** This listing is for Bosch LSU 4.9 sensor only **

Bosch LSU 4.9 Wideband Oxygen Sensor

These Bosch Sensors are supplied by 14point7 who calibrate the sensor and brand the casing with their logo.

We may also supply a custom sensor by DIY EFI which is made to Bosch specification with the CORRECT value calibration resistor fitted.
( Whilst technically not a Bosch part it is correct in operation unlike the cheaper clones which do not have the correct resistors fitted )

Which sensor you are supplied will vary depending on stock levels and cannot be specified at time of order.

Used with our own CFI Classic Fuel injection system but can also be used with many other systems

It is with the help of this clever piece of kit that our Classic Fuel Injection system self learns when the vehicle is driven, so whilst not essential to our CFI kits it is highly recommended.


This listing is for Bosch sensor only, either buy the separate 14point7 Amplifier or buy the combined amp and sensor set in our other listing

Bosch LSU 4.9 Wideband O2 Lambda Sensor

  • Brand: Bosch
  • Product Code: lsu4.9
  • Availability: 8
  • £80.00

  • Ex Tax: £80.00

Tags: Bosch LSU 4.9 Wideband O2 Sensor


The vehicle kits will normally be supplied with the ECU pre loaded with an initial start file.

This initial start file is simply provided as an aid for engine starting, it should not be considered a suitable final calibration for your engine.
You must be prepared to undertake further ECU calibration work to ensure the ECU files are tailored to your vehicle.
Failure to successfully complete the calibration process may lead to poor vehicle driveability or even damage to your engine.

Our Classic Fuel Injection Kits are custom built to order and to the customer general specification and as such are exempt from automatic return rights under Consumer Contract regulations.
By ordering this conversion kit you understand that further ECU calibration work will be required and the final results are outside of our control.
We cannot accept returns or claims arising from failure to successfully complete the calibration process.