Engine radiator OEM BMW or OEM Toyota

The first radiator at the dealer was a genuine BMW part# 17111436060. Mine has lasted well.

Replaced with original.

24 years is good for me.

The stock piece lasts well over a decade in my experience. That's more than enough for me for a part that fits and functions perfectly.

Another vehicle the rad got low and the stream pretty much melted the top where it connected to the hose. New rad was on backorder and I needed a car so I cut the melted but off at a clean angle and attached a chunk of ABS pipe using high-temp JB weld which I reattached the hose too after it set. I regularly checked it over the next 1-2 weeks until the shop got a new rad in and had no issues.

OEM radiator. Replaced radiator on visit 5 (today). Bmw closed loop network is what eventually led to the radiator being checked as they’ve seen aftermarket radiators actually cool the cars too much, therefore sending the tstat fault in cold weather (this issue occurred first last winter for me, then again 5 times this winter.. all same fault code). Confidence that this is the root cause fix seems to be high so fingers crossed I won’t be updating this in a few days.

N54 335i - 200k miles radiator upgraded

That era of Toyota radiator top tank did do this. My one split across the top instead of where yours broke.

bmw makes a sad excuse of a cooling system with brittle plastic, sad plastic joins and a pathetic plastic and metal radiator, like that's gonna last

During Covid a lot of brand new genuine BMW parts had some issues so I had to change my radiator twice, was covered by BMW dealer after loads of back and forth. (There’s two part numbers for B48 engine main radiators and the dealer said the part number used was not meant for the car but the other radiator clearly wouldn’t fit)

I've replaced a radiator on a BMW 2018 3 Series with as little as 22k miles. This particular vehicle was leaking from the side tank of the rad, where the plastic is crimped to the aluminum. Nothing abnormal could be seen, just the crimp failed.