811W25320-6001 represents the pinnacle of durability and optical precision for heavy-duty trucks. This Front Combination Lamp Assembly (Left) is engineered specifically for Howo/Sitrak truck parts compatibility, ensuring seamless fitment and long-lasting performance in the most demanding conditions. With advanced reflector technology and impact-resistant housing, this left-side lamp delivers superior visibility, safety, and a bold aesthetic for your fleet.
Every Front Combination Lamp Assembly (Left) undergoes rigorous photometric and thermal testing. The lens is UV-coated to prevent hazing, and the housing is made of high-grade ABS/PC blend. Whether you operate Howo, Sitrak, or compatible trucks, this left-side lamp ensures consistent illumination and meets ECE R112 regulations.
| Parameter | Specification |
|---|---|
| OEM Number | 811W25320-6001 |
| Position | Left (Driver side) |
| Type | Front combination lamp (low/high beam + turn + position) |
| Housing material | Polycarbonate + ABS |
| Lens material | PMMA, UV stabilized |
| Ingress protection | IP67 |
| Voltage | 24V DC (truck standard) |
| Bulb type | H7 / H1 (compatible with LED retrofit) |
| Weight | 2.1 kg (approx.) |
| Certification | ECE R112, DOT |
The engineering behind the 811W25320-6001 Front Combination Lamp Assembly (Left) focuses on three pillars: safety, durability, and optical clarity. Howo trucks operate in diverse environments – from scorching deserts to freezing tundra. This lamp assembly maintains its structural integrity and light output across that entire spectrum. The internal reflector is coated with a proprietary vacuum-deposited aluminum layer, ensuring 98% reflectivity. Combined with the multi-focal lens, it produces a homogeneous beam that reduces dark spots and enhances peripheral vision.
Fleet operators report a 30% reduction in night-time incidents after upgrading to this assembly. The sharp cut-off line prevents glare for oncoming traffic, while the wide-angle high beam illuminates road signs and obstacles earlier. The turn signal section uses a hyper-bright amber LED (optional) or standard 21W bulb, giving clear indication even in fog or rain.
Compared to aftermarket copies, genuine 811W25320-6001 offers precise optical alignment that matches the vehicle’s original lighting geometry. This reduces light scatter and ensures compliance with international road regulations. For fleet managers, this means fewer fines and happier drivers.
For workshops and parts suppliers, this lamp assembly reduces inventory complexity. With the OE number 811W25320-6001 clearly marked on the housing, cross-referencing is effortless. The left-side unit is symmetrically designed with the right-side counterpart, but always verify orientation before installation. The connector layout is standardized, yet we recommend checking the vehicle’s wiring diagram for absolute compatibility.
Each 811W25320-6001 assembly is manufactured in an IATF 16949 certified facility. The housing is injection-molded from a specially formulated PC/ABS alloy that resists UV degradation and chemical attack (diesel, brake fluid, salt). The lens is hard-coated with a silicon-based anti-scratch layer. Internal wiring uses tinned copper strands with high-temperature insulation (rated 125°C).
Quality control includes 100% leak testing, photometry verification, and vibration simulation (random 5–500 Hz, 10G). This ensures that every unit leaving the factory meets the strict standards required for commercial vehicle safety.
Logistics-friendly packaging: Each lamp is packed in a foam-lined carton with anti-static bag. Dimensions: 38x24x18 cm, gross weight 2.8 kg. Ideal for air or sea freight.
The Front Combination Lamp Assembly (Left) with OE number 811W25320-6001 is more than a spare part; it’s a safety investment. Howo and Sitrak owners around the world trust this component for its reliability and consistent performance. Whether you’re replacing a damaged unit or upgrading your fleet’s lighting, this assembly delivers exceptional value.
Advanced thermal management keeps the lamp housing cool even during prolonged use. The rear cover features a pressure-equalization vent that prevents moisture ingress while allowing pressure compensation. This design detail extends bulb life and maintains optical clarity over years of service.
Fleet maintenance teams appreciate the standardized fasteners and clear installation markings. The lamp’s adjustment screws are accessible from the front, enabling fine aiming without removing the assembly. This reduces service time and simplifies periodic inspections.
The part number 811W25320-6001 is referenced in Howo’s official spare parts catalog. For any technical inquiries, always refer to your vehicle’s VIN and existing lamp labeling to confirm compatibility. This assembly is not compatible with right-hand drive configurations that require asymmetric beam pattern; please order the corresponding right-side unit if needed.
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