I have looked but I have not be able to find this part. I need the part that is circled in red. Thanks!
The part is attached
beefy_extruder_idler_v0.4.stl (222 KB)
extruder_idler_v1.4.stl (92.3 KB)
Cody does anything need to be changed for the beefy idler?
Not that i know of. I haven’t had to replace my idler as of yet
Nothing needs to be changed or modified, I replaced the one on my mini with the beefy replacement and it worked great.
You need the new latch designed to be used with the new beefy idler. I don’t think the original latch was desingned/intended to be used with the new one.
Here’s the link to the beefy idler latch (attached as well):
http://devel.lulzbot.com/mini/Gladiola/production_parts/printed_parts/beefy_idler_latch/
beefy_idler_latch_v2.2.stl (149 KB)
FWIW you can use the old latch with the new idler, albeit it’s not a perfect fit. I’ve been running this way since at least the summer without issue. You are correct though that it was intended to be used with the new latch 
Didn’t even think to try but good to know. One thing I liked about the old setup was using the idler latch tension jig to make sure I had the spring tension always set correctly. Seem to be OK with the new one. Thanks