This genuine Yazaki 9.5 series wiring assembly features a premium 2-position female blue housing (part number 7123-4129-90) paired with high-conductivity terminals, engineered specifically for automotive signal and low-power transmission applications. As an original equipment manufacturer (OEM) grade component, it delivers reliable connection performance in harsh vehicle environments with extreme temperatures, vibration and chemical exposure. The compact blue housing design allows for easy identification and installation in complex wiring systems, making it an ideal choice for automotive aftermarket replacement and custom harness fabrication projects requiring precision and durability.
Core Technical Specifications
Connector Model: YAZAKI 7123-4129-90 (HD021YA-9.5-21 equivalent), 9.5mm series 2-pin female blue housing
Configuration: Unsealed 2-way female plug with positive locking mechanism for secure mating
Terminal System: High-quality copper alloy terminals with tin plating for excellent conductivity and corrosion resistance
Wire Compatibility: Optimized for 1.25–2.0mm² (16–20 AWG) automotive wires, ensuring proper crimp retention
Material Grade: Flame-retardant PBT housing (UL94-V0), oil-resistant insulation and anti-aging rubber components
Operating Conditions: Temperature range -40°C to +125°C, withstands 1000+ mating cycles without performance degradation
Safety Compliance: RoHS compliant, meets USCAR automotive connection standards and ISO 9001 quality certification
Key Product Advantages
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Original Yazaki Quality: Genuine 7123-4129-90 housing guarantees perfect compatibility with matching male connectors (7122 series) for seamless OEM integration
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Color-Coded Blue Housing: Easy visual identification simplifies installation and troubleshooting in dense automotive wiring harnesses
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Secure Locking Design: Positive latching mechanism prevents accidental disconnection under vehicle vibration and movement
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High-Conductivity Terminals: Tin-plated copper alloy construction minimizes contact resistance for stable signal transmission and low power loss
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Automotive-Grade Durability: Resistant to oils, fuels, moisture and temperature extremes common in engine compartments and vehicle interiors
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Cost-Effective Replacement: Direct fit for damaged OEM connectors in various vehicle makes and models, reducing repair time and costs
Application & Custom Service
Widely used for automotive lighting systems, sensor connections, actuator controls, audio equipment wiring, and general signal transmission in passenger cars, commercial vehicles and off-road machinery. Perfect for replacement of worn factory connectors or fabrication of custom wiring harnesses for vehicle modifications and repairs. All assemblies undergo strict continuity testing and dimensional inspection before shipment. We offer custom wire lengths, insulation colors, terminal types and connector configurations to meet specific project requirements, including OEM branding and packaging options.
