http://www.jcwhitney.com/driveshafts-and-u-joints/subaru-outback-2001/c3671d13233y2001j1s23.jcwx?filterid=d13233y2001g2

http://www.automotix.net/autorepair/diy/2001-subaru-outback-procedure_dvar.html

http://www.subaruoutback.org/forums/66-problems-maintenance/21310-driveshaft-u-joint.html

http://www.wholesaleimportparts.com/Subaru_Outback_Driveshaft_2001.php

Im sure you could get one at a salvage yard, however, you must consider the U-joint is the weak link in any drivetrain and is the first to wear out. My point being a used shaft might not last long at all before your right back where you started. I suppose you could go to the local or nearest automotive machine shop and have one made, possibly with a more available u-joint. It would depend on what kind of price they give you. I hope that helps.

You could post the question on a Subaru owners forum, this is the one I use for my Forester but there must be an Outback version. They are generally very helpful.

In the UK, there are (used to be?) companies that specialise in reconditioning such units....sadly you appear to live in the USA and may have a problem finding such a company. Have you looked?

When searching on Google I found these immediately:-

USA

http://www.hellotrade.com/universal-balancing-usa/product.html

http://www.car-stuff.com/driveshaft.htm

UK

http://www.reco-prop.com/prop.htm

http://www.firowpropshafts.co.uk/

http://www.dandfltd.co.uk/

South Africa was also well represented...

This is just a small example, search where you live also....

The salvage yards have all the interchange information you will require. I do not remember the name of the publication but it is all on line information at this time. If the salvage yard does not have this information then it is because they do not want to spend the money for the system so move on to a bigger and more professional business. You may also get this info on line when you inquire about the parts you want.

In the US, the interchange manual is called the Hollander manual.

Hello. You have Autozone Parts stores in your area : Duralast Reman/CV Axle For your 2001 Subaru Outback AWD 2.5L MFI 4cyl Price: $119.99 +Core: $35.00 Part Number: 10680 Alternate Part Number: 60-7370 AVAILABILITY: STORE PICK UP SPECIAL ORDER Visit your local store to special order. SHIP TO HOME SPECIAL ORDER Ships within 3-5 business days. ADD TO CART Eligible for FREE 2-Day Shipping learn more | sign inPart Number: 10680 Weight: 13.0 lbs Warranty: Limited Lifetime Application: With automatic transmission Notes: Rear driver side Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses. Product Service Bulletin: Instructional DVD Available Duralast Reman/CV Axle For your 2001 Subaru Outback AWD 2.5L MFI 4cyl Price: $119.99 +Core: $35.00 Part Number: 10680 Alternate Part Number: 60-7370 AVAILABILITY: STORE PICK UP SPECIAL ORDER Visit your local store to special order. SHIP TO HOME SPECIAL ORDER Ships within 3-5 business days. ADD TO CART Eligible for FREE 2-Day Shipping learn more | sign inPart Number: 10680 Weight: 13.0 lbs Warranty: Limited Lifetime Application: With automatic transmission Notes: Rear passenger side Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses. Product Service Bulletin: Instructional DVD Available Duralast Reman/CV Axle For your 2001 Subaru Outback AWD 2.5L MFI 4cyl Price: $99.99 +Core: $35.00 Part Number: 10676 AVAILABILITY: STORE PICK UP SPECIAL ORDER Visit your local store to special order. SHIP TO HOME SPECIAL ORDER Ships within 3-5 business days. ADD TO CART Eligible for FREE 2-Day Shipping learn more | sign inPart Number: 10676 Weight: 14.0 lbs Warranty: Limited Lifetime Application: With manual transmission Notes: Rear driver side Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses. Product Service Bulletin: Instructional DVD Available Duralast Reman/CV Axle For your 2001 Subaru Outback AWD 2.5L MFI 4cyl Price: $99.99 +Core: $35.00 Part Number: 10704 Alternate Part Number: 60-7374 AVAILABILITY: STORE PICK UP SPECIAL ORDER Visit your local store to special order. SHIP TO HOME SPECIAL ORDER Ships within 3-5 business days. ADD TO CART Eligible for FREE 2-Day Shipping learn more | sign inPart Number: 10704 Weight: 14.0 lbs Warranty: Limited Lifetime Application: With manual transmission Notes: Rear passenger side Shipping Information: Overnight and Two Day shipping are not available for PO Box, APO/FPO/DPO or US Territory addresses. Product Service Bulletin: Instructional DVD Available Hope this helps.

Last I knew of the Publication, it was called Hollander Interchange, and it's generally available only at scrapyards, junkyards or breakers as they are called.

Better to get a rebuilt unit, as RON says....

But if you just can't get one at all, get a Hollander Interchange lookup at the local junkyard.... They can cross-reference it to other makes that way....

Well, most of the information was helpful. I appreciate those who took the time to respond. Unfortunately, my situation has changed dramatically. On my way into work this morning I experienced a catastrophic engine failure and the car is now unfeasible to repair. It has nearly 200k miles on it and would cost too much to repair. I will have to look around for another vehicle instead. Thanks to all for your efforts and, again,for taking time to respond. I think I will certainly be making use of the link to the Forester forum since my most likely prospect at this time will be to repair the slightly older car that is in the yard right now waiting on a used engine. It has far fewer other problems than the ill-fated Outback and far fewer miles as well.

Good luck with the Forester. I've had mine for a year now having bought it with 124k miles on it. I've had to do no serious maintenance so far. My son works at a local garage & the software they use to identify common faults on vehicles has nothing listed worth mentioning.

Catastrophic you say....? What happened?

Tell us more about it. I'm sure we could suggest some ways for you to get going again until the other car is fixed or you can outlay the wonga for a replacement vehicle. (...or not)