C-Cut Spark Plugs

Accel 0437S-4 Features:

• Allows spark to expand directly above the midpoint of the electrode core - preventing the spark from being shrouded by the ground strap.
• Gives the flame an unblocked area to grow - creating a larger flame front for a more complete burn.
• Reduces excess heat absorption of the electrode and ground strap, also known as the 'quenching effect', leading to misfiring, rough idle, and poor performance.
• Produces a larger spark nucleus without having to increase the spark gap.
• Creates a more complete burn of the air-fuel mixture resulting in -Increased performance, improved throttle response, greater fuel efficiency, and reduced emissions.

Accel 0437S-4 Note:

• Not Compatible with 90-Degree Ceramic Plug Wire Boots