The electrical distribution box is the nerve centre of your vehicle’s electrical system, intelligently managing and protecting every circuit from the engine to the cabin. The 179100770391 Distribution box from HOWO is engineered to deliver flawless power distribution, robust circuit protection, and a precise factory fit, ensuring that your truck’s electrical systems operate with maximum reliability and safety. As a critical Howo/Sitrak truck parts component, this distribution box is manufactured from high‑grade, heat‑resistant materials with precision‑moulded terminals and integrated fuses or relays, providing a secure, corrosion‑resistant hub for all your critical electrical connections. Whether you are replacing a damaged unit or upgrading your electrical infrastructure, the 179100770391 guarantees a perfect factory fit, consistent power delivery, and extended component life – making it the trusted choice for professional workshops and fleet operators worldwide.
The distribution box serves as the central hub for your vehicle’s electrical system, routing power from the battery and alternator to all the essential components – lights, wipers, ECU, sensors, and more. The 179100770391 is specifically designed to provide a secure, organized, and easily serviceable interface for all these connections, protecting them from short circuits, overloads, and corrosion. A faulty or degraded distribution box can lead to intermittent electrical faults, complete system failures, and even fire hazards. HOWO has engineered this distribution box with a robust housing that resists moisture, dust, and vibration, and high‑quality terminals that maintain a tight, low‑resistance connection. The integrated fuse and relay layout follows the original schematic, ensuring that every circuit is protected to the correct specification. With the 179100770391, you restore the original electrical integrity, reduce diagnostic time, and ensure that your HOWO truck remains reliable, safe, and ready for the road.
Centralised Power
Efficient Distribution
Circuit Protection
Integrated Fuses
OEM Fit
Exact Match
Weather Sealed
Dust & Moisture
The 179100770391 distribution box is manufactured to the highest OEM standards, incorporating advanced materials and precision engineering. Below are the complete technical specifications for this essential electrical component.
| Parameter | Specification | Detail |
|---|---|---|
| OEM Number | 179100770391 | Exact Match |
| Part Name | Distribution Box | HOWO Genuine |
| Brand | HOWO | Original Equipment |
| Application | HOWO T7H / A7 / Heavy‑Duty Trucks | Electrical hub |
| Housing Material | High‑impact polycarbonate (PC/ABS) | Flame‑retardant |
| Terminal Material | Tin‑plated copper alloy | Corrosion‑resistant |
| Fuse Type | Blade (ATO / mini) – integrated | Standard |
| Relay Capacity | Up to 30A (ISO standard) | Heavy‑duty |
| Ingress Protection | IP67 (lid closed) | Dust & waterproof |
| Weight | 0.85 kg | Complete assembly |
| Warranty | 12 Months | Manufacturer Guarantee |
The 179100770391 distribution box is the result of advanced electrical engineering and precision manufacturing. The housing is moulded from a high‑impact, flame‑retardant polycarbonate blend, providing excellent mechanical strength and thermal stability. The internal terminal blocks are precision‑stamped from tin‑plated copper alloy, offering low electrical resistance and excellent corrosion protection. The box features a transparent or clearly marked lid that allows for quick visual inspection of fuses and relays, simplifying troubleshooting and maintenance. The integrated fuse and relay layout is designed to match the original vehicle schematic, ensuring that every circuit is correctly protected and easily accessible. The weather‑sealed design, with a durable gasket and secure locking mechanism, prevents moisture and dust ingress, ensuring reliable operation in the harshest environments. Each unit is tested for continuity, insulation resistance, and mechanical integrity, guaranteeing that the 179100770391 meets HOWO’s stringent quality standards. This engineering excellence ensures that your vehicle’s electrical system remains organised, protected, and reliable, mile after mile.
The 179100770391 distribution box is specifically designed for HOWO heavy‑duty trucks, including T7H, A7, and derivative models. It directly replaces the original distribution box with identical mounting brackets, connector positions, and fuse/relay layouts, ensuring a straightforward installation without modifications. The box is compatible with all factory‑specified wiring harnesses and electrical components. This distribution box is also compatible with many Sinotruk and other commercial vehicles that share the same electrical architecture. To confirm fitment, always cross‑reference the OEM number on your existing box with 179100770391. If they match, this component will integrate seamlessly. Keeping this box in your spare parts inventory enables rapid electrical system repairs, minimising downtime and ensuring your vehicle’s electrical systems remain protected and reliable.
