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The WG9719720025-26 Left And Right Halogen Lamps are a high-performance, direct-fit lighting pair designed for the front lighting system of SINOTRUK Howo heavy-duty trucks. As a leading supplier of genuine Sinotruk howo parts, we offer this OEM-grade halogen lamp set as a complete replacement for both left and right headlamp assemblies. The WG9719720025-26 lamp set provides bright, consistent illumination with a color temperature of 3200K, delivering excellent road visibility in all weather conditions – from clear nights to heavy rain and fog. Manufactured with high-quality quartz glass, precision-filament technology, and a durable P20d base, these halogen lamps resist vibration, thermal shock, and premature burnout, ensuring long-lasting performance and reduced maintenance costs.
The WG9719720025-26 halogen lamps are engineered to produce a focused, symmetrical beam pattern that complies with ECE and DOT regulations, maximizing forward visibility without dazzling oncoming traffic. This matched pair ensures balanced light output on both sides, enhancing driver confidence and safety during nighttime and low-visibility operations.
OEM direct replacement (left & right set) • High-lumen halogen technology • Quartz glass & precision filament • ECE/DOT compliant • Plug-and-play installation
The WG9719720025-26 is a matched pair of halogen lamps (left and right) designed for the front headlight assemblies of SINOTRUK Howo A7 and T7H series trucks. This set includes two identical lamps that serve as direct replacements for the factory-original H7 or H4 halogen bulbs, depending on the specific headlight housing. The OEM-grade lamps replicate the original wattage, base type, and light output characteristics, ensuring a seamless swap that restores full lighting performance.
Each lamp in the WG9719720025-26 set is constructed with a high-purity quartz glass envelope that withstands extreme thermal shock – from sub-zero winter starts to high-temperature operation in desert climates. The precision-wound tungsten filament is supported by multiple anchoring points to resist vibration and shock, common in heavy-duty truck applications. The lamps are filled with a halogen gas mixture (iodine and bromine compounds) that promotes the tungsten-halogen cycle, redepositing evaporated tungsten back onto the filament and significantly extending bulb life compared to standard incandescent bulbs.
The WG9719720025-26 halogen lamps produce a crisp, bright white light (3200K) that closely replicates natural daylight, reducing driver fatigue and improving contrast for better detection of obstacles, pedestrians, and road markings. Their focused beam pattern ensures that light is directed precisely where it is needed – on the road ahead and to the sides – without creating glare for oncoming drivers, thanks to precise filament placement and shield design that meets ECE R37 and DOT FMVSS 108 standards.
This set is a popular choice for both routine maintenance (replacing dim or burned-out bulbs) and for upgrading from older, less efficient lighting technologies. The matched pair ensures consistent brightness and color on both sides, preventing the “one bright, one dim” appearance that can reduce overall night vision and vehicle aesthetics.
The WG9719720025-26 halogen lamp set is specifically engineered for the front headlight assemblies of SINOTRUK Howo A7 and T7H series trucks, including models ZZ4257, ZZ3257, and other variants equipped with H7 or H4 halogen headlights. This set serves as a direct replacement for the original factory bulbs, restoring full lighting performance without any modifications to the housing or wiring.
These lamps are suitable for both low-beam and high-beam functions, depending on the specific headlight configuration. In most Howo trucks, they are used for the main low-beam headlights, but they can also be used in auxiliary driving lamps or fog lights if the base type and wattage match. The WG9719720025-26 set is a popular choice for fleets performing regular lighting maintenance, as well as for owner-operators looking to upgrade from older, worn-out bulbs that produce dim, yellowed light.
In demanding applications such as long-haul transport, regional distribution, construction, and emergency services, headlight reliability is paramount. The WG9719720025-26 halogen lamps are designed to handle the constant vibration, temperature fluctuations, and voltage spikes common in heavy-duty trucks, ensuring consistent light output and a long service life.
