has anyone tried these in their bike yet ?? I use the regular Bosch 4 in my 1800 and they work fine. was cosidering these new ones. if so, what is the part number for the Iridium to fit a 2003 1800 C ? thanks for any input.
the Bosch rep. gave me a part # of 4512 for the Bosch IR Fusion plugs. he also said that these are not tested in motorcycles, so the company does not recommend them. I have had no problems with the plus 4 that I use though. advanced auto gave me a price of $9.98 each.