I put screamin eagle plugs in my bike just so I could 'legally' wear my 'screamin' eagle'
parts T-SHIRT!

 

A spark plug is a spark plug is a spark plug

 

Funny thing, since the IC engine was invented & all the technological advances over the years the spark plug looks pretty much the same..

 

you should see the ones from formula 1 engines they don't look quite the same.

in my opinion screaming eagle plugs are only benifical in higher compression engines

 

Here's a cosmetic tip . . . If you can cross your Spark Plug Part Number to the equivalent "Marine" spark Plug Part Number . . . the outside shell on a Marine Spark Plug is usually Chrome Plated.

As for "performance" spark plugs? Iridium will last damn near forever because iridium is such a dense metal. Whether is lasts long enough to pay back the extra cost is another question entirely. Platinum is also a very dense metal, although not quite as dense as Iridium. However if you are running a very rich mixture for performance reasons and are periodically fouling your spark plugs . . . Platinum will act as a catalyst (just like in a catalytic converter) and will burn off fuel deposits that might otherwise foul a conventional spark plug.

 

Someone told me that running Screamin Eagle plugs would help with the tiny bit of pop on decel I was getting. It worked.

There are a few different plugs, recommended for different applications. I bought the standard compression plug. I also agree that they won't foul as easily as a standard plug.

YMMV.