

Restore seamless window operation in your Sinotruk truck with the genuine Sitrak Left Door Power Window Regulator, a critical component for driver comfort and vehicle functionality. This assembly ensures reliable electric window control in the left door of narrow-body Sitrak cabs, providing smooth and durable performance. As part of maintaining your heavy-duty vehicle, investing in authentic Sinotruk Sitrak parts guarantees compatibility, safety, and longevity, avoiding the pitfalls of generic aftermarket alternatives that may fail under rigorous use.
The Sitrak Left Door Power Window Regulator is an OEM-designed mechanical system that facilitates the vertical movement of the driver-side window glass in Sinotruk Sitrak trucks. It consists of a motor-driven regulator mechanism, guide rails, seals, brackets, and all necessary hardware, working together to convert electrical energy from the window switch into smooth, controlled linear motion for the glass pane.
This regulator is electrically powered, integrating with the vehicle’s electrical system to provide effortless window control. With a simple press of a button, the driver can raise or lower the left door window, enhancing convenience and safety during operations such as toll payments, ventilation, or communication. The electric design ensures consistent performance and reduces physical effort compared to manual cranks.
The product is offered as a comprehensive kit that includes not just the regulator unit but also essential supporting parts. These include front and rear guide rails for precise glass alignment, seal strips to prevent water and noise ingress, connection plates for structural integrity, a water shield plate, mounting brackets, and all required screws and bolts for a complete installation.
Engineered specifically for Sinotruk Sitrak narrow-body truck models, this left-door regulator is tailored to fit the exact dimensions and mounting points of the original equipment. This ensures perfect compatibility with the door frame, window glass, and electrical connectors, restoring factory-like performance and reliability for long-term use in demanding commercial environments.
| No. | Part Number | Part Name English | Quantity |
|---|---|---|---|
| 1 | MQ6W02259-0002 | Hexagonal Flange Bolt (M8) | 10 |
| 2 | 711W62651-0115 | Left Door Glass Front Guide Rail | 1 |
| 3 | 810W62651-0087 | Door Glass Front Guide Rail Seal Strip | 1 |
| 4 | 810W62651-0088 | Door Glass Rear Guide Rail Seal Strip | 1 |
| 5 | 711W62640-6061 | Connection Plate Assembly | 2 |
| 6 | 711W62651-0057 | Left Door Glass Rear Guide Rail | 1 |
| 7 | 711W62645-0032 | Left Water Shield Plate | 1 |
| 8 | 711W62645-6051 | Left Door Power Window Regulator | 1 |
| 9 | Q2300616F31 | Cross Recessed Pan Head Screw and Flat Washer Assembly | 3 |
| 10 | MQ6W07212-4309 | Plastic Hexagonal Self-tapping Screw M3299-D-6X14-ST-MAN 183-B1 | 2 |
| 11 | 711W62645-0011 | Door Glass Bracket | 1 |
This table lists all components included in the Sitrak Left Door Power Window Regulator assembly kit for comprehensive replacement.
Our regulator is manufactured to exact Sinotruk OEM standards, ensuring perfect fit, function, and durability. Every component, from the guide rails to the bolts, matches the original part numbers and specifications, guaranteeing seamless integration with your truck’s left door assembly. This eliminates guesswork and ensures reliable performance that meets factory safety and quality benchmarks.
We provide a full kit that includes all necessary parts for a complete regulator replacement. This saves time and cost by avoiding the need to source individual components separately. Mechanics can perform the repair in one go, reducing vehicle downtime and ensuring all elements—like seals and hardware—are new and compatible, leading to a longer-lasting repair.
Built for commercial trucking environments, this regulator uses robust materials such as high-strength steel for rails and corrosion-resistant coatings. It is designed to withstand frequent use, vibration, and harsh weather conditions, ensuring smooth window operation over thousands of cycles. The Sitrak Left Door Power Window Regulator inclusion of quality seals and shields further protects against water and dust ingress.
A reliably functioning left-door window is essential for driver convenience and safety. Our regulator ensures quiet, effortless operation, allowing easy control for ventilation, communication, and emergency situations. By restoring factory-like performance, it reduces driver distraction and enhances the overall cabin experience, contributing to safer and more efficient truck operations.
The Sitrak Left Door Power Window Regulator stands as the definitive choice for maintaining or repairing the driver-side window system in your Sinotruk Sitrak truck. By combining OEM quality, comprehensive part coverage, and heavy-duty construction, it addresses common issues like slow movement, glass misalignment, or complete failure. This assembly not only restores functionality but also prolongs the life of the window system, preventing costly future repairs.
For fleet managers and individual owners, investing in this genuine part ensures compliance with vehicle specifications and maximizes return on investment through reduced maintenance frequency. The kit’s inclusivity simplifies logistics and installation, making it a practical and reliable solution for workshops worldwide. When paired with professional installation, the Sitrak Left Door Power Window Regulator delivers peace of mind and uninterrupted performance on the road.
Symptoms indicating the need for this regulator include unusual noises during window operation, the window glass slipping or tilting, slow response to switch commands, or complete immobility. Addressing these promptly with our kit prevents secondary damage to the door panel, motor, or electrical system, safeguarding your vehicle’s value and operational readiness.
Associated Products: Sitrak Right Door Power Window Regulator, Sinotruk Window Switch, Truck Door Seal Kit, Heavy-Duty Window Motor, Cab Interior Trim Parts
Always consult your vehicle manual or a certified technician for installation guidance. This product is designed for Sinotruk Sitrak narrow-body truck models for optimal performance.
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.