Original Bosch 1 928 404 993

The Component: Genuine Bosch 1928404993 (Alternative: 1 928 404 993) 4-way female automotive sealed connector housing plug.

Compact 1.1 Series Code 1 4-position single-row socket receptacle casing (Grey / PA66 GF30 / Sealed / Inline Housing / Includes Secondary Lock).

Applications & Fitment: Designed as a primary factory original equipment (OE) heavy-duty wiring harness repair solution for critical powertrain emission networks and engine management configurations. Most notably specified across global European passenger car, commercial diesel, and heavy-duty transport platforms (including MAN, Volvo, VW, and Porsche fleet grids) as the definitive female plug interface for multi-wire automotive lambda/oxygen ($O_2$) sensors, exhaust stream telemetry, and specialized control units.

Engineered to withstand intense, sustained engine block harmonic vibration up to a certified 20G rating ceiling. Highly vulnerable to primary external thumb-latch locking clip snapping if manipulated roughly when brittle from cold weather cycles, or face-shroud tracking alignment distortion if forced blindly against misaligned male device pins during field workshop troubleshooting.

Technical Attributes:

- Manufacturer Part Number: 1928404993 / 1 928 404 993 (Brand: Bosch Connectors / Germany Genuine Class)

- Factory Manufacturing Alias Index: (Trade Code: VNP-KOMPAKT1.1-4P//2)

- Global Fleet Document Cross-References: VOLVO: 993444 / 7400993444 | MAN: 51254350196 / 81254750153 | VW: 920005903 | PORSCHE: 99965042140

- Configuration: 4-Position / 4-Way Female Receptacle Housing, Single-Row 1x4 Layout Matrix

- Product Series Taxonomy: Kompakt 1.1m Series (Oxygen Sensor Form Factor Class)

- Mechanical Keying Profile: Connector Code 2 Indexing (Factory Standard Gray Alignment)

- Connection Layout Type: Wire-to-Device / Inline Shroud Interconnect Channel

- Terminal Seating Dimension: 2.8mm Flat female blade contact tracking layout (Accepts BDK 2.8 series terminal lances)

- Pitch Center-Line Spacing: 5.00mm horizontal cavity alignment spacing grid

- Base Structural Compound: Premium Heat-Stabilized Glass-Fiber Reinforced Polyamide (PA66 GF30)

- Color Profile: Factory Solid Grey Shroud

- Secondary Locking Status: No integrated secondary lock required; relies on heavy-duty lance-locking primary structural contact engagement fingers

- Environmental Sealing Level: High-performance watertight and dustproof protection certified to severe IPX9K washdown standards; utilizes a robust pre-fitted internal silicone rubber perimeter radial face seal and individual single-wire cavity seals (SWS)

- Circuit Performance Thresholds: Rated for medium-power electrical infrastructure carrying low-voltage primary signals up to a continuous reference ceiling of 10A Maximum

- Operational Thermal Window: High-end continuous thermal resilience certified for extreme engine bay environments from -40°C to +150°C

- Target Female Terminal Contacts (Not Included): Fits standard Bosch BDK 2.8mm series female socket terminals, including 0.5-1.0mm² wire runs (such as 1928498056 Tin / 1928498054 Gold) or 1.5-2.5mm² larger primary wire paths (such as 1928498057 Tin / 1928498055 Gold)

- Associated Rubber Wire Seals (Not Included): Accommodates standard BDK 2.8 series individual single-wire seals, including Blue seals for 0.35-1.00mm² insulation (1928300599), White seals for 1.50-2.50mm² insulation (1928300600), or transparent dummy cavity blanking plugs (1928300601)

- Mating Counterpart Housing: Pairs seamlessly inline as the direct female partner to Bosch series 4-way male inline tab shroud blocks (such as 1928404635) or matching vehicle component component header arrays

- 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.