I was wondering if any of you guys can explain this. I bought some plugs off of stealbay and when I get them they`re different, smaller than normal. Same numbers and everything, but clearly different. The only reason I bought them, they were $9.99 for a box of 10 compared to the 2+ dollars plus tax I pay for each at the dealership. The guy was totally cool and understanding when I contacted him. After sending him side-by-side pics, he refunded all my money immediately and told me to keep the plugs. Now thats good service! Heres a pic, ebay on the left...
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I`m thinking older model or something???

 

As long as the threads are the same and the length of insulator on the electrode is identical. Run them.

The difference can come from location of manufacture or what machine they used at the time.

You need to compare the business end to see if they truly are different. I bet they are not.

 

Business end...
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The only thing different I can see is the color of the strap thing. There is a noticable difference in weight also. I`m just a little concerned being I run 8-10#`s boost and n20 on top of that.

 

they look the same to me.....i say run 'em

 

They look good to me too.

The amount of ceramic around the electrode dictates the heat range. The look about the same.

 

So then why are you cheaping out on something that isn't even expensive?

 

Agreed

 

Agreed. Just was crusing ebay and saw those and thought, "I can use those in the future."