Durango 2WD V8-4.7L Flex Fuel (2009)
Spark Plug: Service and Repair
Spark Plug - Installation
4.7L
CAUTION: This engine uses TWO DIFFERENT types of spark plugs. A total of 16 plugs are 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. The lower row (6) uses Bosch Iridium plugs. 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 into spark plug end of rubber boots (4) and (7). Also
apply this grease to the tops of spark plugs (5) and (6).