Mahle S224-3731-0.50MM Engine Piston

OE-Style Oversized Piston for Chrysler, Dodge, Jeep, and Ram

The Mahle S224-3731-0.50MM is an oversized engine piston built for select Chrysler, Dodge, Jeep, and Ram applications. It uses an aluminum construction with a dome piston head, press-fit pin design, and skirt coating to support precise cylinder sealing and controlled operation in rebuilt engines.

For engine work on a Chrysler 300, Dodge Charger, or Ram 1500, this Mahle piston is specified as a 0.50 mm oversize replacement and is intended for use with ring set 42108CP.020.

Key Features

• Mahle OE-quality engine piston
• Part number S224-3731-0.50MM
• 0.50 mm oversized fitment
• Aluminum piston material for reduced reciprocating mass
• Dome piston head design
• Press-fit pin configuration
• Skirt coated for improved wear control
• Compensated ring grooves for consistent ring loading and oil control
• Top compression ring thickness: 1.20
• Second compression ring thickness: 1.20
• Oil ring thickness: 2.00
• Piston pin outside diameter: 24.0185

Detailed Description

Mahle manufactures this piston to OE standards with expansion-controlled design features that help maintain small fitting clearances. That approach supports quieter operation, reduced wear, and improved oil control in properly machined engines. The dome head and compensated ring groove design make this piston a practical choice for rebuilds where accurate ring loading and cylinder sealing matter.

This part number, S224-3731-0.50MM, is listed for 2009-2020 Chrysler 300, 2009-2020 Dodge Charger, 2011-2020 Dodge Durango, 2009-2020 Jeep Grand Cherokee, and 2011-2020 Ram 1500 applications, along with additional Chrysler, Dodge, Jeep, and Ram coverage shown in the fitment data. It is also referenced for 2009-2010 Jeep Commander and 2009 Chrysler Aspen applications.

What This Piston Helps Address

• Oversize cylinder bore rebuild requirements
• Worn or damaged original pistons
• Loss of compression from piston wear
• Oil control issues related to ring sealing
• Noise and wear concerns from improper piston clearance

Installation Notes and Tips

• Verify bore size before installation; this is a 0.50 mm oversized piston.
• Use the specified ring set 42108CP.020 for the listed applications.
• Confirm press-fit pin requirements during engine assembly.
• Measure cylinder clearance and ring end gap during machine work and final assembly.
• Follow the service specifications for the exact Chrysler, Dodge, Jeep, or Ram engine being rebuilt.

Quality Assurance

Mahle is a major OE piston manufacturer, and this piston reflects that OE-focused engineering approach with controlled expansion, compensated ring grooves, and application-specific fitment. Part number S224-3731-0.50MM is built for rebuild work where dimensional accuracy and consistent ring control are important.