V-Power Racing Plug 7173 .750in Reach- Ext Tip

The NGK V-Power Racing Plug 7173 .750in Reach with extended tip is a premium spark plug engineered for high-performance racing and street applications requiring precise ignition timing and reliability. Designed for serious enthusiasts and professional tuners, this non-resistor racing spark plug delivers the consistent spark delivery needed in competitive and modified engines where stock ignition components fall short. The extended tip geometry positions the electrode deeper into the combustion chamber, optimizing flame kernel initiation in high-RPM and high-compression environments.

This racing spark plug features a 14mm thread with a 0.750-inch reach and gasket seat design, ensuring proper fitment in applications specifically engineered for this configuration. The non-resistor construction eliminates suppression capacitance, allowing maximum voltage delivery to the gap for a hotter, more aggressive spark—critical in naturally aspirated and forced-induction racing engines. NGK's proven copper core electrode technology combined with the extended tip design extends the ground electrode into the combustion zone, reducing quench distance and improving combustion efficiency at extreme operating conditions.

Competitors and street racers rely on the V-Power Racing Plug 7173 for engines that demand superior cold-start performance and sustained high-load firing. Verify your engine's spark plug cavity depth and thread specification match the 0.750-inch reach before installation—improper reach can cause fouling or combustion issues. Individual spark plugs are sold one per unit, so purchase quantity matches your cylinder count for complete replacement sets.