MAHLE 224-3673.040 Oversize Engine Piston 5.9L Cummins .040 Bore

The MAHLE 224-3673.040 is a precision-engineered .040" oversize replacement piston designed for 2004.5-2007 Dodge Ram 2500/3500 equipped with the 5.9L Cummins Common Rail diesel engine (VIN C, engine code ETH). This OE-quality piston features MAHLE's proven design technology to restore compression, reduce oil consumption, and maintain optimal engine performance in rebuilt or bored engines.

Key Features:

• Cast aluminum construction with dish design and 17.1:1 compression ratio
• Compensated ring grooves ensure proper ring loading and superior oil control
• Expansion-controlled skirt design minimizes piston-to-wall clearance for reduced noise and wear
• 4.042" bore diameter (102mm + .040" oversize) for rebore applications
• Includes wrist pin and retaining clips
• 2.818" compression height with 1.575" pin diameter
• Press-fit or floating wrist pin design
• OE replacement quality meets or exceeds original specifications

Important Notes: Piston rings are NOT included and must be purchased separately. This piston is sold individually and priced per piece—order quantity of six for complete engine rebuild. Requires proper cylinder boring, honing, and verification of piston-to-wall clearance per Cummins specifications. Ring grooves: 3.00mm x 2.38mm x 4.00mm.

MAHLE is a world-leading manufacturer of OE and aftermarket engine components, trusted by professional engine builders and technicians for precision fitment and long-lasting durability.