Responsive Boost Control: Komatsu QSB / QSL Turbo Actuator (2011-2021, OEM 5269797)
What is it?
The Komatsu QSB / QSL Turbo Actuator (OEM 5269797) is the component responsible for adjusting the turbocharger’s vane or position to manage boost pressure in QSB and QSL engines from 2011 to 2021. It ensures smooth and precise boost control under changing load conditions.
Why choose OEM 5269797?
Built to Komatsu’s original standards, this actuator provides reliable responsiveness, accurate control, and long-lasting durability. Installing the OEM part helps avoid turbo lag, erratic boost behavior, or actuator faults that can arise from aftermarket substitutes. With genuine fit and calibration, you maintain optimal turbo performance.
Key Benefits
✅ Engineered specifically for Komatsu QSB & QSL engines (2011–2021)
✅ Maintains precise turbo boost control under varying loads
✅ Helps improve throttle response and engine efficiency
✅ Designed to withstand vibration, thermal cycles, and rugged use
✅ Direct-fit OEM replacement for fast and correct installation
Applications
This turbo actuator is ideal for construction equipment, compact loaders, and machinery powered by Komatsu QSB or QSL diesel engines built between 2011 and 2021. Anywhere precise boost response is critical, this component plays a key role.
Installation Notes
Before installation, allow the engine to cool and disconnect the battery. Remove access covers and clean the actuator mounting area. Replace any worn seals or linkage components. Mount the new actuator and torque to Komatsu’s specifications. Reconnect wiring, zero the actuator as required by the engine control module, and test for proper boost response under load.
Final Thoughts
When turbo responsiveness and engine control matter, the OEM 5269797 turbo actuator delivers trustworthy performance. With direct-fit quality and rugged design, it helps your Komatsu’s turbocharger maintain proper boost behavior across all operating conditions. Tamerx has this part ready to ship.