Turbo oil line Banjo Bolt

Hi

Does anyone know if our 5th GENS have the filter mesh in the banjo Bolt for the turbo?

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Sorry , already found the answer. I'll leave the thread anyway for reference for others. The banjo Bolt to the turbo does not have the filter mesh inside. However some other banjo bolts to the engine have the mesh inside.

Thanks

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Thanks for posting up your findings!

Which lines still have those filters? Do you plan on taking those out?

Let me confirm if our cars still have the avcs banjo bolts filters. I know the gen 4 do.

Not sure if avcs banjo filter is a problem anyway.

I'll update thread.

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Does anyone know what size the oil feed line banjo bolt to our vf54 turbo is? and what size the avcs oil line banjo bolt is ?

Ive been looking at the diagrams but just very confusing to know which is which , too many lines and banjo bolt connections.

You are right diagrams are confusing. There are a number of bolts I think you are referring to. I assume the feed line is the one on top of the turbo which is connected to the turbo with 15194B. Parts link here. Some of the other ones are 15194A. Parts link here.

There are two different bolts one on each end of the oil lines that connect the heads to the top of the heads which I assume is your AVCS lines. The bolt that goes into the top of the head is 15194 (one of the two linked above). The bold that goes into the base of the head is 14445. Parts link here. that son of gun seems to have a filter in it.

None of the other 3 bolts on the oil lines running from the engine to the turbo and back seem to be anything other than 15194 meaning they shouldn't have filters.

I hope that helps. I am not the most skilled mechanic but I do have a gift of reading diagrams. Maybe it relates to all those cereal boxes with the find the tool matched to each worker quizzes I loved to do as a kid.

EDIT: To answer your question the turbo oil feed line banjo bolt is M12. I don't know the length. Yes, we still have filters on the AVCS feed line bolts and I assume they are also M12 unknown length.

You are right diagrams are confusing. There are a number of bolts I think you are referring to. I assume the feed line is the one on top of the turbo which is connected to the turbo with 15194B. Parts link here. Some of the other ones are 15194A. Parts link here.

 

 

 

There are two different bolts one on each end of the oil lines that connect the heads to the top of the heads which I assume is your AVCS lines. The bolt that goes into the top of the head is 15194 (one of the two linked above). The bold that goes into the base of the head is 14445. Parts link here. that son of gun seems to have a filter in it.

 

 

 

None of the other 3 bolts on the oil lines running from the engine to the turbo and back seem to be anything other than 15194 meaning they shouldn't have filters.

 

 

 

I hope that helps. I am not the most skilled mechanic but I do have a gift of reading diagrams. Maybe it relates to all those cereal boxes with the find the tool matched to each worker quizzes I loved to do as a kid.

 

 

 

EDIT: To answer your question the turbo oil feed line banjo bolt is M12. I don't know the length. Yes, we still have filters on the AVCS feed line bolts and I assume they are also M12 unknown length.

One thing though. I search for the oil feed banjo Bolt 15194AA110 and all sellers saying its m10 ? Not sure the pitch size and length

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BTW I guess if we have the banjo filters on other parts of the car then we should include this in maintanece check.

Even if there is no filter on the connection direct to the turbo there is still a filter to the avcs which is still technically part of the turbo oil feed line.

You don't really hear of our vf54 turbos having oil starvation issues but still we should check the filter on the avcs . If that gets clogged then it will still hurt the turbo anyway.

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I can confirm there is no filter on the feed line at the turbo, but I'm not sure about the other end.

Can't remember if its m10 or m12, but I believe I used a 14mm wrench, which is what all the other m10 bolts on the car use. I will also say the orifice in that bolt for the oil is tiny... about the size of a poppyseed. So if an oil filter were to let anything through, it may clog even without a banjo filter.

I can confirm there is no filter on the feed line at the turbo, but I'm not sure about the other end.

 

 

 

Can't remember if its m10 or m12, but I believe I used a 14mm wrench, which is what all the other m10 bolts on the car use. I will also say the orifice in that bolt for the oil is tiny... about the size of a poppyseed. So if an oil filter were to let anything through, it may clog even without a banjo filter.

The stock turbos seem to be fine. You don't really hear of people blowing their stock vf45 turbos.

My stock turbo is on about 80k miles, last 15k miles on 17lbs boost, very aggressive driving non stop boost. So oil feed doesn't seem to be an issue but I do change oil frequently. About every 4k miles.

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Great thanks for you help. Starting to make sense.

One thing though. I search for the oil feed banjo Bolt 15194AA110 and all sellers saying its m10 ? Not sure the pitch size and length

 

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I just saw in the note section of the part detail screen on parts.subaru.com is said M12. It could easily have been a typo.

I think the image link is failing. https://imgur.com/a/FcZkIJc

Working from home today and I just remembered I ordered a bunch of parts for replacing my turbo oil feed lines and coolant lines. Check it out. Looks like some the filter bolt in m10 and the 15194 bolts are m12.

 

I think the image link is failing. https://imgur.com/a/FcZkIJc

 

Working from home today and I just remembered I ordered a bunch of parts for replacing my turbo oil feed lines and coolant lines. Check it out. Looks like some the filter bolt in m10 and the 15194 bolts are m12.

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Never knew those orifices are so tiny, thanks for the pics!

Libacy, who did you get your upgraded turbo from?

Never knew those orifices are so tiny, thanks for the pics!

 

Libacy, who did you get your upgraded turbo from?

