Engine radiator OEM BMW or KOYORAD

My 95 got an aluminum tank Koyorad last month. These aluminum cylinder heads warp too easily to be messing around with cheaper options.

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?

I put mine in about 6 months ago. Been great!

Koyo forever! I've run them on both my is300s and my jz swapped s13

Koyorad makes a good radiator, a little expensive but worth it

Super happy with my koyorad. I bought the manual version and kept my trans cooler from when I bypassed the stock one.

I've had a koyorad in mine for almost 4 years now, zero issues. Granted I've got a manual so the only thing running through mine is coolant.

I had an older BMW myself (E36) and if you want reliability you'll need aftermarket (improved) radiator, radiator hoses and water pump.

plastic radiator ends tend to crack and leak on the 4.4's. make sure you get an aluminum upgrade.