Originally Posted by
AD-SLE
An update.
Length is 113mm and BCD is 104/64. 9 Speed Shimano, 3 chain ring MTB. Appears to be symmetrical. No real way for a definitive measure of a cartridge unless I am looking at it the wrong way.
Any advice where to order a replacement would be appreciated.
BCD, the number of speeds, or the number of chain rings are not part of the spec for a bottom bracket. You're not replacing anything else, right?
You've identified that it's a 73mm shell and length is 113mm. The 1.37 x 24 is the spec for English threaded (as opposed to French or Italian). There are a lot of options, but a Shimano BB-UN300 is probably the closest in general quality to what you're replacing. These are in millions of bicycles and are known to be reliable and easy to install.
Shimano BB-UN300 Bottom Bracket - English, 73 x 113mm Spindle, Square Taper JIS