Best Spark Plugs For 6.0 Vortec: image
Top Pick

Iridium spark plugs are a high-quality replacement for many vehicles on the road today. They are made from a special alloy of nickel and titanium, which is used to prevent carbon deposits on the plug’s surface. The plugs have a low melting point and provide excellent wear resistance. It has been tested under various conditions including extreme cold starts and overheated engines. The plugs are available in black or white versions. Notably, these products are sold at an affordable price.

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DENSO, one of the world’s largest automotive parts suppliers, has launched its First Time Fit product line. The products include air filters, radiators, condensers, and windshield wiper blades among others. The company is also working on developing new materials like titanium and aluminium. It plans to introduce more advanced technologies in the near future. Notably, DENSO has been manufacturing over 100 million parts worldwide.

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DENSO, which is known for its high-performance ignition coils, has extended its First Time Fit product line to include parts with longer life. The products are available in four sizes and weights from 0.025 kg to 1.0 kg. The company also offers free shipping on all orders over $99 (over?100). It will be available in other sizes as well. Notably, DENSO’s first vehicle was launched in 2015.

Best Spark Plugs For 6.0 Vortec

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Top 10 Best Spark Plugs For 6.0 Vortec

1

4 PCS NEW — DENSO # 5343 IRIDIUM Power Spark Plugs — IKH16

160 ratings | 7 offers | 160 Reviews
Price: $30.07$34.71
Why we chose it
  • DENSO 5343
  • 1order 4 Pieces
4 PCS NEW -- DENSO # 5343 IRIDIUM Power Spark Plugs -- IKH16: image
90%
customers recommend this product
4.5/ 5
Easy to install5
Longevity4.5
Value for money4.3
Mileage4.1
2
Why we chose it
  • 1order 4 Pieces
  • Better Performance
  • DENSO 5358
  • FREE SHIPPING For This Item
  • IRIDIUM POWER
DENSO # 5358 IRIDIUM Power Spark Plugs -- IK20L ----- 4 PCS NEW: image
94%
customers recommend this product
4.7/ 5
Value for money4.3
Longevity4.2
Mileage4.1
3
Why we chose it
  • DENSO 3461
  • 1order 6 Pieces
DENSO # 3461 IRIDIUM LONG LIFE Spark Plugs -- SXU22HCR11S ----- 6 PCSNEW: image
92%
customers recommend this product
4.6/ 5
Longevity4.5
Value for money4.5
Mileage4.3
4
Why we chose it
  • Iridium LONG LIFE
  • FREE SHIPPING to anywhere IN USA and territories For This Item
  • DENSO 3417
  • 1order 4 Pieces
DENSO # 3417 Iridium LONG LIFE Spark Plugs - SK16HR11-4 PCS NEW: image
92%
customers recommend this product
4.6/ 5
Longevity5
Easy to install4.9
Value for money4.5
Mileage4.2
5

Autolite AP5325-4PK Platinum Spark Plug, 4 Pack

800 ratings | 2 offers | 800 Reviews
Price: $12.01$12.4
Why we chose it
  • Full platinum tip ensures virtually no gap erosion for long plug life
  • Platinum alloy pad on ground electrode provides extended durability and service life and platinum-to-platinum firing
  • Yttrium enhanced, high nickel alloy side electrode maintains precise gap to increase plug life
  • Nickel-plated steel shell for long-life corrosion resistance
  • Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts, quicker acceleration, and improved fuel economy
Autolite AP5325-4PK Platinum Spark Plug, 4 Pack: image
92%
customers recommend this product
4.6/ 5
Easy to install4.8
Value for money4.6
Longevity4.6
Mileage4.3
6

Autolite APP3924-4PK Double Platinum Spark Plug, 4 Pack

114 ratings | 13 offers | 114 Reviews
Price: $12.99$41.64
Why we chose it
  • works to optimize engine performance for a longer life and improved fuel economy
  • high nickel alloy side electrode maintains precise gap
  • necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration
  • Fit type: Vehicle Specific
  • full platinum tips ensure virtually no gap erosion
  • full copper core electrode provides better performance in all conditions
Autolite APP3924-4PK Double Platinum Spark Plug, 4 Pack: image
92%
customers recommend this product
4.6/ 5
Mileage4.8
Value for money4.7
Longevity4.6
7

ACDelco GM Original Equipment 41-109 Iridium Spark Plug

6 ratings | 2 offers | 6 Reviews
Price: $8.99$19.12
Why we chose it
  • ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
  • Iridium allows for small, efficient electrode designs for reliable cold starting and quick acceleration
  • Iridium offers excellent engine idle stability and smooth performance
  • GM regularly updates production and service part designs to integrate new materials and technologies
  • Suppressor seal meters spark energy for long electrode life and helps prevent combustion leakage
  • One piece suppressor seal helps block radio frequencies that can affect vehicle electronics
  • Iridium fine-wire electrode helps burn away carbon deposits on the tip of the plug as they form
  • Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
  • GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
ACDelco GM Original Equipment 41-109 Iridium Spark Plug: image
68%
customers recommend this product
3.4/ 5
8

Autolite APP3923-4PK Double Platinum Spark Plug, Pack of 4

77 ratings | 14 offers | 77 Reviews
Price: $17.35$40.12
Why we chose it
  • High nickel alloy side electrode maintains precise gap
  • Fit type: Vehicle Specific
  • Full copper core electrode provides better performance in all conditions
  • Full platinum tips ensure virtually no gap erosion
  • Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration
  • Works to optimize engine performance for a longer life and improved fuel economy
Autolite APP3923-4PK Double Platinum Spark Plug, Pack of 4: image
92%
customers recommend this product
4.6/ 5
Value for money5
Mileage5
9

