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.
2009 Chrysler 300 V6-2.7LFACTORY OEM SERVICE PROCEDURE
Piston, Engine
Piston Dimensions and Clearances
Piston Diameter 85.983 mm ±0.019 (3.3851 in. ±0.0017)
Clearance at Size Location -0.0096 to +0.0436 mm (-0.0003 to +0.0016 in.)
Piston Weight 316-326 grams (11.1466-11.4994 oz.)
Piston Ring Groove Diameter-No.1 77.8-78 mm (3.063-3.070 in.)
Piston Ring Groove Diameter-No.2 75.9-76.1 mm (2.988-2.996 in.)
Piston Ring Groove Diameter-No.3 76.5-76.7 mm (3.011-3.019 in.)
Piston Diameter 85.983 mm ±0.019 (3.3851 in. ±0.0017)
Clearance at Size Location -0.0096 to +0.0436 mm (-0.0003 to +0.0016 in.)
Piston Weight 316-326 grams (11.1466-11.4994 oz.)
Piston Ring Groove Diameter-No.1 77.8-78 mm (3.063-3.070 in.)
Piston Ring Groove Diameter-No.2 75.9-76.1 mm (2.988-2.996 in.)
Piston Ring Groove Diameter-No.3 76.5-76.7 mm (3.011-3.019 in.)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.