Bosch O2 vs oem amg branded




I just bought the Bosch ones they say in the discription they are oe replacement for the 0035427018 that the c63 uses.
They look identical also,but with no Mercedes branding on them.




I just bought the Bosch ones they say in the discription they are oe replacement for the 0035427018 that the c63 uses.
They look identical also,but with no Mercedes branding on them.
It is not possible to figure out whether Mercedes had requirements to Bosch in this case, but I have heard of the manufacturer of a part selling both to the Manufacturer and direct and the direct product not being at the same standard as the one supplied to the manufacturer.
You guys are not trusting Mercedes, thinking that they are cashing in by branding only. A very possible situation.
It is also possible that Bosch is cashing in by selling a sub-standard that they describe as "equivalent".
Or both cases can happen at the same time, to an extent (by example, there are differences, but cable length only, due the Bosch being not so customized)
But in case of the oxygen sensors, you're better off erring on the expensive side.
Here's an example of situation:
Looking at the STAR, they have a test where you can see the lambda graphed on the same screen for all 4 sensors. So you idle it then give it gas.
Ideally, all 4 have matching lag. But if they don't, then that means that one side of the engine will be laggier than the other, an imbalance.
Maybe for cars that have 2 sides (each oxygen sensor affects one group of cylinders), Mercedes mandated to Bosch that the differences between two sensors of the same part number be below a threshold.
Bosch themselves doesn't care and sells you a sensor that is ... ok,,, for the V8 with two primary sensors, but is good for the one primary sensor cars
Last edited by Vladds; Sep 21, 2017 at 11:37 AM.
Trending Topics
I'll report back how they run in a few days but didn't Bosch invent the O2 sensor? I would think they are better than any other non branded ones
The Best of Mercedes & AMG