When replacing bulbs, always verify the bulb type (H7 vs. H4) and the wattage rating of your vehicle’s headlight system. The WG9719720025-26 set covers the majority of Howo A7 and T7H applications, but it is always advisable to check your owner’s manual or the existing bulb for confirmation. For fleets, this set simplifies inventory by providing a single SKU for both left and right sides.
Installing the WG9719720025-26 halogen lamps is a quick and straightforward process that can be completed in under 15 minutes per side. Start by opening the hood and locating the rear access cover of the left headlight assembly. Twist the cover counterclockwise to remove it, then disconnect the electrical connector from the old bulb.
Carefully release the retaining spring or clip that holds the bulb in place, then gently pull the old bulb straight out without touching the glass envelope – oils from your skin can create hot spots and shorten bulb life. If you do touch the glass, clean it with isopropyl alcohol and a lint-free cloth.
Insert the new WG9719720025-26 bulb into the housing, ensuring that the alignment tabs match the slots. Secure the retaining spring or clip, reconnect the electrical plug, and replace the access cover. Repeat the process for the right side. Always replace both lamps simultaneously to ensure balanced light output and color.
For maintenance, regularly inspect your headlights for signs of dimming or discoloration, which indicate that the bulb is nearing the end of its life. Keep the headlight lenses clean and free of dirt and oxidation to maximize light output. When replacing bulbs, consider upgrading to the WG9719720025-26 set to ensure you have fresh, bright lighting on both sides.
Avoid touching the glass of any halogen bulb during installation, as this can cause premature failure. If you must handle the bulb, use clean gloves or a tissue. The WG9719720025-26 lamps are designed for long life, but rough roads, electrical fluctuations, and moisture ingress can shorten their lifespan – regular checks are recommended.
The WG9719720025-26 Left And Right Halogen Lamps are manufactured in an ISO 9001-certified facility using state-of-the-art automated production lines. Each lamp is assembled with high-purity quartz glass, precision-drawn tungsten wire, and a halogen gas mixture that is precisely dosed to ensure consistent performance and longevity.
Every batch of lamps undergoes rigorous quality testing, including luminous flux measurement, color temperature verification, vibration testing (15 G for 100 hours), and thermal shock testing (alternating between -40°C and +120°C). The beam pattern is checked on a photometric bench to ensure compliance with ECE R37 and DOT FMVSS 108 standards, guaranteeing that the light output is safe and legal.
We back the WG9719720025-26 with a comprehensive warranty against material and workmanship defects. Our quality control ensures that every lamp delivers the same brightness, color, and durability as the original SINOTRUK Howo part, giving you confidence in your truck’s nighttime visibility.
Choose genuine quality for your lighting maintenance – choose the WG9719720025-26 Left And Right Halogen Lamps.
The WG9719720025-26 Left And Right Halogen Lamps are essential for maintaining safe, reliable nighttime visibility in your SINOTRUK Howo. Dim, yellowed, or burned-out headlights not only compromise your ability to see the road ahead but also make your truck less visible to other drivers, increasing the risk of collisions – especially in poor weather or on unlit highways.
By replacing both sides with this genuine OEM-grade halogen set, you restore the original brightness, beam pattern, and color consistency that your truck’s lighting system was designed to deliver. The 3200K light output closely mimics natural daylight, reducing eye strain and improving reaction times when encountering obstacles, animals, or sudden stops ahead.
Fleet managers will appreciate the matched-pair design that ensures uniform appearance and performance across the entire fleet, simplifying inspections and reducing the number of bulb-related callbacks. Owner-operators will gain peace of mind knowing that their headlights meet international safety standards and that they have taken a simple, cost-effective step to enhance their truck’s safety and professionalism.
Invest in the WG9719720025-26 Left And Right Halogen Lamps and illuminate your SINOTRUK Howo with the same quality that the manufacturer intended. Their bright output, vibration-resistant construction, and long lifespan make them the smart choice for drivers who refuse to compromise on safety or visibility.
Order your WG9719720025-26 set today and ensure your HOWO truck’s headlights deliver the bright, reliable performance you need for safe, confident driving in any condition.
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