Bosch Spark Plug P/N:7422

Keep reliable spark and long service intervals with the Bosch OE Fine Wire Double Platinum Spark Plug (MPN 7422). It's a direct-fit replacement across a wide range of listed applications, including the 2004-2008 Chrysler Crossfire [V6-3.2L], 1998-2005 Mercedes-Benz E320 [V6-3.2L], 1998-2006 Mercedes-Benz SL500 [V8-5.0L], and 1985-1989 Toyota Corolla [L4-1.6L] — see the Buyer's Guide tab for the full list of 39 applications.

• Double platinum design: A platinum firing pin on the center electrode plus a laser-welded platinum inlay on the ground electrode reduce gap erosion and meet OE specifications for double platinum plugs — Bosch rates it 3 times longer life than conventional copper plugs.
• OE Fine Wire: Requires up to 24% less voltage to ignite.
• 360-degree continuous laser welding: Increases durability for longer life.
• Copper core: Provides a broader heat range to help resist pre-ignition and fouling.
• Ready to install: Pre-gapped at 1 mm with nickel-plated threads — no gap adjustment or anti-seize needed.

This is a resistor-type plug (6000 ohms) with a flat seat, 16 mm hex, 19 mm reach, single J-gap ground electrode, and ceramic insulator. Sold individually (package quantity 1); the number of plugs a vehicle needs varies by engine across the listed applications, so order the quantity your engine requires. Made in Germany and backed by Bosch's 5-year customer satisfaction guarantee and 1-year Technician Warranty.

Manufacturer part number 7422.