Yazaki 7158-3165-90 Blue Silicone Single Wire Seal

The Component: Genuine Yazaki 7158-3165-90 automotive silicone single wire insulation seal. RH / HS Series 0.64mm (.025) individual terminal cavity moisture protection sleeve (Blue / VMQ Silicone / Multi-Ribbed Compression Geometry / Component Alias Code: 7158316590 / Global Order Reference: 7158-3165-90).

Applications & Fitment: Designed as an essential factory original equipment (OE) environmental barrier to protect critical low-voltage electrical terminals from water ingress, engine bay fluids, salt spray, and atmospheric dust. Widespread across premium global automotive and motorcycle wiring looms—exceptionally prominent within Toyota, Lexus, Nissan, Honda, and Mitsubishi platforms—it is the definitive wire entry seal relied upon inside Yazaki RH-series multi-pin housings, including 6-way (7283-8850-30) and 8-way (7283-8855-30) female sensor blocks.

Sized precisely to slip over standard thin-wall automotive copper conductors before crimping, ensuring a pressurized, moisture-proof vacuum fitment once the 0.64mm terminal is locked into the connector shell. Highly vulnerable to mechanical tearing or loss of elasticity if technicians attempt to reuse old, heat-hardened seals during field rebuilds, crush them using generic, non-profiled hand tools, or puncture the silicone neck with sharp steel multi-meter diagnostic probes during electronic troubleshooting.

Technical Attributes:

- Manufacturer Part Number: 7158-3165-90 / 7158316590 (Brand: YAZAKI Corporation / Genuine Premium Automotive Class)

- Product Series Taxonomy: RH Series / HS Series / 0.64mm (.025 inch) Interconnect Accessories

- Component Type: Single Wire Seal (SWS) / Individual Cavity Insulation Grommet

- Target Wire Insulation Diameter Range: Precision engineered to accommodate small thin-wall automotive primary cables spanning a wire outer diameter window of 1.00mm to 1.40mm

- Wire Section Suitability: Ideally optimized for ultra-thin vehicle cabling scales, typically handling 0.13mm² to 0.35mm² conductor areas (approx. 26 AWG to 22 AWG) depending on insulation compound thickness (e.g., AVSS / CIVUS / FLU)

- Sealing Geometry: High-compression external multi-ring rib deflation profile paired with a narrow stabilizing entry collar for enhanced strain-relief at the wire exit path

- Structural Base Compound: Premium low-durometer VMQ Silicone Rubber engineering elastomer

- Color Profile: Factory Solid Blue (Color-coded for swift workshop sorting and error-free line assembly)

- Environmental Resistance Level: Certified for absolute watertight, splashproof, and dustproof vacuum integrity; engineered to withstand direct exposure to engine oil, brake fluids, and automotive solvents without swelling or degrading

- Operational Thermal Window: Premium severe-duty parameters engineered to handle extreme engine compartment and under-chassis micro-climates from -40°C up to +125°C

- Associated Mating Components (Not Included): Fits onto matching Yazaki RH-series 0.64mm female box socket terminals (such as the 7116-4415-02 crimp series) prior to terminal termination; seats perfectly into matching RH plug housings

- Commercial Access: Tiered B2B wholesale trade volume pricing breaks apply instantly inside your basket for independent tuning garages, loom remanufacturers, and trade auto-electrical stockists.