Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSJEEP2009COMMANDER LIMITED, 5.7 T, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCETUNE-UPIGNITION CONTROL (SERVICE INFORMATION)SPECIFICATIONSSPARK PLUGS

2009 Jeep Commander Limited, 5.7 T, RWD

Spark Plugs

2009 Jeep Commander Limited, 5.7 T, RWDSECTION Spark Plugs

ENGINE	PLUG TYPE	ELECTRODE GAP
3.7L	ZFR6F - 11G (NGK)	1.1 mm (0.043 in.)
4.7L (intake/upper row)	FR8TE2	1.0 mm (.040 in.)
4.7L (exhaust/lower row)	FR8T1332 (iridium tip)	1.2 mm (0.50 in.)
5.7L	REC14MCC4	1.0 mm (.040 in.)

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.