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E3 Spark Plug – E3.54 Automotive Plug


E3.54 is a 14mm, 0.708” reach plug with a taper seat. It fits domestic applications, and is widely available in automotive retail stores. E3 automotive plugs have three legs securing the DiamondFIRE electrode to the shell. This allows for excellent heat transfer, and helps to create more turbulence in the cylinder. The patented DiamondFIRE side wire is proven to increase power, reduce fuel consumption and improve hydrocarbon emissions in long-term use. The unique ground electrode and full-size center electrode also provides optimal performance for a guaranteed five years or 100,000 miles.

SKU: E3.54 Category:



  • 1998 – 2002 Camaro/Firebird | 5.7L V8 FI (16V) OHV (G)
  • Near elimination of performance inhibiting carbon deposits, dramatically longer plug life and a 5-year/100,000 mile limited warranty
  • DiamondFire electrode technology that creates a superior spark and resulting flame front extending further into the cylinder, producing more localized pressure
  • Significant potential power increase: > 6% to 12% (depending on engine class)
  • Significant potential fuel efficiency improvement: > 4% to 13% (depending on engine class)
  • See manufacturer website for application information.



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