Originally Posted by HarrierAWD

Look into the small front bumper opening on passenger side. You might see a miniature radiator. That's the tranny cooler. My 2002 RX300 came with the towing package. There's no upgraded radiator. Just an A/C and radiator standard combo.

While we are at the subject of the radiator, it's wise to spend $5 to buy some chicken wire mesh screen to protect your A/C radiator below the bumper. Someone reported a $1,400 repair when it hit a rock. My custom-made mesh screen has two deep dents on it. Without it, I would be out $2,800 now.

Originally Posted by Lexmex

With regard to that radiator, another term used by my dealer for that radiator in addition to oversized was heavy-duty. I don't know what term they are using on the the RX330 and newer models with this type of set up.

I think we need to clarify towing and towing prep packages.

With that mesh don't get the holes so small. I know a few people that buy this stuff from tuning shops and it is wholly inadequate to let air through, though it is a good idea.