Check the listing for details. 6 Bosch Double Iridium Spark Plugs For 2001-2004 NISSAN FRONTIER V6-3.3L. Condition: New. Listed at 49.95 USD. 6 PCS - Bosch 9610 Double Iridium Spark Plugs (FR6KII33X) Double Iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs. Made in Germany! 0.6mm fine wire firing pin provides superior ignitability and performance 360° continuous laser weld fuses corrosion resistant iridium firing pin to base for increased durability 7 year performance satisfaction Original equipment, pre-gapped replacement delivering optimum fit, form and function Made in Germany, Free Shipping! The Best of OE TechnologyOE ReplacementExtreme durability and longest life are achieved through 360-degree continuous laser welding to fuse the iridium firing pinExceptional ignitability and performance comes from the ultra fine wire design, while the copper core provides broader heat range to eliminate pre-ignition and foulingLonger Service LifeFine wire firing pin reduces voltage requirementCopper core ground electrode (when required) provides better heat transferNo Anti-SeizeNickel-plated shell with rolled threads requires no anti-seizeComplete anti-seize and corrosion protection built into the nickel-plated shellNo Gapping NeededRibbed insulator design prevents flashover24.95