firefly
Well-Known Member
I've always used NGK Iridium & love their performance & long life, I also used Bosch Silber (silver center electrode) & found them comparable to Iridiums in performance at a fraction of the cost, they are the same heat range as stock NGK spark plugs.
Part # = XR4CS Bosch Silber
Part # = XR4CS Bosch Silber