Engine radiator OEM BMW or Denso

'07 V6 SR5 I replaced my leaking rad with a Denso four years ago and it's been absolutely rock solid. **NOTE** I'm not sure if this is still the case but some Denso rads have a couple little notches cut into the sides which are sometimes mistaken for damage as they are not neatly done (literally looks like someone just tapped it with a grinder). These notches are to allow the rad to expand a bit when the metal heats. They are necessary and part of the design even though they sure *look* like damage.

I have a denso radiator on my 03 4th gen. I changed my radiator for a denso one after it started leaking 5 years ago. It's been over 50k miles and it's going strong.

I put a Denso in my ‘04 V8 about five years ago, replacing the original that had around 200k on it. No problems so far.

Have had good experiences with Denso & Koyo.

Put a few more $ in and buy a slightly more expensive one. Preferably from a bigger brand - Denso, Koyo etc. guaranteed to be better quality in most cases and fit better.

Denso is the OE for most Honda rads. I've always used them and they're good.

Denso and Koyorad are good brands.

N54 335i - 200k miles radiator upgraded

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.

I did replace one with oem and fail in less than a month denso brand