The best automotive performance spark plugs you can buy

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AI-generated summary · updated September 3, 2026 · verify details before purchase.

1. 

   1 Best overall Denso

   Denso 4713 Iridium TT Spark Plug

   ★★★★★4.7/5 $39.34

   Excellent durability and performance with twin-tip iridium design for improved ignitability and fuel efficiency.

   • Long lifespan
   • Improved fuel economy
   • Smooth acceleration

   • Slightly expensive

   View on Amazon manufacturer site
2. 

   2 Best value NGK

   NGK 7090 BKR6EIX-11 Iridium IX Spark Plug

   ★★★★★4.6/5 $29.60 Only 1 left

   Trusted iridium upgrade with fine-wire center electrode for better throttle response and reduced misfires.

   • Reliable brand
   • Better throttle response
   • Affordable

   • Shorter lifespan than Denso TT

   View on Amazon manufacturer site
3. 

   3 Best for GM vehicles ACDelco

   ACDelco 41-962 Iridium Spark Plug

   ★★★★☆4.5/5 $57.00

   OE replacement for many GM engines, offering consistent performance and longevity.

   • OEM quality
   • Good longevity
   • Smooth idle

   • Limited to specific applications

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4. 

   4 Best budget pick Champion

   Champion 7989 Copper Plus Spark Plug

   ★★★★☆4.4/5 $8.19

   Copper core provides reliable performance at a low cost, ideal for older engines or short-term use.

   • Very affordable
   • Good conductivity
   • Widely available

   • Shorter lifespan
   • Not for high-performance engines

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5. 

   5 Best for durability Bosch

   Bosch 4417 Platinum+4 Spark Plug

   ★★★★☆4.3/5 $35.95

   Four ground electrodes offer long service life and reliable performance in various conditions.

   • Long lifespan
   • Even wear
   • Resistant to fouling

   • Slightly lower performance than iridium

   View on Amazon manufacturer site
6. 

   6 Best for older engines E3

   E3.20 Automotive Spark Plug

   ★★★★☆4.2/5 $61.21

   DiamondFire electrode design enhances combustion efficiency and power in older vehicles.

   • Improved power
   • Better combustion
   • Easy installation

   • Not ideal for high-compression engines

   View on Amazon manufacturer site

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