1999-2004 Odyssey REAR Passenger SPINDLE KNUCKLE 52210-S0X-A01, this part is towards front of the Right sliding door, see pictures. The part is pulled from my rear-ended 2000 Honda Odyssey (not from Junkyard), should also fits 99-04 Honda Odyssey, my van had only 118536 miles, the parts are in excellent condition!
I am the first and only owner of this minivan, I took good care of the van, faithfully done all the manufacturer recommended services, all done by the Honda dealer. No broken parts or any other repairs except the regular oil change/tuneup/tire replacement, the van looks new from inside out, and same is this part.
Genuine Honda part, not from junkyard/knockoff/fake/taiwan/oem, directly pulled from my Odyssey 2000