4-Pin 6.3mm High-Current Female Connector for BMW – AC Assembly Large Current Automotive Socket
Direct OEM-specification replacement for the BMW 4-way 6.3mm pitch high-current female connector used in AC assembly, power distribution, and motor drive wiring harness applications. The 6.3mm pitch series is the BMW OEM standard for high-current power circuit connections requiring robust terminal retention and high amperage capacity.
| Attribute | Specification |
|---|---|
| Vehicle Compatibility | BMW |
| Pin Count | 4-Way |
| Gender | Female (socket) |
| Pitch | 6.3mm |
| Application | AC assembly, power distribution, motor drive harness |
| Housing Material | PA66 Nylon – heat and chemical resistant |
| Terminal Plating | Tin-plated copper, high-precision |
| Wire Gauge Range | 2.5mm² – 6.0mm² (14–10 AWG) |
| Current Rating | High-current (up to 30A per pin) |
| Operating Voltage | 12V DC |
The 6.3mm pitch series is used in BMW 3 Series, 5 Series, X3, and X5 for AC compressor, blower motor, and high-current power distribution harness connections. The large terminal size accommodates heavy gauge wire for circuits requiring up to 30A per pin.
1 × 4-Way High-Current Female Connector (6.3mm pitch) with wire leads and terminal inserts pre-installed.
Q: What wire gauge does the 6.3mm BMW terminal accept?
A: 2.5mm² to 6.0mm² (14–10 AWG). Use a heavy-duty ratchet crimping tool with the correct 6.3mm die for proper crimp height and terminal retention.
Q: Is the 6.3mm pitch compatible with the 6.0mm or 5.8mm series?
A: No. The 6.3mm pitch uses different terminal sizes and housing geometry from adjacent pitch series and is not interchangeable. Always verify pitch before ordering.
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