Chrysler 1500 Owner's Manual page 669

Component
Spark Plugs – 3.7L Engine
Spark Plugs – 4.7L Engine
Spark Plugs – 5.7L Engine
Fuel Selection – 3.7L and 4.7L
Engines
Fuel Selection – 5.7L Engine
Fluid, Lubricant, or Genuine Part
ZFR6F-11G (Gap 0.043 in [1.1 mm])
Upper Bank — FR8TE2 (Gap 0.039 in [.99 mm]) Lower Bank — FR8T1332
(Gap 0.051 in [1.30 mm])
LZFR5C–11 (Gap 0.043 in [1.1 mm])
87 Octane
87 Octane Acceptable - 89 Octane Recommended
MAINTAINING YOUR VEHICLE 667
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