Replaced a defective NGK made in Korea coil with an OE I was surprised to see it is made in the USA by Diamond. It seems more than a couple of companies are using them now as OE. I never heard of them before. Over the past couple of years I have seen a engine damaged by a plug the ground electrode fell off, a few bad sensors and 2 or 3 bad coils. It appears NGK is not the same quality it was some years ago. That is a shame, they were always a safe go to brand.
Diamond Electric, MFG | Ignition Coil Manufacturer
Diamond Electric is an ignition coil manufacturer for automotive companies like Ford, Dodge, & Subaru. Our company slogan is “Health, Trust, and Progress.”
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