Replacing the front suspension caster control arms on an 2003 Lexus IS300 SportCross. These arms are a very common issue on first generation Lexus IS/Toyota Altezza cars. The parts themselves are fairly inexpensive, and are not particularly hard to replace. Whole job should take less than an hour, and requires removing the front wheels, transmission splash shield, front subframe-to-body brace, and the arms themselves. Tools required are a 21mm lug socket and wheel lock key, 1/2 inch drive 19mm, 17mm and 14mm sockets, a large screwdriver, Loctite 243 blue threadlocker, and a 1/2 inch drive rachet and torque wrench. Check your factory service manual for exact torque values, a 4 wheel alignment is recommended after replacing suspension components