on the theme of blinker fluid, ignition smoke, etc joke parts... here's a new one

left (passenger) side wheel weights, and drivers side wheel weights.

See, I'm not making this shit up... there's a simple misunderstanding in the above image.

LH weights refers to the company that used the casting mark of a diamond, with the letters LH inside it

https://ontime.mecum.com/auction/steven-juliano-collection-day-1-8/bidgallery/page_MTk