4-Pin 3.5mm Waterproof O2 & AC Assembly Connector – TE 1-1703818-1 / 1-1418390-1
Direct OEM-specification replacement for the TE Connectivity 4-way 3.5mm pitch waterproof connector pair, cross-referencing part numbers 1-1703818-1 (male) and 1-1418390-1 (female). Used for oxygen (O2/lambda) sensor, AC assembly, and automotive wire cable adapter harness applications.
| Attribute | Specification |
|---|---|
| OEM Part Numbers | 1-1703818-1 (male) / 1-1418390-1 (female) |
| Manufacturer | TE Connectivity |
| Pin Count | 4-Way |
| Pitch | 3.5mm |
| Seal Type | Waterproof – sealed housing with wire seals |
| Housing Material | PA66 Nylon – heat and chemical resistant |
| Terminal Plating | Tin-plated copper, high-precision |
| Operating Voltage | 12V DC |
| Primary Application | O2/lambda sensor, AC assembly, wire cable adapter |
1 Set: 1 × 4-Way Male (1-1703818-1) + 1 × 4-Way Female (1-1418390-1) with wire leads and terminal inserts pre-installed.
Q: Is the 1-1703818-1 compatible with wideband O2 sensors?
A: Verify the pin count and terminal size against your wideband O2 sensor’s harness specification. Wideband sensors (e.g., Bosch LSU 4.9) typically use a 5-pin connector — confirm your sensor’s interface before ordering.
Q: What wire gauge does the TE 3.5mm terminal accept?
A: The 3.5mm series terminal accepts 0.5mm² to 1.5mm² (20–16 AWG). Use a ratchet crimping tool with the correct 3.5mm die for proper crimp height.
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4 Pin Connectors
