Description

The Cummins Steel Crown Piston M-3164 (Standard Size) is a heavy-duty piston assembly engineered to withstand high combustion pressures and elevated operating temperatures common in demanding diesel applications. Designed as a direct replacement for OE part numbers 3923164 and 3802406 , this piston delivers OEM-correct fitment, strength, and long-term reliability in Cummins diesel engines . Steel crown pistons are purpose-built for durability where thermal and mechanical loads exceed the limits of conventional aluminum pistons. The steel crown construction improves resistance to cracking and crown deformation, supports higher cylinder pressures, and enhances overall piston longevity—making the M-3164 piston a dependable choice for heavy-duty rebuilds. This piston features precision-machined ring lands, controlled thermal expansion characteristics, and an optimized skirt profile to reduce friction and maintain piston stability. When installed with the correct piston ring set, piston pin, bushings, and retainers, it helps restore factory compression, reduce blow-by, and control oil consumption. The M-3164 steel crown piston is commonly installed during engine rebuilds, in-frame overhauls, piston replacements, and professional remanufacturing projects . It is trusted by diesel technicians, fleet maintenance teams, and engine builders who require OEM-level durability and performance. Cross-Reference (OEM) Aftermarket Reference: M-3164 OEM References: 3923164, 3802406 Size: Standard (STD) Type: Steel Crown Piston