MAHLE 224-3902.030 Engine Piston Set Oversized, Aluminum Bowl-Top

The MAHLE 224-3902.030 is an oversized aluminum engine piston set engineered to OE quality standards. MAHLE is one of the largest original equipment piston manufacturers in the world, and this set reflects that expertise with compensated ring grooves that ensure proper ring loading and oil control, as well as expansion-controlled designs that allow for tight fitting clearances — reducing engine noise, wear, and emissions while improving oil control. Each piston features a bowl-type head and arrives ready for installation, with piston rings mounted and pin and clips included for the convenience of the engine builder.

Key Features:

• Oversized replacement piston set meeting OE quality standards
• Aluminum construction with bowl-type piston head
• Compensated ring grooves for accurate ring loading and oil control
• Expansion-controlled design for reduced engine noise, wear, and emissions
• Top compression ring thickness: 2.30 mm
• Second compression ring thickness: 2.00 mm
• Oil ring thickness: 3.44 mm
• Piston pin outside diameter: 34.01 mm
• Arrives with piston rings mounted; pin and clips included

Built by a global OE piston manufacturing leader, this set delivers the precise fit and long-term durability expected in professional engine rebuilds. Fits select 2003–2010 Ford and other applications.