Introducing the E3.52 Spark Plug – a 14mm, 0.375” reach plug with a gasket seat, specially designed for a wide variety of GM applications from the 50s to early 80s. This spark plug is the ideal choice for older small block Chevrolet engines, offering a perfect fit and exceptional performance.

Key Features:

GM Application Compatibility: Tailored to fit a diverse range of GM vehicles from the 50s to early 80s, making it the recommended plug for older small block Chevrolet 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.
Gasket Seat Design: Provides a secure seal for optimal combustion performance.
Unique Ground Electrode: Engineered for superior spark performance.
Full-Size Center Electrode: Delivers consistent and efficient spark ignition.

The E3.52 Spark Plug is your go-to choice for GM vehicles of the 50s to early 80s, delivering reliability, longevity, and improved engine performance. Trust E3 for a spark plug that exceeds expectations, bringing innovation and outstanding results to your classic GM engine.