Spark plug and suspension questions

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Spitz7575

New Member
Joined
Mar 17, 2024
Messages
6
Location
Boston
Hi everyone - had a great summer in the YJ. Changed the plugs today, and noticed that the plugs that I got at Advance (champion copper plus) were a little different despite the same model. 4 had a black/graphite looking terminal at the top, and The other 2 were silver. They're all RC12LYC.

Any issue here? Installed, and seemed to run fine around the block.

BTW got some new K02's today on some aluminum OEM wheels I picked up. Love the new stock look.

Eventually want to replace some rusty suspension parts and want to keep stock. Anyone have any recs on a good stock height OEM-like kit?

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No, all threads clean. I think it may have just been a redesign. Boxes were identical. The 4 with the darker terminals were in a 4 pack while the two silver terminals were loose
 
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Swapped them just in case. So I’m not crazy here are the same champion plugs but one has the black top.

Any thoughts around suspension would be great for reliability and stock height.
 
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