We have superseded our stock of this sensor with the genuine Bosch "LSU4.9D" variant, which is used in OEM diesel applications. It has shown to function exactly the same as this sensor, but with better performance under higher exhaust temperatures and richer AFR's. Check it out here.
- Genuine Bosch Sensor
- Correct wideband oxygen sensor for use with Holley Terminator X and Terminator X Max
- Also used with various standalone wideband controllers
- Compare to Holley part no. 554-155