Sumitomo 6918-1608 3-Way Blue TPA Lock (HX090 Series)

The Component: Genuine Sumitomo OEM 3-position front secondary terminal position assurance lock insert / Premium Sumitomo HX090 series automotive connector retainer / 3-way single-row inline configuration lock / High-visibility front-loading secondary terminal lock (TPA) / Molded from premium, impact-resistant, chemical-resistant PBT (Polybutylene Terephthalate) / Component Part Number: 6918-1608 / Alternate Engineering Identifier: 69181608.

Applications & Fitment: High-precision terminal stabilization component designed as the direct OEM service replacement part for Sumitomo HX090 Sealed Series 3-way female connector housings—specifically the highly popular 6189-0728 ignition coil plug used on Honda K-Series (K20, K24) and F-Series (F20C, F22C) engines. This authentic bright blue front insert acts as a critical mechanical failsafe; it cannot be locked into position unless the individual 2.3mm (090) female crimp terminals are fully and perfectly seated inside the housing, eliminating field failures caused by backed-out pins under intense engine vibration and thermal cycling. Engineered to withstand harsh engine compartment environments, continuous heat up to 120 degrees Celsius, and chemical exposure. A crucial service and stock component for automotive wiring harness builders, Honda motorsport specialists, and trade auto-electrical distributors.

Technical Attributes:

- Manufacturer Part Number: 6918-1608 / 69181608 (Brand: Sumitomo Wiring Systems)

- Product Component Classification: HX090 Sealed Series Front Secondary Lock / TPA Insert

- Total Position Count: 3-Way / 3-Cavity Inline Lock Profile

- Housing Family Series Match: Sumitomo HX090 (2.3mm) Sealed Series (Fits 6189-0728)

- Functional Configuration: Front-Loading Snap-In Terminal Position Assurance

- Terminal Cavity Pitch Compatibility: Matches standard HX090 single-row female connector layout

- Structural Material Base: Premium Unreinforced PBT (Polybutylene Terephthalate)

- Color Profile: Factory High-Visibility Bright Blue (BL)

- Thermal Application Rating: -40 to 120 degrees Celsius

- Commercial Procurement Status: Supplied as an individual standalone secondary lock insert component. Outer female connector bodies, internal crimp contacts, and weather-seals must be sourced independently. Trade bulk packaging quantity discounts apply automatically in the cart.