Automotive Rear Seat Independent Headrest Assembly with Height Adjustment

This independent rear seat headrest assembly is custom-molded for passenger vehicles, wrapped in premium wine-red leather with vertical segmented stitching. The bottom features a black engineering plastic base integrated with a notch locking clip mechanism, paired with two metal electroplated mounting posts. Designed as a direct plug-in replacement system, it installs seamlessly onto original rear passenger seats. It balances automotive flame safety, neck support, and durable height adjustment performance for rear seat passengers.

Parameter
Features

Cushion Material	Automotive-grade high-density PUR polyurethane foam.
Foam Density	60 kg/m³; Compression permanent deformation ≤ 9% (Resists collapse over long-term use).
Flame Retardancy Standard	Complies with national standard GB 8410-2018 for automotive interior flame resistance; Low VOC, non-pungent odor.
Optional Core Upgrade	Internal filler upgradable with composite slow-rebound memory foam to enhance head and neck pressure-relief contouring.
Support Notch Rod Material	45# quenched and tempered hollow round steel; Electroplated surface for anti-corrosion protection.
Support Rod Diameter	φ10 mm to φ16 mm (Universal passenger car standard specifications).
Dual Rod Center Distance	Mainstream 140 mm / 160 mm (Precision custom molded per vehicle data).
Adjustment Mechanism	Mechanical up-and-down notched positioning; Side push-button unlock mechanism.
Height Adjustment Travel	Approx. 90 mm travel range across 8 to 10 fixed notched positions; Secure locking prevents slipping or dropping.
Base Material	High-strength modified PP engineering plastic; High impact resistance and shatter-proof durability.

Key Features & Selling Points:
- High-Density Fire-Retardant Foam: Formulated with 60 kg/m³ high-density PUR foam that meets GB 8410-2018 automotive flame retardancy standards while maintaining structural integrity over long-term use.
- Precision Mechanical Height Locking: Features a 90 mm height adjustment range across 8–10 notched stops with a side button release mechanism, preventing unwanted slipping or unexpected dropping.
- Heavy-Duty Electroplated Rods: Constructed with 45# tempered steel rods treated with anti-corrosion plating to ensure smooth vertical sliding and exceptional impact strength.
- Direct Plug-and-Play Fitment: Engineered with standard 140 mm/160 mm post spacing and φ10–φ16 mm rod diameters for fast, tool-free installation into factory rear seat sockets.