HOWO T7H
Primary Fitment
HOWO A7
Also Compatible
Plug & Play
Direct Fit
Direct Replacement
No Modifications
Replacing a corroded, damaged, or poorly functioning distribution box with the 179100770391 immediately restores the integrity of your electrical system. The clean, secure terminals eliminate intermittent faults and voltage drops, ensuring that all electrical components receive stable, reliable power. The integrated fuses and relays provide proper circuit protection, preventing overloads that can damage sensitive electronics and wiring. The weather‑sealed housing protects the internal components from moisture and dust, reducing the risk of corrosion and electrical failures. The organised layout simplifies diagnostic work and maintenance, saving valuable time and reducing labour costs. For fleet operators, a reliable distribution box reduces electrical‑related breakdowns, improves vehicle reliability, and helps maintain the performance and safety of your fleet. By investing in the 179100770391, you ensure that your HOWO truck’s electrical system is protected, organised, and ready to perform at its best, mile after mile.
Installing the 179100770391 distribution box is a straightforward procedure. Begin by safely disconnecting the vehicle’s battery to prevent any electrical shorts. Remove the old distribution box by carefully unplugging all wiring harnesses and unbolting it from its mounting bracket. Clean the mounting area and inspect the wiring harness connectors for any damage or corrosion. Position the new box and secure it with the original bolts, torquing them to the manufacturer’s specification. Reconnect all wiring harnesses, ensuring that each connector clicks securely into place. Reconnect the battery and test all electrical systems for proper operation. Periodically inspect the box for signs of moisture, corrosion, or loose connections, and replace any blown fuses with the correct amperage. With proper installation and regular maintenance, the 179100770391 will provide years of reliable electrical distribution.
Pro Tip: When replacing the distribution box, always use the correct amperage fuses as specified in the vehicle’s manual. Using incorrect fuses can lead to circuit damage or fire hazards. The 179100770391 is designed to work with standard blade fuses; ensure you have the right spares on hand.
Genuine HOWO components are engineered to the highest standards, and the 179100770391 distribution box is no exception. Aftermarket boxes often use inferior materials, flimsy housings, or substandard terminals, leading to premature corrosion, loose connections, and electrical failures. HOWO’s distribution box is manufactured using the same materials and processes as the original equipment, guaranteeing a perfect fit and reliable performance. By choosing the 179100770391, you benefit from HOWO’s rigorous testing, including thermal cycling, vibration, and ingress protection tests. This ensures that the box 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 and long‑term peace of mind.
OEM Authentic
Factory Quality
Long Service
Extended Life
Global Standard
Trusted Worldwide
Q: Which vehicles use the 179100770391 distribution box?
A: The 179100770391 is designed for HOWO T7H, A7, and other heavy‑duty trucks, as well as many Sinotruk models with the same electrical system.
Q: What are the symptoms of a failing distribution box?
A: Intermittent electrical faults, blown fuses, non‑working circuits, corrosion on terminals, and visible damage to the housing are common indicators.
Q: Does the box come with fuses and relays?
A: The 179100770391 typically includes the housing and terminal blocks; fuses and relays are usually transferred from the old box or purchased separately. Check your specific kit for details.
Q: How do I verify the correct part?
A: Check the OEM number on your existing box. If it matches 179100770391, this is the exact replacement. Consult your vehicle’s parts manual for additional confirmation.
Order your 179100770391 Distribution Box today! Explore our complete selection of genuine HOWO and Sinotruk electrical components at Howo/Sitrak truck parts and keep your vehicle’s electrical system protected and reliable.
The 179100770391 Distribution Box from HOWO is a testament to precision engineering and uncompromising quality. By choosing this genuine component, you ensure that your truck’s electrical system remains organised, protected, and reliable, preventing costly electrical failures and downtime. Whether you are a professional mechanic or a fleet manager, this distribution box 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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