Front lower control arm part number

I am going to replace the front passenger side lower control arm on my 99 Grand Prix. I have the part number of #10328904. When I enter this part number into GMPARTSDIRECT.com it brings up this:
GM PART # 10328904
CATEGORY: Steering Knuckle Upper & Lower Control Arm

Is the steering Knuckle the ball joint or is it the part the ball joint connects into. The site does not have a pic and I wanted to make sure I have the right part.

That is the correct part number for your car, and it is a complete lower control arm assembly that includes both bushings and the ball joint.

Thank you. The part about the steering knuckle had me thrown off course. I had to replace the same thing on the driver’s side in 2006 but I got the part from a salvage yard.

You are welcome, and sorry I forgot to welcome you to AF also. Lots of good info here, hope to see you back.