39.99$79.86
Why we chose it
  • ACDelco 41-101
  • 1order 6 Pieces
  • FREE SHIPPING For This Item
  • Iridium
  • Better Performance
ACDelco # 41-101 Professional Iridium Spark Plug --- 6 Pcs NEW: image
94%
customers recommend this product
4.7/ 5
Value for money4.7
Longevity4.5
Mileage4.5
4
Why we chose it
  • 90 DAY WARRANTY Performance/Custom-Silver Tip Electrode
Racing Spark Plug (SET OF 8) GENUINE BRISK RR12S RACING PREMIUM SILVER TIP RACING SPARK PLUGS RR-12S NEW: image
98%
customers recommend this product
4.9/ 5
5

NGK LKAR7AHX-S Spark Plug NGK Ruthenium HX Spark Plug

6 ratings | 13 offers | 6 Reviews
Price: $15.98$27.04
Why we chose it
  • Package Dimensions: 2.209 cms (L) x 2.489 cms (W) x 9.499 cms (H)
  • Package Quantity 1
  • Country of Origin: Japan
  • Product Type: Auto Part
NGK LKAR7AHX-S Spark Plug NGK Ruthenium HX Spark Plug: image
100%
customers recommend this product
5/ 5
6

Denso (4702) IK20TT Iridium TT Spark Plug, (Pack of 1)

380 ratings | 8 offers | 380 Reviews
Price: $8.01$12.47
Why we chose it
  • DENSO patented 360 degree laser welding process, ensuring exceptional quality bond and structural strength with the iridium center electrode.
  • Larger spark translates to more power and superior fuel economy
  • 0.7 mm needle tip ground electrode, promotes higher spark energy and less heat quenching
  • 0.7mm Platinum Ground Electrode
  • 0.4 mm iridium center electrode, world’s smallest diameter that maximizes firing potential
  • 0.4mm Iridium Center Electrode
  • Denso # 4702
  • DENSO patented 360 degree laser welding process, ensuring exceptional quality bond and structural strength with the iridium center electrode.
Denso (4702) IK20TT Iridium TT Spark Plug, (Pack of 1): image
94%
customers recommend this product
4.7/ 5
Longevity4.6
Value for money4.5
Mileage4.4
7

Denso (4703) IKH16TT Iridium TT Spark Plug, (Pack of 1)

105 ratings | 7 offers | 105 Reviews
Price: $9.3$12.79
Why we chose it
  • Denso # 4703
  • 0.4mm Iridium Center Electrode
  • Larger spark translates to more power and superior fuel economy
  • 0.4 mm iridium center electrode, world’s smallest diameter that maximizes firing potential
  • 0.7mm Platinum Ground Electrode
Denso (4703) IKH16TT Iridium TT Spark Plug, (Pack of 1): image
92%
customers recommend this product
4.6/ 5
Mileage4.8
Longevity4.7
Value for money4.4
8
Why we chose it
    Set (4pcs) Denso Iridium TT Spark Plugs Stock 4701 Iridium Core .039"(1.0mm) Gap Size IK16TT: image
    98%
    customers recommend this product
    4.9/ 5
    Ranking the Brands
    Autolite: 12.50%
    Sixity Auto: 12.50%
    ACDelco: 12.50%
    BRISK USA: 12.50%
    NGK: 12.50%
    Denso: 37.50%

    Comparison Table

    Сomparison: Autolite XP5701-4PK Iridium XP Spark Plug, Pack of 4: imageСomparison: 8 pc NGK Iridium IX Spark Plugs compatible with Chevrolet Silverado 2500 HD 8.1L V8 2001-2006 Ignition Wire Secondary: imageСomparison: ACDelco # 41-101 Professional Iridium Spark Plug --- 6 Pcs NEW: imageСomparison: Racing Spark Plug (SET OF 8) GENUINE BRISK RR12S RACING PREMIUM SILVER TIP RACING SPARK PLUGS RR-12S NEW: imageСomparison: NGK LKAR7AHX-S Spark Plug NGK Ruthenium HX Spark Plug: imageСomparison: Denso (4702) IK20TT Iridium TT Spark Plug, (Pack of 1): imageСomparison: Denso (4703) IKH16TT Iridium TT Spark Plug, (Pack of 1): imageСomparison: Set (4pcs) Denso Iridium TT Spark Plugs Stock 4701 Iridium Core .039"(1.0mm) Gap Size IK16TT: image
    Autolite XP5701-4PK Iridium XP Spark Plug, Pack of 48 pc NGK Iridium IX Spark Plugs compatible with Chevrolet Silverado 2500 HD 8.1L V8 2001-2006 Ignition Wire SecondaryACDelco # 41-101 Professional Iridium Spark Plug — 6 Pcs NEWRacing Spark Plug (SET OF 8) GENUINE BRISK RR12S RACING PREMIUM SILVER TIP RACING SPARK PLUGS RR-12S NEWNGK LKAR7AHX-S Spark Plug NGK Ruthenium HX Spark PlugDenso (4702) IK20TT Iridium TT Spark Plug, (Pack of 1)Denso (4703) IKH16TT Iridium TT Spark Plug, (Pack of 1)Set (4pcs) Denso Iridium TT Spark Plugs Stock 4701 Iridium Core .039″(1.0mm) Gap Size IK16TT
    BrandAutoliteSixity AutoACDelcoBRISK USANGKDensoDensoDenso
    Core MaterialIridiumIridiumIridium
    Top Material TypeNickelMetalNickel
    ManufacturerFRAMSixity AutoIridiumBRISK USANGKDensoDenso
    Item Weight1.76 ounces11.5 ounces10.4 ounces1.44 ounces1.44 ounces1.44 ounces7.2 ounces
    Product Dimensions3.38 x 1 x 1 inches3.31 x 0.94 x 6.64 inches31.5 x 1 x 10.6 inches3.35 x 0.98 x 0.98 inches3.66 x 0.98 x 0.98 inches40.2 x 46.08 x 11.52 inches
    Country of OriginMexicoUSAUSA
    ExteriorChromeMachinedPainted
    Is Discontinued By ManufacturerNoNoNo

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