The Front Piston Guide (OEM Part No. 3115167100) is a mechanical spare part compatible with Epiroc rock drilling equipment, including M4C, Simba H1354, Boomer 281, S7D, and S7D-1 models. Manufactured from high-strength alloy steel, it functions as a guiding component for piston movement inside the rock drill front head assembly. The piston guide helps maintain accurate piston alignment, reduce friction and wear, and improve drilling impact stability. Designed for demanding mining applications, this precision-machined replacement part provides reliable performance, extended service life, and cost-effective maintenance support for underground and surface drilling operations.