Hello! I am trying to replace the upper front driver's side control arm. Some vendors use the part numbers K90447 for the driver's side, K90446 for the passenger side, while others say their part fits both sides. Are they all the same? Thanks! Joe

 

Welcome to HAF...
We don't use the "DIY" section for questions. I'm going to move this to the Suspension section where more people will see and help.

 

Thanks Jim!

 

... and I just looked. Honda's part numbers are different for left & right, but I don't really know what exactly is different about them.
(I looked at 4-door because you didn't say which car)

 

Mine's the EX wagon.

 

Upper control arms always have different part numbers on Honda's. They have a slight slant to bolt on correctly

 

Thanks Sean - yeah, I finally did enough digging around to find out they are different.