Spark plug performance with Silver electrode M14x1.25 - 25 mm reach.  ❭  R4YS

Stop...playing around with spark plugs that feature Iridium electrodes, Platinum electrodes, Copper electrodes, fine wire electrodes, split electrodes, ring electrodes or multiple electrodes and get serious with silver electrodes!  Silver is the best electrical and thermal conductor of any metal.  

This makes Nology Silver™ the best spark plugs in the world. Period!

• Silver Center Electrode
• More Spark Power
• Delivers the Most Powerful Spark
• Increased Horsepower
• Cleaner Combustion
• Long Lasting
• Race Proven Design
• Top Quality Materials

Nology Silver spark plugs are especially designed for high-performance engines.
Silver is the best electrical and thermal conductor of any metal, which makes it the ultimate material for a spark plug's center electrode. The large diameter silver center electrode increases spark carrying ability and spark power. Silver is extremely resistant to erosion, guaranteeing a virtually unchanged electrode gap for the life of the spark plug. 

Most Nology Silver spark plugs are without a resistor, perfect for performance enthusiasts who demand the most from their engines. For racing or dependability and efficiency for everyday use, Nology Silver spark plugs deliver the most powerful spark.

M14x1.25 - 25 mm reach,
Tapered, 16mm Hex (5/8")
Non-Resistor