1995 4.0 spark plugs

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Graeme280778

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Feb 21, 2025
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Hi what spark plugs for 1995 4.0L manual shift. App 985 have come out but can’t find them to replace. Any help appreciated. Thanks

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welcome to forum, you plug is a autolite brand. very common in u.s.a. my 1995 wrangler has champion plugs RC12LYC a very good plug, that all i have used 1995. hope this helps.
 
I’m having a bit of a misfire and found that I have 4 matching and 2 odd ones I want to replace with all new matching food quality ones. Any idea what ones I need. ? App 985 plugs don’t seem available
 
The Yjs with distributors aren't really picky. You can run standard plugs, single platinum or double platinum.

What brands are available there? Factory recommendation for a YJ is going to be Champion RC12LYC standard plug.
 
These old 4.0's like the cheap plugs. I had read that over and over and when I did my rebuild, I just went with the old Champion copper plugs in mine and she runs great with them.
 
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