Product review (5 stars): May be covered under LG lifetime warranty
If your front load washer has a stainless steel drum, I understand that LG backs it with a lifetime warranty. What does this have to do with the spider??? According to my local authorized lg service center, LG replaces the drum and spider as an assembly. Check with your local authorized service guy and hopefully he is into customer service as opposed to the typical "I got mine, You get yours syndrome".

I gave this a 5 star rating because I'm sure the part is up to the standards of LG. You may not need to purchase it.

If you are replacing bearings and seal on the back outer tub, you will more than likely need to replace the spider because the spindle which is part of the spider will probably be damaged due to failure of water seal and bearing.