Spark Plug for 1999-2007 Jeep Grand Cherokee & More - Bosch 9664

Bosch 9664 spark plug for the 1999-2007 Jeep Grand Cherokee V8 4.7L and other vehicles ignites the air-fuel mixture in the cylinder with a double iridium fine wire design. It belongs to the Bosch OE Fine Wire Double Iridium line.

• Ultra fine wire design with a laser welded, tapered ground electrode
• Iridium firing pin and iridium ground electrode inlay for longer plug life
• Fine wire design needs up to 24% less voltage to ignite
• 360 degree continuous laser welding for increased durability
• Copper core with a broader heat range to resist pre-ignition and fouling

Quick facts

• Part: Bosch 9664 spark plug
• Fits: 1999-2007 Jeep Grand Cherokee V8 4.7L and other vehicles
• Condition: New

Hard starting, a misfire, a rough idle or lower fuel economy can mean worn spark plugs. A weak ignition coil, a clogged fuel injector or a vacuum leak can be behind the same signs, so find the cause before buying. This listing is one plug; the V8 4.7L takes one per cylinder, eight in all.

Fits

This spark plug suits the 1999-2007 Jeep Grand Cherokee V8 4.7L, the 2002-2007 Dodge Ram 1500 V8 4.7L and the 2000-2008 Dodge Durango V8 4.7L, along with other vehicles. If your car is not named here, look it up by year and model in the "Vehicles it fits" section.

Specifications

In the box

One spark plug.

Installation notes

• Pre-gapped, so no gap adjustment is needed.
• Nickel plated threads, so no anti-seize is needed.