Komatsu PC170LC-11 SCR Outlet Catalyst Module 2013-2021: OEM 6544-01-0180

The Science Behind Cleaner Excavator Exhaust: Komatsu PC170LC-11 SCR Catalyst (2013–2021)

What is it?

The Komatsu PC170LC-11 SCR Outlet Catalyst Module, identified by OEM 6544-01-0180, is an exhaust aftertreatment component designed to support the Selective Catalytic Reduction (SCR) system in compatible Komatsu excavators. This module facilitates a chemical reaction that helps convert harmful nitrogen oxides (NOx) into nitrogen and water vapor. Working alongside the Diesel Exhaust Fluid (DEF) delivery system, it plays an important role in controlling diesel exhaust emissions during equipment operation.

Why choose this SCR Outlet Catalyst Module?

Komatsu PC170LC-11 excavators frequently operate in demanding construction environments where consistent exhaust treatment is essential. OEM 6544-01-0180 is intended for compatible applications from 2013 through 2021, helping maintain the correct configuration within the equipment's existing aftertreatment system.

SCR catalyst modules are exposed to high exhaust temperatures, repeated heating and cooling cycles, vibration, and combustion byproducts. Over time, DEF crystallization, contamination, exhaust leaks, or deterioration of the internal catalyst material can