NGK knows that the needs for industrial SPARK PLUGs require quality, reliability and durability. Designed with reliable technology and OE quality production, AS3-25 are commercial grade plugs for landfill, bio gas, oil and gas, and power generation industries. The NGK Difference Durable Terminal & Resistor Patented Insulators Stainless Steel Gasket Extreme Durable Thread and Plating Triple Seating…

How often should I replace my SPARK PLUGs? Unfortunately, there is no single answer to this question. As SPARK PLUGs grow older, they lose their sharp edges as material from the center and ground electrodes is slowly eroded away. As the gap between these two points grows, the voltage required to bridge the gap increases proportionately. Even the best ignition systems will be strained to supply enough…

We partner with OEMs to develop the latest innovations, making Niterra the supplier of choice for nearly every manufacturer. With world-class quality and engineering, our expertise goes beyond the aftermarket to drive the automotive industry forward. Niterra North America, Inc. has built a reputation for quality and reliability with state-of-the-art facilities across the country. As a leader in product…

Power Equipment SPARK PLUGs Did you know there are several different SPARK PLUGs for power equipment applications? With so many SPARK PLUG options, it is very important to use the correct SPARK PLUGs for each application. Grouping all power equipment SPARK PLUGs into “long” or “short” SPARK PLUGs is not specific enough to meet the necessary SPARK PLUG design demands for each different engine.…

Decoding SPARK PLUG Part and Stock Numbers Did you know every NGK SPARK PLUG has both a plug number and a stock number? Only the plug number is labeled on the SPARK PLUG, while both are printed on the box. The plug number is used to decode the SPARK PLUG and the stock number is used by our sales associates to aid in stock management, as alphanumeric numbers are harder to inventory. The stock number…

Waste Spark Ignitions Like most automotive systems, the ignition system has undergone many changes. One example is the Distributorless Ignition System, or “DIS” for short. This system introduced in the 1980s. The distributor, coil, cap and rotor the conventional system were replaced by coil packs. The new DIS system proved to be more reliable and required less maintenance. The earliest DIS featured…

Iridium IX® vs. OE Iridium SPARK PLUGs NGK builds two types of iridium SPARK PLUGs: OE Iridium and Iridium IX®. Every plug in the Laser Series was designed for an OEM application. All dual precious metal plugs are designed to provide maximum longevity. For the OE Iridium series, dual precious metal means iridium on the center tip and platinum on the ground electrode. Some of these plugs have special…

Understanding SPARK PLUG Heat Range One of the most misunderstood aspects of SPARK PLUGs – is the heat range. One misconception is that the heat range is related to the spark temperature or intensity. Another common misconception is that the SPARK PLUG is designed as a heat sink to “remove” heat from the combustion chamber. These ideas are both false. The SPARK PLUG is heated during combustion…

5 Things You Should Know About SPARK PLUGs 1. Anti-seize NGK SPARK PLUGs feature trivalent plating. This silver or chrome-colored finish on the threads is designed to provide corrosion resistance against moisture and chemicals. The coating also acts as a release agent during SPARK PLUG removal. NGK SPARK PLUGs are installed at the factory dry, without lubrication or anti-seize. Anti-seize can act as…