Get 15% off all Autolite, Champion, NGK, Denso, Bosch and Pulstar Iridium spark plugs!
Use the coupon code "FBIRI15" at checkout to get 15% off your purchase of Iridium spark plugs. Valid through the end of June on http://www.sparkplugs.com/

They charge an assload for shipping. $9.34 to ship 4 spark plugs?? But for 4 Denso ITV22s which is what most Mazdaspeed 3/6 owners use, it does come out to be $4 cheaper than ordering them from StreetUnit.