Hi,
Has anyone replaced their plugs on the 3.5 SXT? Any instructions and what type olugs did you use?

Dennis

 

the stock sparkplugs are good for 100,000 miles. you will need to buy the same long like type of plugs. you also need to remove the upper intake manifold to get at the plugs.

 

OK thanks. I'm at 47k, hard to believe I could wait 100k, but I guess I can wait a little longer anyway.

Thanks!

 

dodge says 99,000 mile on the sparkplug for the 2.7L and the 3.5L engines. you can check with your magnum's maintenance logbook schedule. the 5.7 hemi plugs are good for only 30,000 miles because they are just regular copper core plugs.