|
Re: Delco spark plug ID mark
Tony: 41-985 is a iridium spark plug, which is an
improvement. The marking of a triangle, which I have seen on
aftermarket AC Delco plugs. I have also seen a "Z" marking
on them! 
iATN Members:
Login to read this message and participate Auto Repair Pros: Join iATN to read this message and others Vehicle Owners: Find a nearby iATN member to repair your vehicle |
Video