I have a 2000 4x4 Sport with a 9.75 rear end and 3.55 gear ratio. I have developed a moaning in the diff which gets louder as my speed increases. I haven't drained the oil yet to check for metal but think that I have a bearing going bad. I looked online at some websites and not to many people seem to have bearing kits for the 9.75. Does anyone know of some websites I can go too that would carry these. Thanks. Shawn

 

http://www.accuautoparts.com/list1.jsp
http://www.ringpinion.com/Default.aspx

 

central 4wd has some. www.central4wd.com call them

 

Thanks I will check them out.

 

also, if you can get the timken bearing no, a local bearing shop should have em on hand, they are the same for many ford parts. found the bearing in my 3rd member matched my dads 67 bronco inner wheel bearing.