Guangzhou Guanna Auto Parts Trading Co., Ltd.
                                                                                                           
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10 Years
Since 2016
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Rear Seat Belt Right Side Three-Point Seat Belt Assembly for BYD Song Plus Vehicle

Price Negotiable
Price: US$20.00-50.00
MOQ: 5
Delivery Time: 7-16 days
Brand: seat belt
Product Description
Rear Seat Belt Right Side Three-Point Seat Belt Assembly for BYD Song Plus Vehicle
This specialized safety component is designed for the right-side rear passenger seat of the BYD Song Plus vehicle. The system employs an internationally standard three-point structure to provide comprehensive safety protection for rear-seat passengers, incorporating advanced technologies including Emergency Locking Retractor (ELR) and pretensioner force-limiting mechanisms.
Technical Specifications
Parameter Specification Remarks
Seat Belt Type Three-Point, Emergency Locking Retractor (ELR) + Pretensioner & Force Limiter Complies with safety standards
Pretensioning Force 1.5 - 2.5 kN Effectively restrains the occupant
Force Limiting Value 3 - 5.5 kN Dynamic energy absorption
Locking Time ≤ 50 ms Rapid response
Webbing Stiffness 7% Premium configuration
Dynamic Impact Test 50 km/h collision speed Dummy chest acceleration ≤ 60g
Durability Test ≥ 50,000 cycles Force attenuation ≤ 10%
Operating Temperature Range -40°C to 80°C Suitable for all climates
Service Life 25 years 100,000 use cycles durability
Core Safety Features
Emergency Locking Function
The assembly features dual activation devices—a webbing sensor and a vehicle sensor. If the seat belt experiences a sharp tug or the vehicle undergoes severe tilt, the system immediately activates the locking mechanism to prevent further webbing extraction.
Pretensioner and Force Limiter Technology
Utilizing a dual-initiator pyrotechnic pretensioner, the system tightens the seat belt within 0.08 seconds upon collision detection, ensuring occupant stabilization before potential secondary impact. When webbing force exceeds 1500 N, the force limiter engages, capping occupant load to within 3000 N over a 3-second period to reduce spinal load.
Advanced Webbing System
The belt consists of a 9-layer composite structure with a high-strength polyester mesh outer layer, aramid fiber weaving middle layer, and flame-retardant coated polyester base fabric inner layer. This three-dimensional weaving technique maintains 30% elastic deformation even under 12,000 N impact force.
Intelligent Monitoring System
The system communicates with the vehicle's ECU to monitor real-time status. If the ABS system detects emergency braking, the seat belt initiates pretensioning within 20 ms. A temperature compensation circuit automatically adjusts pretensioner parameters to ensure stable performance across varying environmental temperatures.
Installation and Usage
This three-point seat belt assembly uses standard mounting interfaces, connecting to the vehicle's C-pillar anchor point with a recommended installation torque of 50 N*m. To use, pull the belt from the retractor behind the shoulder, ensuring the shoulder strap crosses the chest and the lap belt rests snugly across the hips, then insert the tongue into the corresponding buckle. The system supports height adjustment for the shoulder anchor point to accommodate passengers of different heights for optimal protection.
Product Images
Complete three-point seat belt assembly unit showing full mechanism and components
Three-point seat belt assembly
Close-up view showing seat belt mechanism details and webbing construction
Close-up of mechanism and webbing
Packaged seat belt assembly ready for shipping in protective packaging
Packaged assembly ready for shipping
This seat belt assembly is a vital safety feature, underscoring BYD's commitment to passenger protection. For installation, repair, or replacement, we recommend consulting an authorized BYD service center to ensure perfect compatibility and correct functionality.
About Our Company
Established in August 2016, Guangzhou Guanna Auto Parts Trading Co., Ltd. specializes in automotive passive protection devices. We are committed to ensuring driver safety and improving customer experience, having grown into a comprehensive enterprise that integrates research and development, production, and sales.

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Guangzhou Guanna Auto Parts Trading Co., Ltd.
Location No. 999, Middle Road, Caozhuang, Shateng Village, Guangcong Road Section, Taihe Town,Guangzhou,China
Contact Person Petter Wang

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