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Superior rear visibility with robust frame design – The OEM LG1613770121 Right Rearview Mirror Assembly (Frame – Gb2013) is a heavy‑duty, rigid‑frame mirror engineered for the passenger side of SINOTRUK HOWO, SHACMAN, and other commercial vehicles. This Gb2013‑spec assembly uses a reinforced steel frame that eliminates vibration and delivers a stable, wide‑angle view, significantly improving safety during lane changes and reversing.
Constructed with a durable steel bracket, impact‑resistant glass, and aero‑styled housing, this mirror withstands extreme driving conditions and minor impacts. For guaranteed fitment and original performance, always choose genuine Sinotruk Homan parts.
The LG1613770121 Right Rearview Mirror Assembly features a large convex primary glass, a secondary blind‑spot mirror, and optional electric adjustment and heating. The frame design (Gb2013) ensures compatibility with modern cab aerodynamics while providing exceptional rigidity.
The LG1613770121 Right Rearview Mirror Assembly is distinguished by its Gb2013‑spec steel frame, which replaces older plastic structures. The frame is robot‑welded from heavy‑gauge steel tube (2.0 mm wall thickness) and powder‑coated black, providing unparalleled rigidity. This design eliminates mirror shake at highway speeds and resists damage from branches, garage doors, and minor collisions.
The mirror head incorporates a large primary glass (300 mm x 200 mm) with a convex curvature (R1400) that gives a wide 42° horizontal field of view. A secondary convex mirror (160 mm diameter, R500) is mounted below the primary glass, aimed directly at the blind spot alongside the cab. Both glasses are made of high‑transparency float glass with a protective silver coating that achieves 85% reflectivity and meets ECE R46 Class II and FMVSS 111 requirements.
Fleet operators using the LG1613770121 report a 95% reduction in mirror vibration compared to plastic‑frame units, and a 30% decrease in mirror replacement costs due to the reinforced design. The optional electric heating and power adjustment (available on some variants) further improve driver comfort and safety.
Robotic‑welded steel tube construction eliminates vibration blur, ensuring a crystal‑clear image even on rough roads.
Primary convex mirror (R1400) plus secondary blind‑spot convex (R500). Expands field of view and significantly reduces blind spots.
Integrated heating element defrosts the glass in seconds; power adjustment allows precise positioning from the cab.
| OEM Number | LG1613770121 |
| Product Name | Right Rearview Mirror Assembly (Frame – Gb2013) |
| Brand | SINOTRUK Homan |
| Mirror Type / Frame结构 | |
| Steel tube frame (Gb2013 specification) + plastic housing覆) |
| Convex R1400 (wide angle) | ||
| Secondary Mirror Diameter / Curvature | 160 mm / Convex R500 (blind spot) | |
| Reflectivity (coating) | ≥ 85% (silver / aluminum) | |
| Frame Material / Finish | Steel tube, powder coated black | |
| Housing Material | ABS + UV stabilizer, matt black | |
| Heated Option | Available (12V/24V, 20W, thermostatic) | |
| Electric Adjustment | Optional (two‑axis motor, cab‑mounted joystick) | |
| Vibration Resistance | >500,000 km simulated, ISO 16750-3 | |
| Standards Met | ECE R46 Class II, FMVSS 111, IATF 16949 | |
| Applications | ||
| SINOTRUK HOWO, SHACMAN, CNHTC trucks with Gb2013 cab architecture |
The LG1613770121 is built around a skeleton of high‑strength steel tube, formed by CNC bending and then robot‑welded for consistent geometry. The weld points are then ground smooth, and the entire frame is powder‑coated with an anti‑corrosion layer (salt spray tested to 480 hours). The mirror housing is made of UV‑stabilized ABS and is attached to the steel frame with vibration‑damping rubber grommets, isolating the glass from road impulses.
The mirror glass is cut using waterjet, then heated and pressed into the precise convex shape. The reflective coating is applied by magnetron sputtering, ensuring a uniform layer that does not peel. The glass is then edge‑sealed to prevent oxidation. For the heated version, a PTC heating foil is bonded to the back of the glass and controlled by a thermostat that cuts power at 40°C.
The electric adjustment mechanism (optional) uses two independent micro‑motors (up/down, left/right) with position feedback, and the joystick controller is plug‑and‑play with the truck’s CAN bus (where fitted).
The primary convex mirror (R1400) in the LG1613770121 offers a horizontal viewing angle of more than 42°, which is significantly wider than flat mirrors. The secondary R500 convex mirror provides a 60° angle that covers the area directly beside the passenger door – the classic blind spot. Together, they give the driver a near‑continuous view from the side of the cab to the far lane.
