This thread was really helpful. Called the two local Lexus dealers in the San Fran bay area and they quoted me $562 just for the hitch not including labor..
Went to the Sewell Lexus website..
http://www.lexus-parts.com/partlist.asp?Su...amp;ModelID=148
Ordered all the necessary parts:
Item ID:1868, PT228-48045 - Lexus RX330 RX350 & RX400h Series Tow Hitch - Class II - 3500 lbs, Quantity:1, Price:$265.00, Item Total:$265.00
Item ID:2610, PT228-48039 - Ball Mount, Quantity:1, Price:$45.00, Item Total:$45.00
Item ID:2998, PT791-00844 - Trailer Ball - 2 Inch, Quantity:1, Price:$20.00, Item Total:$20.00
Sub-Total:$330.00
Shipping: $43.53
Tax:$0.00
Total:$373.53
My friend who works at an auto shop is going to help install it for me..