Mahle forged Monotherm pistons for 2004.5–2007 Cummins 5.9L diesel engines, supplied as a six‑piece set meant for engine rebuilds. These forged steel pistons are sized for a 4.055" bore with a 4.724" stroke for a 366 cid package, and the detailed spec set lists 7.559" rod length, 1.575" pin and a -48.6 cc dish with roughly 1736 g mass and about 16.2:1 compression.
Mahle MS Piston Set 04.5-07 Cummins 5.9L Forged Steel Monotherm 4.055 BR 4.724 STK 16.1 CR (6 Qty)