

| No. | Part No. | Name |
|---|---|---|
| 1 | 712W51715-0123 | Trailer Socket Mounting Bracket Assembly |
| 2 | 711W51715-0535 | Trailer Connector Fixing Bracket |
| 3 | WG9718770053 | Socket |
| 4 | WG9724770001 | 15-core Trailer Plug |
| 5 | ZQ150B0825 | Hexagon Head Bolt M8 |
| 6 | ZQ340B08 | Type 1 Hexagonal Nut M8 |
| 8 | WG9724770003 | 15-core Flexible Cable |
| 9 | ZQ18114150TF6 | Hexagon Flange Bolt with Serrations M14*1.5 |
| 10 | ZQ325141T3F6 | Hexagon Flange Bolt with Serrations M14*1.5 |
| 11 | ZQ150B0820 | Hexagon Head Bolt M8 |
This bracket assembly provides a rigid mounting point for the trailer socket on the rear of the chassis. It is fabricated from heavy‑gauge steel with corrosion‑resistant coating and includes all necessary holes for a bolt‑on installation.
This bracket secures the 15‑pin trailer plug when not in use, preventing it from dangling and sustaining damage. It is designed to hold the plug firmly in a protected position.
The socket is the vehicle‑side receptacle that accepts the trailer plug. It features gold‑plated pins for low resistance and a robust weather‑sealed cover to keep out dust and moisture.
This 15‑core plug connects the trailer’s lighting and auxiliary systems to the truck. It is manufactured to ISO 12098 standards, ensuring compatibility with most European and Asian trailers.
These M8 hexagon head bolts are used to secure the mounting brackets to the chassis and the socket to its bracket. They are made from grade 8.8 steel and come with a zinc‑plated finish.
These standard Type 1 hex nuts mate with the M8 bolts to provide a secure clamping force. They are supplied with a nylon patch for added resistance to vibration loosening.
This flexible cable connects the socket to the vehicle’s electrical system. It contains 15 individually insulated conductors, each color‑coded for easy identification, and is sheathed in oil‑resistant PVC.
These heavy‑duty flange bolts are used for attaching the main bracket to the truck frame. The serrations under the head provide a locking action that prevents loosening under severe vibration.
Our 10 15-pin Trailer Plug kit is engineered specifically for the Sitrak C7H. Every bracket, bolt, and connector matches the original chassis mounting points, ensuring a perfect fit without modification.
The socket and plug are rated IP69K, making them resistant to high‑pressure water jets and dust. The included grommets and seals ensure that moisture never reaches the electrical contacts.
We supply every bolt, nut, and bracket needed for installation. You won’t need to hunt for missing parts – just unpack and mount the 10 15-pin Trailer Plug system with confidence.
The 15‑core cable uses tinned copper wires for excellent conductivity and corrosion resistance. This ensures consistent lighting and auxiliary power to the trailer, reducing breakdown risks.
The 10 15-pin Trailer Plug is a critical component for any heavy truck that tows trailers with complex electrical systems. It provides a standardized interface for all lighting, braking, and auxiliary functions.
This kit includes everything required to replace or upgrade the existing trailer connection on a Sitrak C7H. The robust bracket assembly ensures that the socket remains firmly attached even on rough terrain.
Installation begins with removing the old socket and brackets. Then, the new mounting bracket is positioned using the existing holes and secured with the supplied M14 flange bolts. The socket is then attached to the bracket.
The 15‑core cable is routed along the chassis, secured with cable ties, and connected to the vehicle’s junction box. All wires are color‑coded to match the standard trailer wiring diagram, simplifying the connection process.
The plug itself features a durable housing with a locking mechanism that prevents accidental disconnection. Its 15 pins are arranged in a configuration that supports all modern trailer functions, including ABS and auxiliary power.
One of the key advantages of this genuine kit is the quality of the fasteners. The M8 bolts and nuts are high‑tensile and include locking features to maintain clamping force over time. This reduces the need for frequent retightening.
The 10 15-pin Trailer Plug system is also designed with serviceability in mind. The socket cover can be opened easily for inspection, and the pins can be cleaned or replaced individually if needed.
For fleets operating multiple trailers, standardizing on this plug ensures that all trucks and trailers are compatible. This eliminates the need for adapters and reduces connection issues during rapid hook‑ups.
We have tested this kit under extreme conditions – from -30°C to +70°C, and in salt spray chambers. The materials used resist cracking and corrosion, ensuring a long service life even in coastal or winter road environments.
The flexible cable is rated for continuous flexing, making it suitable for drawbar trailers where the cable moves with the articulation. The insulation remains flexible in cold weather, preventing cracking.
Installation time is typically under two hours for a competent mechanic. All required tools are standard metric sockets and wrenches – no special equipment is needed. A detailed instruction manual is included.
The 10 15-pin Trailer Plug also supports advanced trailer systems such as electronically controlled braking and tire pressure monitoring. The additional pins provide the necessary data channels for these functions.
We supply both the vehicle socket and the mating plug, so you can replace both ends simultaneously. This ensures that the connection is fully renewed, eliminating intermittent faults from worn contacts.
The bracket assemblies are powder‑coated in a durable black finish that resists stone chips and UV fading. They are also designed to allow easy access for cleaning the socket area.
For safety, the socket includes a built‑in LED indicator that shows when the trailer lights are powered. This helps the driver verify the connection before moving off.
We stand behind the quality of our 10 15-pin Trailer Plug kit with a 12‑month warranty. If any component fails under normal use, we will replace it promptly.
Ordering is easy – simply use the Send Email or Get Quotation buttons above. Our team will provide a competitive quote and shipping options to your location. Upgrade your C7H today with this reliable, OEM‑grade trailer plug system.
The kit is packaged in a sturdy box with foam inserts to protect the components during transit. Each part is individually labeled for easy identification, making the installation process even smoother.
Don’t settle for aftermarket universal kits that may not fit properly. Our genuine 10 15-pin Trailer Plug ensures that every connection is secure, every wire is correctly routed, and your trailer lighting works flawlessly every time.
We also offer bulk discounts for fleet customers. Contact us to discuss your requirements and we will tailor a package that suits your operational needs.
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.