Sumitomo 7165-0797 TS 025 Series 0.64mm Light Gray Dummy Plug

The Component: Genuine Sumitomo high-performance environmental cavity blanking plug. TS 025 Sealed Series taxonomy / 0.64mm Wire Harness Dummy Terminal / Unused Cavity Blind Blocking Pin / Waterproof Interface Seal (Light Gray / Premium Nitrile Butadiene Rubber / Male-Female Common Fitment Profile / Component Variant Alias: 7165-0797 / Global Order Reference: 71650797 / Alternative OEM Cross Reference: 09871PLGQD-GR).

Applications & Fitment: Engineered as a premium, original equipment (OE) specification environmental sealing component designed explicitly to block and protect unused conductor paths within ultra-compact automotive connector blocks. This TS 025 series dummy plug is an absolute wiring loom staple across major Japanese passenger vehicles, motorcycle electrical systems, and motorsport harness platforms—prominently integrated within Toyota, Lexus, Subaru, Honda, and Mazda factory wiring architectures. It is standardly deployed inside high-density multi-way engine control units (ECU), transmission controllers, complex body control modules (BCM), and ISO OBDII diagnostics links where specific pin positions remain unpopulated from the factory. Rather than relying on rigid plastic pins, this specialized Nitrile Butadiene Rubber (NBR) plug inserts directly into vacant 0.64mm (.025 inch) terminal positions from the rear of the wire dress block. Its tiered, concentric rib profile collapses slightly under compression to establish a secure friction-lock within the cavity wall, providing an absolute, fluid-tight barrier that prevents atmospheric moisture tracking or high-pressure water spray from penetrating adjacent active signal circuits. Highly vulnerable to perishing, mechanical tearing, or accidental loss during field terminal depinning operations, making it essential for maintaining IP67/IPX9K waterproof compliance whenever a harness modification or wire deletion is executed. Common mating housing applications include sealing vacant pathways in connectors interfacing with Toyota factory housing part number 90980-09871 or matching Subaru chassis frames.

Technical Attributes:

- Manufacturer Part Number: 7165-0797 / 71650797 (Brand: Sumitomo Wiring Systems / Japan Genuine Class)

- Product Series Taxonomy: TS 025 Sealed Series / Yazaki 0.64mm Sealed Interconnect Family

- Component Structural Type: Cavity Dummy Sealing Plug / Blind Waterproof Pin

- Target Cavity Dimension Matrix: Form-fitted for standard 0.64mm nominal blade width (.025 inch classification) terminal paths

- Gender Application: Common-fit design (suitable for both Male and Female connector housing variants)

- Structural Material Composition: Premium-Grade Nitrile Butadiene Rubber (NBR Class) for exceptional elastic recovery and high resistance to engine lubricants, fuel vapors, and chemical cleaning solvents

- Color Profile: Factory Standard Light Gray (Grey Neutral Designation for rapid visual orientation and line-inspection validation)

- Environmental Sealing Threshold: Achieves full IP67 and IPX9K moisture/dust ingress protection when correctly seated inside matching connector housings

- System Compatibility Cross-References: Directly matches Yazaki structural equivalent reference 7158-3043-40 and Subaru service part references 99801FN140, 99801FN160, and 99801FN270

- Operational Thermal Window: Severe-duty under-hood and chassis envelope certified to maintain structural tension and seal elasticity from -40°C up to +125°C

- Commercial Access: Available as loose individual workshop repair pieces, packaged sub-assembly repair quantities, or factory-bulk master supply units. Tiered B2B wholesale trade volume pricing breaks apply instantly inside your basket for independent garages, loom remanufacturers, and trade auto-electrical stockists.