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3rd Gen Ram Tech2002-2008 Rams: This section is for TECHNICAL discussions only, that involve the 2002 through 2008 Rams Rams. For any non-tech discussions, please direct your attention to the "General discussion/NON-tech" sub sections.
You guys are allF^*&in nuts. Thats obviously a 3 3/4" pinckney flange!!!! LOL. We must all think alike cause my first thought before scrolling down was to call it a Flux Capacitor then I saw Hemiyellow's post so I thought HA i'll get 'em and say a Canooter valve. No luck. Just kiddin man. I agree. Looks like a greasable press in type ball joint to me.
my first guess was that it is the left-side linkage for the bumper fluid reservoir, LOL
good luck kid.....
go with the press-in, greaseable, ball joint
kinda looks like a hub for a rear wheel drive car (like a 300, magnum and that sorta thing)...if i counted right it's a 31 spline....i'd say it's a hub