ECM ECU 4921776 Electronic Excavator Controller with QSB6.7 Engine For Komatsu Hyundai XCMG & LiuGong

4921776 ECM ECU Electronic Control Module for QSB6.7 Engine | Programmed ECU for Komatsu Hyundai XCMG LiuGong

Buy 4921776 ECM ECU Electronic Control Module compatible with QSB6.7 engines. Programmed and ready for use. Suitable for Komatsu, Hyundai, XCMG and LiuGong construction equipment. Worldwide shipping and technical support available.

The 4921776 Electronic Control Module (ECM/ECU) is a high-performance engine management controller designed for QSB6.7 diesel engines. It is widely used in excavators, wheel loaders, road machinery, mining equipment, and industrial applications from Komatsu, Hyundai, XCMG, LiuGong, and other OEM manufacturers. The 4921776 controller is commonly associated with QSB6.7 and related CM850 engine control platforms.

Product Name: Electronic Control Module (ECM / ECU)

Part Number:

• 4921776
• P4921776
• 4921776RX
• 4921776NX

Engine Model:

• QSB6.7
• QSB4.5
• QSC8.3
• QSL9

Control Platform:

• CM850 Engine Management System

Condition Available:

• Genuine Original
• Remanufactured
• OEM Replacement

The 4921776 ECM is listed for multiple engine families including QSB6.7, QSB4.5, QSC8.3 and QSL9 applications.

Software can be matched according to the engine serial number and machine information before shipment, allowing easier installation and reducing downtime.

Optimizes fuel delivery, engine timing, and operating efficiency for reliable performance.

Manufactured and tested to ensure stable operation under demanding construction and mining environments.

Supports fault code management, engine protection functions, and communication with machine control systems.

Every ECU is inspected before shipment to ensure dependable performance.

Suitable for machines powered by QSB6.7 engines, including:

• PC200-8
• PC220-8
• PC300-8
• D65 Series
• Other -powered models

• R-Series Excavators
• HX-Series Excavators
• -powered Hyundai Equipment

• Excavators
• Wheel Loaders
• Road Construction Equipment

• Excavators
• Loaders
• Mining Equipment

Various suppliers list 4921776 for Komatsu excavators and -powered construction equipment applications.

The 4921776 Engine Control Module serves as the central computer of the engine management system and controls:

• Fuel Injection Timing
• Fuel Quantity Management
• Turbocharger Coordination
• Engine Protection Functions
• Emission Control Systems
• Sensor Data Processing
• Diagnostic Communication
• Power Output Optimization

The ECM continuously processes engine operating data and adjusts performance parameters in real time.

We supply:

• ECM & ECU Controllers
• Caterpillar ECM Modules
• Volvo ECU Controllers
• Complete Wiring Harnesses
• Monitors & Display Panels
• Solenoid Valves
• Diagnostic Tools

✔ Program Matching Support

✔ Fast Global Shipping

✔ Professional Technical Assistance

✔ Competitive Wholesale Pricing

✔ Extensive Inventory Available

✔ One-Stop Construction Machinery Parts Supply

⚠ To ensure the correct program and configuration, please provide:

• Engine Serial Number (ESN)
• Engine Nameplate Photo
• Original ECM Part Number
• Machine Model
• Existing Controller Label Photo

Our engineers will verify compatibility and install the correct calibration before shipment.

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