MAHLE 224-3523WR OE Replacement Engine Piston Set with Rings - Standard Bore

The MAHLE 224-3523WR is a complete OE replacement engine piston set designed for the Cummins 5.9L 12-valve diesel engine. Featuring a marine-style wide bowl combustion chamber design, this standard-bore set is engineered to meet or exceed original factory specifications for a precise, reliable fit during engine rebuilds.

Key Features:

• Marine-style wide bowl piston head — matches OE combustion chamber geometry for proper fuel mixture and combustion efficiency
• Compensated ring grooves — ensure proper ring loading and oil control throughout the piston's service life
• Expansion-controlled design — allows for tighter fitting clearances to reduce engine noise, wear, and emissions while improving oil control
• Aluminum construction — lightweight, high-strength material consistent with OE piston manufacturing standards
• Standard bore size — 4.002 in. (101.660 mm) bore diameter with 4.720 in. stroke
• Ready-to-install configuration — rings, pins, and clips pre-included for engine builder convenience

MAHLE is one of the world's largest OE piston manufacturers, supplying original equipment to major diesel engine platforms globally. The 224-3523WR piston set delivers the same build quality and dimensional accuracy as factory components, making it the preferred choice for professional engine rebuilders and diesel enthusiasts performing a Cummins 5.9L 12V engine overhaul.