NGK

Accel 416 sparkplug versus NGK GR4IX iridium sparkplug

NGK GR4IX iridium sparkplugs

October 2, 2017 BigBlockMopar 0

Swapped over to NGK GR4IX Iridium sparkplugs today in my daily workhorse (’73 Dodge Dart). Was using Accel 416 sparkplugs before. Sparkplug gap before and after was a little different; Before with Accel 416 plugs: [more … ]