I changed out to NGK Iridiums after I looked down and saw my OEM plugs rusting out one day. Never had a problem and last time I checked 'em they were beautiful.

 

I run only Champion plugs on everything that comes into my shop. It's not a money thing in so far as Champion makes the plugs for Harley and only single seals them where as the regular Champion RN12YC is double sealed.

 

Standard H-D plugs here.

 

I am running S.E. triple platinuims in my 2000 EGS and have 78,000 + miles on them.Bike performs good and starts easy.

 

I paid $10.00 for a pair of splitfires @ the swapmeet they were new in the box

installed them with no problems-rise safe

 

What about the NGK's DCPR8E for a 2003 HD Ultra Classic?

 

I am running stock. Is there a real reason to change?

other than "fix it til you break it".?

chuck

 

Really there is no real reason to change from stock. Personally I run Champions, because I can get them at a deal. Same as oe. I look at it as there are many manufactures for plugs, just like diffrent exhasut manufactures. There is no "right" answer or brand. Just prefrence.

 

Autolight 4164's will last longer then anything and they are cheap.