Engine radiator OEM BMW or Nissens

I have a 2008 e90 335xi FBO with 197k miles and I am still on my original BMW radiator. If the stock original BMW stamped one works well... why experiment?

me and some E39 buds here in the Netherlands have great experience with nissens. It's a pretty good package all around and had a copper core instead of alu.

I had an early failure of a Nissens and have switched to a cheap all aluminum unit, which is working well for me.

I use nissens brand rad (Danish manufacturer) and so far so good.

I recently replaced the radiator on my MK1 TT. After getting the old, leaky radiator out of the car, I compared it with the new one and was surprised at just how different the core designs were!

I ordered the Nissen Radiator from Rock Auto for around $70 including shipping and ill go from there im planning on fixing it this weekend so ill keep updating

Bought a nissens radiator and also an ebay fan shroud with dual 12 inch fans. The oem fan draws a lot of current snd it burned out the plug so I decided to change out. The shroud fits right over the core.

I imagine, if done right it could be stronger than original. But unless it's a really good radiator, I'd replace it with one of those $70 nissens.

BMW N51 engine, SULEV radiator, these cars came with a sensor that sticks to the side of the radiator for emissions compliance. Can't even get it aftermarket anymore (last time I checked) new radiator without the sensor is like $150, with the sensor is close to $800, and no you cannot use the old sensor, if you try sticking the old sensor to a new radiator it won't recognize it and it will trigger the check engine light.

After the copper OEM radiator broke I replaced it with a nissens aluminum radiator now the thermostat never hits operating temperature, I changed the thermostat to what the book wanted which was a 190 degree thermostat but even still the gauge doesn't go up all the way. I replaced one of the senors and the main coolant temperature sensor but still it doesn't go all the way up. On top of that it takes the gauge a good 3 minutes just to move slightly. Doesn't need to be fix probably but still annoys me