Autolite APP5263-4PK Double Platinum Spark Plug, Pack of 4

84 ratings | 6 offers | 84 Reviews
Price: $8.99$28.56
Why we chose it
  • Full platinum tips ensure virtually no gap erosion
  • Necked-down center electrode fires quicker and cleaner, with less voltage for easier starts and quicker acceleration
  • Full copper core electrode provides better performance in all conditions
  • High nickel alloy side electrode maintains precise gap
  • Fit type: Vehicle Specific
  • Works to optimize engine performance for a longer life and improved fuel economy
Autolite APP5263-4PK Double Platinum Spark Plug, Pack of 4: image
94%
customers recommend this product
4.7/ 5
Value for money4.2
Mileage4.2
Top Pick
10

ACDelco GM Original Equipment 41-103 Iridium Spark Plug

926 ratings | 26 offers | 926 Reviews
Price: $6.78$25.51
Why we chose it
  • Iridium fine wire electrode helps burn away carbon deposits on the tip of the plug as they form
  • Iridium allows for small, efficient electrode designs for reliable cold starting and quick acceleration
  • Iridium offers excellent engine idle stability and smooth performance
ACDelco GM Original Equipment 41-103 Iridium Spark Plug: image
96%
customers recommend this product
4.8/ 5
Value for money4.8
Easy to install4.7
Mileage4.7
Longevity3.6
Top Pick
ACDelco GM Original Equipment 41-103 Iridium Spark Plug
ACDelco Professional Iridium Spark Plugs are the high quality replacement ideal for many vehicles on the road today. They are our latest in spark plug technology and an exact replacement for your vehicleâs original components. Iridium composition provides a high melting point and great strength, and provides excellent wear resistance and durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.
Ranking the Brands
Denso: 40.00%
Autolite: 40.00%
ACDelco: 20.00%

Comparison Table

Сomparison: 4 PCS NEW -- DENSO # 5343 IRIDIUM Power Spark Plugs -- IKH16: imageСomparison: DENSO # 5358 IRIDIUM Power Spark Plugs -- IK20L ----- 4 PCS NEW: imageСomparison: DENSO # 3461 IRIDIUM LONG LIFE Spark Plugs -- SXU22HCR11S ----- 6 PCSNEW: imageСomparison: DENSO # 3417 Iridium LONG LIFE Spark Plugs - SK16HR11-4 PCS NEW: imageСomparison: Autolite AP5325-4PK Platinum Spark Plug, 4 Pack: imageСomparison: Autolite APP3924-4PK Double Platinum Spark Plug, 4 Pack: imageСomparison: ACDelco GM Original Equipment 41-109 Iridium Spark Plug: imageСomparison: Autolite APP3923-4PK Double Platinum Spark Plug, Pack of 4: imageСomparison: Autolite APP5263-4PK Double Platinum Spark Plug, Pack of 4: imageСomparison: ACDelco GM Original Equipment 41-103 Iridium Spark Plug: image
4 PCS NEW — DENSO # 5343 IRIDIUM Power Spark Plugs — IKH16DENSO # 5358 IRIDIUM Power Spark Plugs — IK20L —– 4 PCS NEWDENSO # 3461 IRIDIUM LONG LIFE Spark Plugs — SXU22HCR11S —– 6 PCSNEWDENSO # 3417 Iridium LONG LIFE Spark Plugs – SK16HR11-4 PCS NEWAutolite AP5325-4PK Platinum Spark Plug, 4 PackAutolite APP3924-4PK Double Platinum Spark Plug, 4 PackACDelco GM Original Equipment 41-109 Iridium Spark PlugAutolite APP3923-4PK Double Platinum Spark Plug, Pack of 4Autolite APP5263-4PK Double Platinum Spark Plug, Pack of 4ACDelco GM Original Equipment 41-103 Iridium Spark Plug
ManufacturerDenso Sales California, Inc.Denso Sales California, Inc.Denso Sales California, Inc.DensoAutoliteAutoliteACDelcoFRAMFRAMACDelco
BrandDensoDensoDensoDensoAutoliteAutoliteACDelcoAutoliteAutoliteACDelco
Item Weight7.7 ounces7 ounces10.3 ounces0.16 ounces8 ounces7 ounces2.39 ounces3.98 ounces7.8 ounces1.44 ounces
Product Dimensions3.62 x 3.84 x 0.96 inches3.62 x 3.43 x 3.84 inches3.62 x 5.76 x 0.96 inches3.62 x 3.84 x 0.96 inches3.38 x 1 x 1 inches5 x 1 x 5 inches3.7 x 3.1 x 0.9 inches6.7 x 3.9 x 1 inches
Is Discontinued By ManufacturerNoNoNoNoNoNoYes
Core MaterialIridiumIridiumNickelCopperIridiumPlatinumPlatinumIridium
Vehicle Service TypeMotorcycleMotorcycleCarMotorcycle
Top Material TypeNickel, Alloy SteelNickelNickelNickel
Country of OriginMexicoMexicoMexicoMexicoUSA
ExteriorChromeChromeMachinedChromeChromeChrome
Number of Items4444

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