As the largest supplier and manufacturer of spark plugs and oxygen sensors for import and domestic vehicles, we are the industry experts you can count on. With rigorous testing standards and countless first to market technologies, NGK, NTK as leaders in innovation.

NGK spark plugs push the limits of performance and innovation, bringing the most advanced technology to today’s high-efficiency engines. From the high-tech Ruthenium HX™ to the …

Get the spark plug basics, from overheating and misfires to ignition timing and knocking.

Ignition Parts Spark Plugs Industrial Spark Plugs Non-Automotive Spark Plugs Ignition Coils MOD Performance Coils Wire Sets Sensor Parts Position Sensors Pressure Sensors Speed Sensors Temperature Sensors Specialty Sensors Fluid Level Sensors Oxygen Sensors Air-Fuel Ratio …

Ignition Parts Spark Plugs Industrial Spark Plugs Non-Automotive Spark Plugs Ignition Coils MOD Performance Coils Wire Sets Sensor Parts Position Sensors Pressure Sensors Speed Sensors Temperature Sensors Specialty Sensors Fluid Level Sensors Oxygen Sensors Air-Fuel Ratio …

This video describes in detail the best process to examine a spark plug and assess its condition.

Get your engine running with a full line of spark plugs, coils and wire sets from NGK. Our ignition parts cover 95% of import and domestic vehicles and are engineered to the highest durability and operational standards to meet or exceed OE requirements.

Since 1936, NGK Spark Plugs has been the world leader in technology, innovation and world-class quality in the design of spark plugs and oxygen sensors. With the expansion of our ignition …

What does the heat range really mean on your spark plug? We have the answers on our training resource page.

Ignition Parts Spark Plugs Industrial Spark Plugs Non-Automotive Spark Plugs Ignition Coils MOD Performance Coils Wire Sets Sensor Parts Position Sensors Pressure Sensors Speed Sensors Temperature Sensors Specialty Sensors Fluid Level Sensors Oxygen Sensors Air-Fuel Ratio …