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 MANUALSJEEP2009GRAND CHEROKEE 2WD V6-3.7LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON, ENGINE
2009 Jeep Grand Cherokee 2WD V6-3.7L
Piston, Engine
2009 Jeep Grand Cherokee 2WD V6-3.7LSECTION Piston, Engine
Piston Dimensions And Clearances
Diameter 92.975 mm (3.6605 in.).
Weight 365.0 grams (12.87 oz.).
Ring Groove Diameter
No.1 85.37 - 83.13 mm (3.282 - 3.273 in.).
No.2 82.8333 - 83.033 mm (3.261 - 3.310 in.).
No.3 83.88 - 84.08 mm (3.302 - 3.310 in.).
Clearance in Piston 0.006 - 0.015 mm (0.0002 - 0.0005 in.).
Diameter 92.975 mm (3.6605 in.).
Weight 365.0 grams (12.87 oz.).
Ring Groove Diameter
No.1 85.37 - 83.13 mm (3.282 - 3.273 in.).
No.2 82.8333 - 83.033 mm (3.261 - 3.310 in.).
No.3 83.88 - 84.08 mm (3.302 - 3.310 in.).
Clearance in Piston 0.006 - 0.015 mm (0.0002 - 0.0005 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.