NGK 7164 TR55IX Iridium IX Spark Plug SKU #TR55IX ITEM #NGK7164 BRAND NGK Compare 1.5mm Gap 660 in stock Order by 1pm PST M-F for same day shipping $8.45 USD PRICE BREAKS - The more you buy, the more you save QuantityPrice (Each) 1 - 11 $8.45 12 + $7.61 ...