The original BMW E46 Oxygen Sensor you are looking for, designed for the legendary 6-cylinder (M52 and M54) engines of the BMW 3 Series, is here with the quality of the world's number one electronic supplier, BOSCH. If your vehicle's fuel consumption has suddenly increased, if there is shaking at idle, and if the yellow check engine light is on, the source of the problem is often a faulty BMW E46 Oxygen Sensor. This critical part, which operates before the catalytic converter (in regulation position), transmits the instantaneous fuel-air mixture ratio to the engine control unit (DME). When you use cheap and universal brands, the control unit cannot read the correct voltage; however, by installing an original BOSCH manufactured BMW E46 Oxygen Sensor, you can restore your vehicle's fuel map to perfect factory settings.
- Factory Original (OEM) Quality: The original BMW E46 Oxygen Sensor is produced by BOSCH on the production line. Only this sensor perfectly meets the millivolt responses that the control unit seeks when connected.
- Reduces Fuel Consumption: A deafened sensor causes the vehicle to continuously send excess fuel. With the renewed part, the mixture returns to normal, resulting in significant fuel savings.
- Definitive Solution for Check Engine Light: Clears chronic error codes such as P0171 or P0174 (Lean/Rich Mixture) and definitively turns off your check engine light.
- Plug-and-Play Socket: No need for cutting or splicing wires. It is ready for installation with its original socket that fits the vehicle perfectly.
Technical Details
| Brand |
BOSCH (Original OEM Manufacturer) |
| Product Code |
0258003477 (0 258 003 477) |
| Part Type |
BMW E46 Oxygen Sensor (Pre-Catalytic) |
| Installation Warning |
There are 2 units in the engine. For a healthy mixture, it is recommended to replace both the right/left (Bank 1-2) sensors. |
| Compatible Engines |
M52TU and M54 (6 Cylinder Gasoline Engines) |
Frequently Asked Questions (FAQ)
How to tell if a BMW E46 Oxygen Sensor is faulty? The most obvious sign is the yellow check engine light on the dashboard. Additionally, a raw gasoline smell from the exhaust, engine shaking at idle (when stopped at lights), and fuel consumption significantly above normal are indications of a faulty BMW E46 Oxygen Sensor. When connected, the Lambda (O2) sensor gives voltage errors.
Can I just replace one of the sensors? You can mechanically install it, but in the 6-cylinder structure of the BMW E46, two BMW E46 Oxygen Sensors work side by side. If you replace only one with a new one and leave the other old, the right and left sides of the engine will feed the control unit with different data, and your shaking problem will not be fully resolved. For a long-lasting revision, it is essential to replace both sensors as a set.
