Komatsu PC170LC-11 SCR Outlet Catalyst Module 2013-2021: OEM 6544-01-0080

What Keeps Komatsu PC170LC-11 Excavator Emissions Under Control? The SCR Outlet Catalyst Module (2013–2021)

What is it?

The Komatsu PC170LC-11 SCR Outlet Catalyst Module, identified by OEM 6544-01-0080, is an exhaust aftertreatment component designed to support the Selective Catalytic Reduction (SCR) system in compatible Komatsu excavators. It helps reduce nitrogen oxide (NOx) emissions through a catalytic reaction that converts these pollutants into nitrogen and water vapor. The module works alongside the Diesel Exhaust Fluid (DEF) delivery system to support effective exhaust treatment during demanding equipment operation.

Why choose this SCR Outlet Catalyst Module?

Komatsu PC170LC-11 excavators are frequently used in construction and earthmoving operations where engines experience changing loads, extended working hours, and demanding environmental conditions. OEM 6544-01-0080 is intended for compatible applications from 2013 through 2021, helping maintain the correct configuration within the existing exhaust aftertreatment system.

SCR catalyst modules operate under high exhaust temperatures and are continuously exposed to vibration, repeated thermal cycles, and combustion byproducts. Over time, DEF crystallization, catalyst contamination, internal deterioration, or exhaust leaks can interfere with proper NOx conversion.

Possible signs of SCR catalyst problems include emissions-related diagnostic codes, elevated NOx readings, DEF system warnings, abnormal exhaust temperatures, or engine derating. Replacing a damaged or deteriorated module with the correct application-matched component helps restore the intended exhaust treatment process.

Key Benefits

✅ Intended for compatible Komatsu PC170LC-11 applications (2013–2021)
✅ Helps reduce nitrogen oxide (NOx) emissions from diesel exhaust
✅ Supports proper Selective Catalytic Reduction operation
✅ Facilitates the conversion of NOx into nitrogen and water vapor
✅ Integrates with compatible DEF dosing and exhaust treatment components
✅ Designed for demanding construction and earthmoving environments

Applications

This SCR Outlet Catalyst Module is intended for compatible Komatsu PC170LC-11 hydraulic excavator applications from 2013 through 2021. These machines are commonly used in excavation, road construction, utility installation, site preparation, and general earthmoving projects. Aftertreatment configurations may vary depending on equipment specifications, emissions requirements, and production details. Confirm OEM number 6544-01-0080 along with the machine serial number and exhaust system configuration before installation.

Installation Notes

Before installation, allow the exhaust system to cool completely and inspect surrounding aftertreatment components for damage, contamination, or excessive deposits. Check the DEF injector, decomposition tube, NOx sensors, exhaust temperature sensors, clamps, gaskets, and exhaust connections for leaks or deterioration. Identify and correct any underlying DEF dosing, exhaust leakage, or engine-related issues that may have contributed to catalyst failure. Follow the manufacturer's installation procedures and verify SCR operation using suitable diagnostic equipment after installation.

Final Thoughts

Maintaining proper NOx conversion is essential for effective diesel emissions control during demanding excavator operations. The Komatsu PC170LC-11 SCR Outlet Catalyst Module (OEM 6544-01-0080) provides an application-specific replacement option to support reliable exhaust treatment and consistent aftertreatment operation in compatible 2013–2021 equipment.