Dakota 4WD V8-4.7L Flex Fuel (2008)
Spark Plug: Service and Repair
Spark Plug - Installation
INSTALLATION - 4.7L V-8
CAUTION: This engine uses TWO DIFFERENT types of spark plugs. A total of 16 plugs is used. The plugs are mounted in two rows (banks).
The upper row (5) is used on the intake valve side of the cylinder head. The lower row (6) is used on the exhaust valve side of the cylinder head.
The upper row (5) uses Bosch Nickel Yttrium plugs #05149050AB. The lower row (6) uses Bosch Iridium plugs #05149888AA. DO NOT
INTERCHANGE THESE PLUGS.
CAUTION: Never use a motorized wire wheel brush to clean spark plugs. Metallic deposits will remain on spark plug insulator and will cause
plug misfire.
CAUTION: Do not attempt to clean any of the spark plugs. Replace only.
1. To aid in coil installation, apply silicone based grease such as Mopar(R) Dielectric Grease # J8126688 into spark plug end of rubber boots (4) and
(7). Also apply this grease to the tops of spark plugs (5) and (6).
2. Check and adjust spark plug gap with a gap gauging tool (1). Refer to the Spark Plug Specification for plug gap. Two different gaps are used.
See: Specifications
3. Start the spark plug into the cylinder head by hand to avoid cross threading. Special care should be taken when installing spark plugs into the
cylinder head spark plug wells. Be sure the plugs do not drop into the plug wells as electrodes can be damaged.
CAUTION: Due to tight clearances between upper row of plugs (5) and cylinder head, a conventional deep, thick-wall spark plug socket
will not fit. Use a deep, THIN-WALL 5/8" spark plug socket for plug removal and installation.
