Cummins Piston & Rings, 4376244

replaces: 4376244, 4955923, 2881878, 4357173
Includes the following components: 1 qty 4367173 Piston Assembly  1 qty 4309441 Piston Ring Set  2 qty 3064305 Retaining Ring  1 qty 3689296 Piston Pin
Our pistons are manufactured from special materials like eutectic aluminum, ductile iron and steel alloy. Surface treatments such as anodizing and nitriding are typically used in the ring grooves and crown area for durability. Anti-friction coatings like tinning, phosphate and graphite provide scuff protection during initial engine break in. HDP pistons are designed and manufactured to meet or exceed the most rigorous and stringent specifications.