They are supposed to be gapped to .028 according to NGK Spark plug website and another forum I read said .032 to .028.
I gapped mine to .032 they came out the box at .040
I was being cautious because I read .028 to .032.
I used NGK Iridium IX.
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- 15 Mar 2018, 10:30
- Forum: S80 1st gen 1999-2006
- Topic: Spark plugs and their gap
- Replies: 3
- Views: 5149