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Autolite makes the HD Plugs, not Champion.The most important consideration (other than the wrong plug) is the Heat Rating. This is how Heat is displaced or retained. Secondly is the type of fuel management system, ie: Carb / EFI (Delphi's receive pulse communications feedback following combustion). Last is the desired result - HP/TQ - Mileage - Longevity
"Autolite makes the H-D plugs, not Champion"Since when? Not getting cranky, just asking .
Last I heard Champion was still the exclusive manufacturer for HD but I'm not always up on the current situations. Here's and interesting site if you guys want to know more about spark plugs.http://www.harleyhelp.com/sparkplg.html
What is the best plug to run in a Harley.And has anybody ever considered if INdexing a spark plug is important on a Harley or not.
Quote from: cardboard on Wednesday, March 21, 2012. 06:16:47 PM.What is the best plug to run in a Harley.And has anybody ever considered if INdexing a spark plug is important on a Harley or not.We got an oil bird, we need a spark plug rubber chicken!
I get rather amused when I read a comment such as – I changed spark plugs today to another brand, I really like them. Just sayin
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