

| No. | Part No. | Name |
|---|---|---|
| 1 | WG9618713101 | Reverse Buzzer |
| 2 | ZQ1840825 | Hexagon Flange Bolt M8 |
| 3 | ZQ32008 | Hexagon Flange Nut M8 |
The Reverse Buzzer is an essential safety device that emits a loud, clear audible warning when the Sitrak C7H is shifted into reverse gear.[reference:0] It helps prevent reversing accidents by alerting pedestrians, nearby vehicles, and ground personnel to the truck’s movement.[reference:1] The buzzer operates on the vehicle’s 24V electrical system and delivers a sound pressure level between 75 and 100 dB(A), ensuring it is heard even in noisy industrial environments.[reference:2] Its robust construction is designed to withstand vibration, moisture, and temperature extremes, providing reliable service in both urban and off-road conditions.[reference:3]
The Hexagon Flange Bolt M8 is a high-strength fastener used to securely mount the reverse buzzer to the vehicle chassis.[reference:4] Its flanged design provides a wider bearing surface that distributes clamping load evenly, reducing the risk of loosening under vibration.[reference:5] The bolt is manufactured from grade 8.8 steel with a corrosion-resistant zinc plating, ensuring durability in harsh operating environments.[reference:6]
The Hexagon Flange Nut M8 is the matching fastener that completes the mounting assembly for the reverse buzzer.[reference:7] It features an integrated flange that eliminates the need for a separate washer, simplifying installation and reducing parts count. The nut is designed to provide consistent clamping force and resistance to vibration-induced loosening, ensuring that the Reverse Parking Alarm remains firmly attached throughout the vehicle’s service life.[reference:8]
Our Reverse Parking Alarm is manufactured to Sinotruk’s original equipment specifications, guaranteeing a perfect fit for the Sitrak C7H. It plugs directly into the existing wiring harness with no modifications required.
With a sound output of up to 100 dB, the Reverse Parking Alarm ensures that your reversing manoeuvres are clearly announced, reducing the risk of collisions with pedestrians and other vehicles in busy environments.[reference:9]
Built to withstand the demanding conditions of heavy truck operation, the Reverse Parking Alarm is sealed against moisture and dust, and operates reliably across a wide temperature range.
Each Reverse Parking Alarm comes complete with the Hexagon Flange Bolt M8 and Hexagon Flange Nut M8, so you have everything needed for a secure installation right out of the box.[reference:10]
The Reverse Parking Alarm is a vital safety component for the Sitrak C7H, providing an audible warning whenever the vehicle is reversed. The area directly behind a heavy truck is a complete blind spot for drivers, making reversing accidents some of the most dangerous.[reference:11]
When the driver selects reverse gear, the Reverse Parking Alarm is activated automatically, emitting a distinctive audible signal that alerts pedestrians, other drivers, and site workers to the truck’s movement.[reference:12] This early warning gives people around the vehicle time to move to a safe distance, significantly reducing the risk of injury or property damage.
The Reverse Parking Alarm is designed for 24V DC operation, which is the standard electrical system voltage for the Sitrak C7H and other heavy commercial vehicles.[reference:13] It draws a current of 0.6 amperes or less, making it an energy-efficient addition to the vehicle’s electrical system.[reference:14]
The buzzer unit is compact and lightweight, making it easy to mount in the designated location on the vehicle’s rear chassis or under the rear bumper. Its piezoelectric sound generation technology ensures consistent performance and a long operational life.[reference:15]
Installation of the Reverse Parking Alarm is straightforward and can be completed in under 30 minutes. The buzzer is secured using the supplied Hexagon Flange Bolt M8 and Hexagon Flange Nut M8, which are specifically chosen for their resistance to vibration.[reference:16] The flanged design of these fasteners provides a wider bearing surface, distributing the load evenly and reducing the risk of loosening over time.[reference:17]
The Reverse Parking Alarm is tested to withstand mechanical vibration of up to 10G, ensuring it remains functional even on rough roads and off-road terrain.[reference:18] Its operating temperature range of -40°C to +85°C guarantees reliable performance in all climates, from freezing winter conditions to scorching summer heat.[reference:19]
Many jurisdictions require heavy commercial vehicles to be equipped with an audible reversing alarm, making the Reverse Parking Alarm not just a safety feature but also a legal requirement. Our genuine OEM unit meets all relevant regulatory standards, including ECE R10 and SAE J994.[reference:20]
Over time, the reverse buzzer can become less effective due to dirt ingress, moisture damage, or general wear. Common symptoms of a failing unit include intermittent operation, reduced volume, or complete silence when reverse is engaged. Replacing a faulty unit with our genuine Reverse Parking Alarm restores full safety functionality.
