- ADDRESS:Jinan City, Shandong Province
- Wanda Plaza, Jinan, Shandong, China
- +8617615809553
- info@deruna.com


For enhanced driver visibility and road safety in demanding environments, genuine Sinotruk howo parts are essential. The 712W63730-7021/712W63730-7025 Rearview Mirror is a precision-engineered safety component that provides a wide, distortion-free rear view, enabling confident maneuvering and lane changes. Constructed with high-impact ABS housing, a durable glass mirror with anti-glare coating, and robust adjustment mechanisms, this mirror withstands vibrations, extreme temperatures, and road debris. The 712W63730-7021/712W63730-7025 mirror is available in two variants (left and right) to cover both sides, ensuring a complete replacement solution for SINOTRUK HOWO heavy-duty trucks. With its exact OEM fitment and premium optics, this rearview mirror enhances driver confidence and reduces blind spots, contributing to safer fleet operations.
OEM references 712W63730-7021 (left) and 712W63730-7025 (right) – direct-fit rearview mirror set for SINOTRUK HOWO.
Rearview Mirror (EN)
Зеркало заднего вида (RU)
Espejo retrovisor (ES)
The rearview mirror is a critical safety device that provides the driver with a clear view of the area behind and beside the vehicle. The 712W63730-7021/712W63730-7025 mirror features a high-quality glass element with a specialized anti-glare coating that reduces headlight glare from following vehicles, improving night driving comfort. Its convex design offers a wider field of view, minimizing blind spots and aiding in safe lane changes and reversing.
The mirror housing is constructed from impact-resistant ABS plastic, providing excellent structural integrity and protection against stone chips and minor impacts. The internal pivot mechanism allows for smooth, precise adjustment, enabling the driver to easily set the optimal viewing angle. The 712W63730-7021/712W63730-7025 mirror is a durable, long-lasting replacement that restores full visibility and safety.
The convex mirror design significantly expands the field of view, reducing blind spots and improving situational awareness during lane changes and reversing.
The glass is treated with a reflective coating that reduces glare from headlights, ensuring clear vision and reduced eye strain during night driving.
The ABS plastic housing is tough and durable, protecting the mirror glass from damage caused by stones, debris, and minor collisions.
The set includes both left (712W63730-7021) and right (712W63730-7025) mirrors, providing a complete replacement solution for both sides of the vehicle.
The engineering of the 712W63730-7021/712W63730-7025 rearview mirror focuses on optical clarity and mechanical reliability. The glass is precision-ground to ensure a distortion-free reflection, while the convex curvature is carefully optimized to provide a balanced view that maximizes coverage without compromising depth perception. The mirror head is mounted on a sturdy ball-joint mechanism that allows smooth adjustment in multiple axes, maintaining its position even during rough road conditions. The housing includes integrated aerodynamic features that reduce wind noise and vibration at highway speeds, contributing to a quieter cabin environment.
Installation is straightforward: remove the old mirror assembly by unbolting it from the door or bracket, transfer any necessary mounting hardware, and install the new mirror using the original fasteners. Ensure the electrical connections (if heated or power-adjustable models) are plugged in. After installation, adjust the mirror to the desired angle and test the adjustment mechanism. Always check that the mirror is securely fastened before driving. A genuine OEM mirror ensures correct fitment and optical quality, enhancing safety and driving comfort.
| OEM Part Numbers | 712W63730-7021 (Left) / 712W63730-7025 (Right) |
| Product Name | Rearview Mirror (Door Mirror) |
| Brand / Application | SINOTRUK HOWO (Heavy-duty trucks) |
| Mirror Glass Dimensions | Approx. 300 x 200 mm (each) |
| Coating | Anti-glare, reflective |
| Housing Material | Impact-resistant ABS plastic |
| Adjustment Type | Manual (standard) / Power-adjustable (optional variant) |
| Operating Temperature | -40°C to +85°C |
| Weight (each) | Approx. 2.5 kg (5.5 lbs) |
All dimensions and specifications are verified against SINOTRUK HOWO factory standards. Manufactured under ISO 9001:2015 quality control.
Over time, rearview mirrors can suffer from cracked glass, broken housings, or worn adjustment mechanisms due to impacts, vibration, or environmental exposure. A damaged mirror compromises driver visibility, increasing the risk of accidents. Replacing it with the 712W63730-7021/712W63730-7025 set restores full visibility and safety. It is recommended to inspect mirrors regularly and replace them at the first sign of damage or if the adjustment becomes stiff or loose.
Fleet operators have noted that replacing worn mirrors with the OEM set significantly improves driver confidence and reduces blind-spot-related incidents. The 712W63730-7021/712W63730-7025 mirrors offer superior clarity and durability, making them a cost-effective investment in safety. Regular cleaning and inspection can extend their service life, but replacement is essential when the glass becomes cloudy or the housing is cracked.
Clean the mirror glass regularly using a mild glass cleaner and a soft cloth to remove dirt and residue. Avoid abrasive cleaners that can scratch the reflective coating. Inspect the housing for cracks or looseness and ensure the adjustment mechanism operates smoothly. Check the mounting bolts for tightness and re-torque if necessary. If the mirror is heated, verify the electrical connection and function.
If the mirror becomes loose or the glass becomes cloudy, replace it immediately with the 712W63730-7021/712W63730-7025 set. Always use genuine OEM parts to ensure proper fitment and optical quality. A clear, well-adjusted mirror is essential for safe driving, especially in heavy traffic or adverse weather conditions.
Cracked or shattered glass
Loose or wobbly mirror head
Difficulty adjusting or holding position
If you notice any of these signs, inspect the mirror assembly and replace it with the 712W63730-7021/712W63730-7025 set immediately. Do not attempt to repair a cracked glass with tape or adhesive, as this compromises visibility. A genuine OEM mirror ensures that you have a clear, reliable view of the road, protecting you and other road users.
Summary: The 712W63730-7021/712W63730-7025 Rearview Mirror is a critical safety component for SINOTRUK HOWO trucks, offering superior visibility, durability, and precise adjustment. With its OEM fitment and dual-variant coverage, this mirror set is the ideal replacement for worn or damaged mirrors. Choose genuine quality to enhance driver confidence and road safety.