Thanks to those of you assisting me in diagnosing a rear end noise in my 1999 Outback Wagon. Just as a few of you guessed, it's the rear differential. I found a few used ones on craigslist; one out of a 2001 Outback and a few out of WRX's (my ratio is 4.44/1).

 

Can anyone tell me what other models will interchange with a 1999 Outback Wagon with an automatic trans? Many thanks!

 

Phillip

96-99 legacy outback 2.5 automatic for sure are all 4.44

 

96-99 Legacy GT 2.5 auto are usually 4.44 also.

so is the 97 LSi 2.5L, but there won't be very many of them.

 

in 2001, i think, they did away with the 2.2L engine in the legacy series, maybe in the impreza as well, i don't know, i'm not an impreza guy. prior to that all the 2.5L engines with auto trans had the 4.44 rear end. it wouldn't surprise me to learn that all auto trans since 2001 also have the 4.44 rear end.

 

have you looked at www.car-part.com yet? sort your search by distance.

 

good luck

so is the 97 LSi 2.5L, but there won't be very many of them.

if that's the case, i have one of these i can sell you.

 

are you sure about that? i just checked and it looks like the 1997 LSi auto AWD should be a 4.11 final drive. i think his will be 4.44 (his probably came with 16" wheels, where the 97 LSi i think comes with 15").

if that's the case, i have one of these i can sell you.

 

are you sure about that? i just checked and it looks like the 1997 LSi auto AWD should be a 4.11 final drive. i think his will be 4.44 (his probably came with 16" wheels, where the 97 LSi i think comes with 15").

the trans number will tell you. (96 - 99)

TZ102Z2xxx is an auto trans on a 2.5L engine and has the 4.44 final drive. (outbacks, GTs and LSi.)

TZ102Zxxxx is an auto trans on a 2.2L engine and has the 4.11 final drive. (legacy L, LS, and brighton.)

 

if the 2.5L 99 auto trans has a different part number then it's phase II and all bets are off. (but it could be 4.44, i just don't know. )

 

2000 - 01 the auto trans for the legacy 2.2L and the impreza 2.2L had the same part number. my guess is that they are 4.11. just a guess.

 

the 97 GT has 16 inch wheels but smaller tires 205/55/16 than the outback 205/70/15. the circumfrence of the GT tire (78.2 inches) is about the same as the legacy 195/70/14 (77.7 inches). it would need taller struts to have bigger tires. the circumference of the outback 205/70/15 is larger (82.6 inches). and of course diameter is relative to the circumference.

Wow, thanks for sharing so much information. Sounds like I need a diff from a '96 -'99 Outback, GT, or LSi with a 4.44/1 ratio. If I can't fine one on Craigslist, I'll check my local salvage yards. Hopefully I'll find one before mine fails.

Phillip

the trans number will tell you. (96 - 99)

TZ102Z2xxx is an auto trans on a 2.5L engine and has the 4.44 final drive. (outbacks, GTs and LSi.)

TZ102Zxxxx is an auto trans on a 2.2L engine and has the 4.11 final drive. (legacy L, LS, and brighton.)

 

if the 2.5L 99 auto trans has a different part number then it's phase II and all bets are off. (but it could be 4.44, i just don't know. )

 

2000 - 01 the auto trans for the legacy 2.2L and the impreza 2.2L had the same part number. my guess is that they are 4.11. just a guess.

 

the 97 GT has 16 inch wheels but smaller tires 205/55/16 than the outback 205/70/15. the circumfrence of the GT tire (78.2 inches) is about the same as the legacy 195/70/14 (77.7 inches). it would need taller struts to have bigger tires. the circumference of the outback 205/70/15 is larger (82.6 inches). and of course diameter is relative to the circumference.

Wow, thanks for sharing so much information. Sounds like I need a diff from a '96 -'99 Outback, GT, or LSi with a 4.44/1 ratio. If I can't fine one on Craigslist, I'll check my local salvage yards. Hopefully I'll find one before mine fails.

Phillip

 

don't forget to check www.car-part.com. sort your search by distance.