Introducing the E3.66 Spark Plug – a 14mm, 1.000” reach plug with a taper seat, designed to fit a wide variety of late-model applications, particularly Hemi applications. Widely available in automotive retail stores, the E3.66 Spark Plug showcases advanced technology and innovative features for superior performance and reliability.

Key Features:

• Wide Application Range: Tailored to fit a diverse range of late-model applications, with a focus on Hemi engines.
• Three-Legged DiamondFIRE Electrode: Secures the DiamondFIRE electrode to the shell with three legs, ensuring excellent heat transfer and increased turbulence in the cylinder.
• Patented DiamondFIRE Side Wire: Proven to enhance power, reduce fuel consumption, and improve hydrocarbon emissions over extended use.
• Taper Seat Design: Facilitates a secure fit for optimal combustion performance.
• Unique Ground Electrode: Engineered for superior performance.
• Full-Size Center Electrode: Provides consistent and efficient performance for a guaranteed five years or 100,000 miles.

The E3.66 Spark Plug offers unmatched performance and reliability, making it an ideal choice for late-model vehicles, especially those equipped with Hemi engines. Trust E3 for a spark plug that exceeds expectations, delivering lasting performance and innovation.