The 24V70W-H4 Headlight Bulb (24V70WH4) from HOWO is engineered to deliver exceptional illumination, outstanding longevity, and a precise factory fit, ensuring that your truck’s headlights provide superior visibility and safety on every journey. As a critical Howo/Sitrak truck parts component, this high‑performance halogen bulb is manufactured to the exacting standards of the original equipment, offering reliable 24V 70W output with a standard H4 base. Whether you are replacing a burnt‑out bulb or upgrading your lighting system, the 24V70W-H4 guarantees brilliant light output, extended service life, and consistent performance – making it the trusted choice for professional workshops and fleet operators worldwide.
The headlight bulb is the primary source of forward illumination, directly impacting driver visibility and safety during night driving, inclement weather, and low‑light conditions. The 24V70W-H4 is specifically designed for heavy‑duty trucks, delivering a powerful 70W output that produces a bright, focused beam to illuminate the road ahead. A dim or failed bulb can significantly reduce visibility, increasing the risk of accidents. HOWO has engineered this bulb with a high‑efficiency dual‑filament design, enabling both low and high beam functions in a single package. The quartz glass envelope resists heat and vibration, ensuring consistent light output over its service life. The precise H4 base guarantees a secure, vibration‑resistant connection, preventing flickering and premature failure. With the 24V70W-H4, you restore optimal headlight performance, enhancing safety and driver confidence on every journey.
Bright Beam
70W Power
Vibration Resistant
Quartz Glass
OEM Grade
Genuine HOWO
Easy Install
Plug & Play
Accurate engineering data ensures correct selection and installation. The 24V70W-H4 is manufactured to the highest OEM standards, guaranteeing a seamless replacement for your HOWO headlight system.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 24V70W-H4 | Exact Match |
| Part Name | Headlight Bulb (24V70WH4) | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / Heavy‑Duty Trucks | Headlight / Driving light |
| Voltage | 24V DC | Truck electrical system |
| Power | 70W | High output |
| Base Type | H4 (P43t) | Standard dual‑filament |
| Luminous Flux (Low Beam) | 1650 lumens | Excellent brightness |
| Luminous Flux (High Beam) | 2100 lumens | Maximum visibility |
| Color Temperature | 3200 K | Warm white |
| Average Life | 300 hours (T3 rating) | Long‑lasting |
| Operating Temperature | -40°C to +120°C | Wide range |
| Weight | 0.02 kg | Lightweight |
| Warranty | 12 Months | Manufacturer Guarantee |
The 24V70W-H4 is produced using advanced filament technology and precision manufacturing. The high‑efficiency dual tungsten filaments are precisely positioned within the quartz glass envelope to ensure optimal light distribution and focus for both low and high beam functions. The quartz glass is UV‑treated to resist darkening and maintain high light output over its lifetime. The bulb’s robust construction includes a reinforced base that resists corrosion and ensures a secure electrical connection, even in high‑vibration environments. Each bulb is tested for lumen output, beam pattern, and durability, guaranteeing that the 24V70W-H4 meets HOWO’s stringent quality standards. This engineering excellence translates into a headlight bulb that provides brilliant, consistent illumination, enhancing nighttime visibility and safety.
The 24V70W-H4 is specifically designed for HOWO heavy‑duty trucks, including T7H, A7, and derivative models, as a direct replacement for the original headlight bulb. It is also compatible with many Sinotruk and other commercial vehicles that use the H4 base (P43t) in their headlight systems. To confirm fitment, always cross‑reference the OEM number on your existing bulb with 24V70W-H4. If they match, this component will integrate seamlessly. Keeping this bulb in your spare parts inventory ensures rapid headlight repairs, minimising downtime and preserving the safety and performance of your vehicle’s lighting system.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
H4 Base
Standard Fitting
Direct Replacement
No Mods
Replacing a dim or failed headlight bulb with the 24V70W-H4 immediately restores the brightness and focus of your headlights. The 70W power output delivers a significantly brighter beam compared to lower‑wattage alternatives, improving visibility and reducing driver fatigue during night driving. The precise beam pattern ensures that the light is directed where it is needed most, without causing glare to oncoming traffic. The robust construction and vibration‑resistant design ensure that the bulb maintains its performance over time, reducing the frequency of replacements. For fleet operators, reliable headlight bulbs improve safety, reduce the risk of accidents, and help maintain compliance with lighting regulations. By investing in the 24V70W-H4, you ensure that your HOWO truck’s headlights deliver the illumination and reliability that professional drivers and fleet managers depend on.
Installing the 24V70W-H4 headlight bulb is a straightforward procedure. Begin by safely disconnecting the vehicle’s battery to avoid any electrical shorts. Access the headlight assembly and remove the old bulb by carefully unplugging the connector and releasing the retaining clip. Handle the new bulb with care, avoiding contact with the glass envelope – any oil or dirt on the glass can cause hot spots and premature failure. If you touch the glass, clean it with rubbing alcohol and a lint‑free cloth. Insert the new bulb into the headlight housing, ensuring it is correctly seated, and secure the retaining clip. Reconnect the electrical connector and reattach the battery. Test the headlight operation and adjust the beam alignment if necessary. Periodically inspect the bulbs for signs of darkening or dimming, and replace them in pairs for consistent light output. With proper installation, the 24V70W-H4 will provide years of reliable illumination.
Pro Tip: When replacing a headlight bulb, always handle the new bulb by its base or metal cap. The 24V70W-H4 is a precision component; proper handling ensures maximum light output and service life. Replacing both headlight bulbs simultaneously ensures balanced lighting and uniform beam pattern.
Genuine HOWO components are engineered to the highest standards, and the 24V70W-H4 headlight bulb is no exception. Aftermarket bulbs often use inferior filaments, lower‑quality glass, or imprecise base dimensions, leading to reduced brightness, short life, and poor beam focus. HOWO’s bulb is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 24V70W-H4, you benefit from HOWO’s rigorous testing, including luminous flux, vibration, and temperature endurance tests. This ensures that the bulb meets the demanding requirements of heavy‑duty trucking. Moreover, genuine parts are backed by a comprehensive warranty and supported by HOWO’s global network, giving you confidence in your purchase.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the 24V70W-H4 headlight bulb?
A: The 24V70W-H4 is designed for HOWO T7H, A7, and other heavy‑duty trucks, as well as many Sinotruk models that use the H4 (P43t) base in their headlights.
Q: What are the symptoms of a failing headlight bulb?
A: Dim or flickering light, a dark spot on the road, or a completely non‑functional headlight are common indicators.
Q: Can I upgrade to a higher wattage bulb?
A: It is not recommended as higher wattage may overload the vehicle’s wiring and cause heat damage. The 24V70W-H4 is specifically designed to match the original equipment specifications for optimal performance and safety.
Q: How do I verify the correct part?
A: Check the OEM number on your existing bulb. If it matches 24V70W-H4, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 24V70W-H4 Headlight Bulb today! Explore our complete selection of genuine HOWO and Sinotruk lighting components at Howo/Sitrak truck parts and ensure your truck illuminates the road with confidence.
The 24V70W-H4 Headlight Bulb from HOWO is a testament to precision lighting engineering and uncompromising quality. By choosing this genuine component, you ensure that your truck’s headlights deliver the bright, reliable illumination required for safe and confident night driving. Whether you are a professional mechanic or a fleet manager, this bulb offers the performance, durability, and exact fit that you can count on. Trust HOWO – the benchmark for excellence in heavy‑duty truck components – and experience the difference that genuine quality makes.
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