Blind cavity plug for the Bosch Matrix 1.2 connector system (Bosch P/N 1928300935). It fills a cavity that carries no wire, restoring the seal across the back of the connector.
On a sealed connector, an empty cavity is an open path into the loom — water tracks through the unfilled hole, along the inside of the housing, and onto the adjacent contacts. Any ECU or sensor connector where the harness uses fewer circuits than the housing provides needs a plug in every spare position.
Technical Specification
| Property | Value |
|---|---|
| Component | Blind cavity plug |
| Colour | White |
| Fits | Bosch Matrix 1.2 connector housings |
| Function | Seals unused (unwired) cavities |
| Sold as | Per plug |
| Manufacturer | Bosch |
| Bosch P/N | 1928300935 |
Assembly Notes
- Push the plug in from the wire side until it seats flush, the same as a crimped contact.
- Count the spare cavities when you build the loom and plug all of them — this is the step most often skipped on a harness that later fails a water test.
Related Products
- Bosch Wire Seal Blue 0.35–1 mm² — wire seal for populated cavities, 0.35–1 mm²
- Bosch Kompakt 3 Pole Connector, Coding 1 — 3-pole sealed housing
- AMP Superseal Sealing Plug — equivalent blind plug for Superseal 1.0 housings
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