Spark Plugs
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Junior Member
Joined: May 2019
Posts: 19
Spark Plugs
I have read several times in this forum that AC Delco Iridium spark plugs are a must for the H2's. I have a 2003 H2 with the 6.0. I go to O'Reillys website and it says that they are not suggested for the H2. Any input? Can someone give me a parts number to the AC Delco iridium plugs they use?
Senior Member
Joined: Jul 2012
Posts: 8,999
From: C-Town
I have read several times in this forum that AC Delco Iridium spark plugs are a must for the H2's. I have a 2003 H2 with the 6.0. I go to O'Reillys website and it says that they are not suggested for the H2. Any input? Can someone give me a parts number to the AC Delco iridium plugs they use?
AC Delco is a DISTRIBUTOR! NGK manufacturers the OEM spark plugs for GM. Look here for part number:
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