The AEM sensor harness is a replacement wiring loom for the X-Series 30-0300 and 30-0334 wideband AFR gauges, connecting directly to either a Bosch LSU 4.9 sensor or an AEM/FAE sensor, with a long loom to suit most applications.
| Type | Replacement sensor wiring harness |
| Fitment | X-Series wideband AFR gauge 30-0300 and 30-0334 |
| Sensor compatibility | Bosch LSU 4.9 or AEM/FAE |
| Part Number | 30-3427 |
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