4 PCS - Bosch 9710 Double Iridium Spark Plugs (ZR7SI332S)

Double Iridium firing pin and ground electrode inlay provide 4X longer service life compared to standard copper plugs.

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

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The Best of OE Technology

OE Replacement Extreme durability and longest life are achieved through 360-degree continuous laser welding to fuse the iridium firing pin Exceptional ignitability and performance comes from the ultra fine wire design, while the copper core provides broader heat range to eliminate pre-ignition and fouling	Longer Service Life Fine wire firing pin reduces voltage requirement Copper core ground electrode (when required) provides better heat transfer	No Anti-Seize Nickel-plated shell with rolled threads requires no anti-seize Complete anti-seize and corrosion protection built into the nickel-plated shell	No Gapping Needed Ribbed insulator design prevents flashover