NGK G-Power Spark Plug Box of 4 (GR45GP)

This is a box of four NGK G-Power Platinum spark plugs, part number GR45GP. These plugs are designed as a cost-effective way to get platinum performance, making them a great upgrade over original equipment nickel alloy plugs. They feature a fine wire platinum center electrode that helps reduce the voltage needed for ignition, which can lead to quicker starts and better acceleration.

The trapezoid cut on the ground electrode is a notable design choice that helps reduce quenching, meaning less of the fuel mixture is cooled down around the electrode during combustion. This, along with the copper core for heat removal and a pure alumina silicate ceramic insulator for strength and heat transfer, contributes to improved fuel efficiency and lower emissions. The trivalent metal plating on the plug body helps prevent corrosion and seizing, making installation and removal easier. These are a solid option for many vehicles from the late 70s through the early 2000s.