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Jeep
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2007
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Commander Base, 3.7 K, RWD
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Repair and Diagnosis
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Engine Performance
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Ignition System
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Ignition System (Service Information)
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Ignition System - Service Information
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Specifications
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Spark Plugs
Spark Plugs
SPARK PLUG SPECIFICATION
ENGINE
PLUG TYPE
ELECTRODE GAP
3.7L
ZFR6F - 11G (NGK)
1.1mm (0.042 in.)
4.7L
RC12MCC4
1.01 mm (.040 in.)
5.7L
Champion - RE14MCC4
1.14 mm (.045 in.)