crazy charlie
Vice Admiral
- Joined
- May 22, 2003
- Messages
- 5,602
Just got some new plugs for my 5.0 xl merc i/os.I like ngks and I checked and double checked and the plug designation is YR5.The ngk is a more shallow plug than I am currently using a/c.Called ngk and they had a term for it but they say that the shorter head(threads and gapping electrode) is correct.Does this sound correct???Charlie