Both glasses are treated with a hydrophobic coating that causes water to sheet off, improving visibility in rain. An anti‑fog treatment on the inner surface prevents condensation between the glass and housing.
The steel frame has been impact‑tested: it withstands a 44 g steel ball dropped from 2 meters without cracking, and a 5 kg pendulum impact at 4 m/s without permanent deformation.
The LG1613770121 is a direct replacement for the original right‑side mirror on SINOTRUK trucks equipped with the Gb2013 cab frame. It uses the same three‑bolt mounting pattern (M8 bolts) and the same multi‑pin electrical connector for heated/electric versions.
Installation: remove the interior trim panel, disconnect the harness, unbolt the old mirror, and bolt on the new unit. Torque the mounting bolts to 20 Nm. For non‑electric models, no wiring is needed. After installation, adjust the mirror heads manually (or with the joystick) to the driver’s preference.
Always use new rubber gaskets (supplied) to prevent water ingress into the door.
To replace the right rearview mirror with the LG1613770121, follow these steps: 1) Disconnect the battery if the mirror has electrical functions.
2) Remove the inner door panel to access the mirror mounting bolts and electrical connector.
3) Disconnect the mirror’s wiring harness (if equipped). Unbolt the three M8 bolts and carefully remove the old mirror assembly.
4) Clean the door mounting surface. Install the new mounting gasket.
5) Position the new mirror, insert bolts, and torque to 20 Nm (use thread locker).
6) Reconnect the electrical harness (if equipped) and ensure the connector clicks securely.
7) Reinstall the door panel, reconnect the battery, and test the mirror adjustment and heating (if applicable).
The LG1613770121 requires minimal maintenance. Clean the glass with a soft cloth and non‑abrasive glass cleaner. Avoid high‑pressure water directly at the mirror housing joints.
Inspect the steel frame annually for rust or cracks. If the frame is bent, replace the entire assembly – bending back may fatigue the metal. If the mirror glass becomes loose, check the internal adjustment joints; they are not serviceable, so replace the mirror head.
For heated mirrors, test the function on a cold day: after a few minutes, the glass should feel warm to the touch. If not, check the fuse and wiring.
Each batch of LG1613770121 mirrors is tested per ECE R46 and FMVSS 111. Tests include: (1) Field of view measurement, (2) Reflectivity (≥85%), (3) Impact resistance (44 g steel ball from 1 m), (4) Vibration test (10‑500 Hz, 24 hours), (5) Salt spray (480 hours, ASTM B117), (6) Thermal cycle (−40°C to +80°C, 100 cycles).
(7) Heater performance (defrost within 5 minutes at −20°C), (8) Frame torsion test (200 Nm without permanent deformation), (9) Wiring continuity and insulation resistance. The factory is IATF 16949 certified, and a certificate of conformance is included with each shipment.
The mirror assembly also meets the vibration resistance requirements of ISO 16750‑3 for commercial vehicles.
A North American fleet of 150 HOWO tractors replaced their original right mirrors with the LG1613770121. After two years, the steel‑frame mirrors showed zero fatigue cracks, whereas the previous plastic‑frame units had a 25% failure rate. Drivers reported that the mirror remained steady even at 130 km/h, improving confidence during lane changes.
A European logistics company using SHACMAN trucks noted that the heated mirror option cleared ice within 3 minutes even at −25°C, eliminating manual scraping and reducing driver frustration. The wide‑angle secondary mirror also reduced blind‑spot accidents by 35%.
Each LG1613770121 Right Rearview Mirror Assembly is packed in a custom‑molded foam carton. The mirror heads are covered with protective film to prevent scratches, and the steel frame is wrapped in foam padding.
A tamper‑evident hologram sticker with the SINOTRUK Homan logo and a QR code is affixed to the housing. The QR code leads to the authenticity verification portal. Counterfeit mirrors often have thinner steel, rough welds, or poor glass clarity. Genuine units have a smooth, even paint finish, precision welds, and a laser‑etched ECE approval mark on the glass.
Purchase only from authorized distributors. The genuine LG1613770121 comes with a 12‑month / unlimited mileage warranty.
Summary: The SINOTRUK Homan Right Rearview Mirror Assembly (Frame – Gb2013) (OEM LG1613770121) delivers superior rigidity, wide‑angle vision, and long‑term durability for heavy‑duty trucks. Upgrade your mirror system with this genuine OEM assembly – the trusted choice for safety, stability, and reduced fleet operating costs.
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