Mazda Axela 18-Pin 0.6/2.2mm Head Unit / Audio Wire Connector – OEM 90980-12739 / 6098-5594 / 6098-5604
Direct OEM-specification replacement for the Sumitomo 18-pin hybrid wire harness connector used on head units and audio systems on the Mazda Axela (Mazda 3). Cross-references Sumitomo / Mazda OEM part numbers 90980-12739, 6098-5594, and 6098-5604. Uses a 0.6/2.2mm hybrid contact series — combining ultra-fine signal pins (0.6mm) for audio signal and data circuits with standard signal pins (2.2mm) for power supply and ground circuits in a single white nylon 18-pin housing. This hybrid design is used on Mazda’s infotainment harnesses where high-density signal circuits and power circuits must be consolidated into a single connector.
The 18-pin head unit connector is located on the back of the head unit, connecting it to the vehicle harness. It is exposed to heat from the dashboard and vibration from the vehicle. A failed connector causes the head unit to lose audio output, navigation data, Bluetooth connectivity, or reverse camera signal — depending on which pins have failed. The 0.6mm terminal is extremely fine and is easily damaged during head unit removal for aftermarket audio installation or navigation system upgrade.
| OEM Number | Application |
|---|---|
| 90980-12739 | Mazda 18-pin head unit connector (primary) |
| 6098-5594 | Sumitomo 18-pin connector (female housing) |
| 6098-5604 | Sumitomo 18-pin connector (male housing) |
| Attribute | Detail |
|---|---|
| Pin Count | 18-Pin |
| Contact Series | 0.6/2.2mm hybrid pitch (Sumitomo series) |
| Housing Material | Nylon, white |
| OEM Part Numbers | 90980-12739 / 6098-5594 / 6098-5604 |
| Applications | Head unit, audio system, navigation, infotainment harness |
| Compatible Models | Mazda Axela (BK / BL / BM / BN, 2003–2019); Mazda 3 (international equivalent) |
| Terminal Included | Yes |
Q: My Mazda Axela head unit lost audio after a dashboard removal — could it be the connector?
A: Yes. The 18-pin head unit connector is the most common failure point during head unit removal on Mazda Axela. The 0.6mm terminal is easily bent when the connector is pulled without pressing the release tab. Inspect the connector before replacing the head unit.
Q: Are terminals included?
A: Yes, terminals are included with all variants.
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