This sensor can be used with all wideband controllers that support LSU 4.9 sensors.
Advantages of LSU4.9 lambda sensor technology (versus LSU4.2)
- Improved accuracy and reliability– LSU 4.9 uses pumping current as a reference, while LSU 4.2 uses a reference air cell. Over time this reference air cell becomes contaminated. This shifts sensor reading to the low side. However, LSU4.9 doesn’t use a reference air cell at all, which was the Achilles heel of the LSU4.2 sensor. This results in longer sensor life and greater accuracy of the sensor throughout its life. All OEM’s that use Bosch sensors use LSU4.9 sensor and have done so for several years now. Furthermore, LSU4.9 has 25 lambda calibration reference points whereas the LSU4.2 sensors have only 10. This also adds to improved sensor accuracy.
- Improved response time – The protective tube surrounding the sensing element has been redesigned on the LSU4.9 to promote faster and more turbulent exhaust gas flow through the sensor leading to improved response.
- Cost-effectiveness – LSU4.9 technology was slow to make its way into the aftermarket industry mainly due to the sensors being considerably more expensive than the LSU4.2 sensors. However, this has changed recently and the price gap between old and new has closed to an almost negligible point.