For fleet operators, maintaining a working Reverse Parking Alarm on every vehicle is essential for reducing liability and protecting the company’s reputation. A failed alarm can lead to accidents that result in costly claims and damage to the fleet’s safety record.
The Reverse Parking Alarm is also compatible with other Sinotruk models, including the Howo and T5G series, making it a versatile spare part for workshops that service multiple truck brands.[reference:21] However, it is always recommended to use the genuine part for the Sitrak C7H to ensure proper fitment and performance.
The piezoelectric design of the Reverse Parking Alarm offers several advantages over traditional electromagnetic buzzers. It consumes less power, has no moving parts to wear out, and provides a more consistent sound output across the entire operating voltage range.[reference:22]
In busy urban environments, the Reverse Parking Alarm’s distinctive sound cuts through ambient noise, providing an unmistakable warning that a large vehicle is about to move backwards. This is particularly important in construction sites, loading docks, and distribution centres where pedestrians and other vehicles are constantly moving.
The Hexagon Flange Bolt M8 and Hexagon Flange Nut M8 included with the Reverse Parking Alarm are not generic fasteners – they are the exact parts specified by Sinotruk for this application. Using the correct fasteners ensures that the buzzer remains securely mounted, preventing rattling and potential damage to the unit or the vehicle’s wiring.
We recommend inspecting the Reverse Parking Alarm during routine vehicle maintenance. Check the mounting bolts for tightness, examine the wiring for chafing or corrosion, and test the buzzer’s operation by engaging reverse gear. Early detection of issues can prevent unexpected failures.
Our Reverse Parking Alarm is backed by a 12-month warranty against manufacturing defects. If you experience any issues with the product, our technical support team is available to assist with troubleshooting and, if necessary, arrange a replacement.
We ship worldwide with tracking information provided for every order. For urgent requirements, we offer expedited shipping options. Contact our sales team using the Send Email or Get Quotation buttons above to discuss your specific needs.
Choosing a genuine Reverse Parking Alarm from our catalogue ensures that your Sitrak C7H remains safe, compliant, and reliable. Don’t compromise on safety with aftermarket alternatives that may not fit or perform correctly.
The Reverse Parking Alarm is a small investment that delivers significant safety returns. It protects not only the driver and the vehicle but also the pedestrians and workers who share the road and the worksite with your truck.
Order your Reverse Parking Alarm today and ensure that your Sitrak C7H is equipped with the audible warning system it needs for safe reversing operations. Our team is ready to answer any questions you may have about installation, compatibility, or product specifications.
We maintain a large stock of Reverse Parking Alarm units to ensure fast dispatch, even for bulk orders. Whether you need a single unit for a single truck or a pallet for a fleet, we have the inventory to meet your requirements.
With the growing emphasis on workplace safety and the increasing regulatory requirements for commercial vehicles, the Reverse Parking Alarm is more important than ever. Make sure your fleet is equipped with the best – choose genuine Sitrak parts from our catalogue.
Thank you for considering our Reverse Parking Alarm for your Sitrak C7H. We are confident that our genuine OEM product will meet your expectations for quality, durability, and safety performance.
Our online catalog provides comprehensive access to genuine SINOTRUK parts for all major vehicle lines — including HOWO, Sitrak, Steyr, and Yellow River series trucks. You can browse detailed specifications, original part numbers, and exploded-view diagrams for every assembly. Whether you are performing routine maintenance or planning a major overhaul, the catalog helps you quickly identify the correct components for your vehicle. When you become a SINOTRUK customer, we offer complimentary full‑access catalog services, ensuring you always have the latest product data and interchangeability information at your fingertips to support efficient fleet management and accurate parts ordering.