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 MANUALSDODGE AND RAM2023CHARGER SXT, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 2 (6.4L ENGINE (SERVICE INFORMATION))ENGINE BLOCKROD, PISTON AND CONNECTINGSTANDARD PROCEDURESTANDARD PROCEDURE - PISTON FITTING
2023 Dodge and Ram Charger SXT, 4WD
Standard Procedure - Piston Fitting
2023 Dodge and Ram Charger SXT, 4WDSECTION Standard Procedure - Piston Fitting
WARNING: This page is about a different variant/trim than selected.
- Use Cylinder Indicator (special tool #C-119, Cylinder Indicator) (2) to correctly measure the inside diameter of the cylinder bore (3). A cylinder indicator capable of reading in 0.003 mm (0.0001 in.) increments is required. If a cylinder indicator is not available, do not use an inside micrometer.
- Measure the inside diameter of the cylinder bore at a point 38.0 mm (1.5 inches) below top of bore (4). Start perpendicular (across or at 90°) to the axis of the crankshaft at point A and then take an additional bore reading 90° to that at point B.NOTE:
The coated pistons, piston pins and connecting rods are pre-assembled and serviced as an assembly.
- The piston and rod assembly is specific for the left cylinder bank (odd numbered) and the right cylinder bank (even numbered) and must not be interchanged.
- The coating material (1, 2) is applied to the piston after the final piston machining process. Measuring the outside diameter of a coated piston will not provide accurate results. Therefore measuring the inside diameter of the cylinder bore with a cylinder indicator is MANDATORY . To correctly select the proper size piston, a cylinder indicator capable of reading in 0.003 mm (0.0001 in.) increments is required.
- Piston installation into the cylinder bore requires slightly more pressure than that required for non-coated pistons. The bonded coating on the piston will give the appearance of a line-to-line fit with the cylinder bore.
RENDER: 1.0x
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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.