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Discussion Starter · #1 ·
Not sure where to put this but I need to do plugs on my 16 rebel. I changed mine on my 13 but can’t remember paying the $400 dollars from the dealer for just plugs when I can get ngk from parts store for $100. Do I need dealer plugs? Thoughts?


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Yes, and if you go back 10 years chrysler sold 5.7L hemi’s with copper plugs anyway. The service life was only 30k which is why they went to iridium. Saying you can’t run copper is factually inaccurate, but at less than 30% of the life I wouldn’t.
 

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Discussion Starter · #8 ·

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That link above are those iridium?


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Those are NGK LZFR5C-11 which are copper plugs. The iridium analog of them is NGK LZFR5CI-11: Best Spark Plugs for 5.7 HEMI: How to Choose the Proper Ones. The set of 16 costs about $120

Regarding materials, you can install run copper plugs no problem up to 30k miles, but iridium plugs live almost 3 times longer. Thus buying a set of iridium spark plugs is a much more cost-effective solution
 
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