Spark Plugs

[edwardm419]

I just bought a set of AC Delco iridium spark plugs and they didn't come pre gapped. Do you know the gap for the plugs? I bought them for a 2003 chevy silverado Z71 5.3L.

[stadt11]

They come pre-gapped & on their website they say not to re-gap, but they should be @ .040

[txab]

.040 gap. It should be pre-set.

41-985 is plug #

 

Welcome Edward!

[edwardm419]

thanks, everyone. The reason I asked was because the representative from summit racing told me they were not gapped.

[txab]

If any look like they aren't as they should be, you can check them. But you need to be very careful as the tips are brittle and can be damaged

[edwardm419]

thanks for the good advice, I appreciated.

[markw8]

Iridium plugs should Never be regapped. If they're wrong take them back.

 

Mark