Used it for few thousand miles. Then blew engine. (not related to Turbo) Rebuilt engine. Reinstalled turbo then leaked oil everywhere. They told me turbo fault. I said impossible it was fine previously and brand new internals. So put my stock turbo back in.

Have had the 18g since. So recently took it to specialist to have a look. He said nothing wrong at all. So he rebalanced. New seals, bearings for the heck of it. And now once I gather all the info I can. I will reinstall it myself with my friend.

I have a feeling the leak was something to do with improper install. Maybe the drain pain.

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Oh, from Les!

Good luck going big turbo again, that sounds like fun!

Oh, from Les!

 

Good luck going big turbo again, that sounds like fun!

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I think the image link is failing. https://imgur.com/a/FcZkIJc

 

Working from home today and I just remembered I ordered a bunch of parts for replacing my turbo oil feed lines and coolant lines. Check it out. Looks like some the filter bolt in m10 and the 15194 bolts are m12.

check your parts that you received, the m10 Bolt part number 15194AA110 is the one with the restricter in it (restrictor basically being a smaller hole in the Bolt to slow down and reduce oil flow) which is what they use for the turbo oil feed banjo Bolt.

All the other banjo bolts seem to be m12

Please verify.

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Hi I think I found another banjo bolt.

In this figure there are two bolts. The return line is marked as 15194*A.

https://parts.subaru.com/a/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/_54102_6030514/TURBO-CHARGER-10MY-12MY/B14-040-01.html

This is the part for that. 15194AA270 and it's M12

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/SCREW-UNION/49227605/15194AA270.html

The feed line bolt in the top right is referenced as number 3 which can be either 15194*A or 15194*B with the differentiation being ( -1004) and (1004- ) respectively. This full part number is 15194AA420.

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/SCREW-UNION/49227607/15194AA420.html

(3) | 15194*A | ( -1004)
   | 15194*B | (1004- )

Based on their parts diagram legend I assume this was an update made at some point and one is superseded. The big assumption would be the new one is the B part for serial numbers 1004 and up. This would mean they added the restricter and filter the banjo bolt. Make of that what you will but I would talk to a Subaru tuner/builder shop with aftermarket turbo experience and see if the have recommendations for open banjo bolts or restricter banjo bolts for turbo oil feed lines.

Both are the same M12x1.25 which is also known as M12 fine pitch thread.

Here's the picture from the hardware store.

https://imgur.com/9sFZz9j

Massive Edit:

I just realized these are for the lines that connect to the engine. The feed line that connects to the turbo is connected with a different bolt. The return line off the turbo is a part of the pan.

Right hand side of this diagram getting bolted right down in the top middle of the turbo assembly.

https://parts.subaru.com/a/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/_54102_6021262/AIR-DUCT-DUCT-10MY-12MY/B14-073-03.html

This is the one where I can almost guarantee you will have to go custom on the line since your new turbo probably won't have the feed line coming in at the exact same spot. 15194*B is the short hand but it is not the same as the one listed above. Full part number shows the difference 15194AA110.

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/SCREW-UNION/49227604/15194AA110.html

This particular line is split into two pieces. And what is more confusing is there are each from a different diagram but their part numbers show that they are very closely related.

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/PIPE-COMPLETE-OIL/49227590/15192AA620.html

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/PIPE-COMPLETE-OIL/49227589/15192AA610.html

The first one leads off the top of your turbo and is connected with the M10x1.5. This is also known and M10 rough thread pitch. It connects to the second one with a hard line flare fitting. The second one connects to the top of passenger head on the rear. That one is connected with the M12x1.25 listed above and may or may not be a filter restricted banjo bolt based on the part number update.

I think the easiest route for you would be to just go custom braided steel line and replace both of these parts. Use the 15194AA420 banjo bolt if you want the restricer coming off the engine or the 15194AA270 banjo bolt if you don't. This is M12 if they have questions about the hose end needed. I can also get you additional measurements if needed.

On the turbo side just figure out what your new turbo needs and pick accordingly. I would not put a filter restricted banjo bolt here if you have one up top. It'll be easier to remove for inspection and to replace the one up top.

If you want to take the OEM parts route on these you'll need to make sure the turbo has the oil feed hole drilled and tapped for M10x1.5 and you may have to bend the hard line a little to get it to line up.

Hi I think I found another banjo bolt.

 

In this figure there are two bolts. The return line is marked as 15194*A.

https://parts.subaru.com/a/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/_54102_6030514/TURBO-CHARGER-10MY-12MY/B14-040-01.html

 

This is the part for that. 15194AA270 and it's M12

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/SCREW-UNION/49227605/15194AA270.html

 

The feed line bolt in the top right is referenced as number 3 which can be either 15194*A or 15194*B with the differentiation being ( -1004) and (1004- ) respectively. This full part number is 15194AA420.

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/SCREW-UNION/49227607/15194AA420.html

 

 

(3) | 15194*A | ( -1004)
   | 15194*B | (1004- )

 

 

Based on their parts diagram legend I assume this was an update made at some point and one is superseded. The big assumption would be the new one is the B part for serial numbers 1004 and up. This would mean they added the restricter and filter the banjo bolt. Make of that what you will but I would talk to a Subaru tuner/builder shop with aftermarket turbo experience and see if the have recommendations for open banjo bolts or restricter banjo bolts for turbo oil feed lines.

 

Both are the same M12x1.25 which is also known as M12 fine pitch thread.

Here's the picture from the hardware store.

https://imgur.com/9sFZz9j

 

Massive Edit:

I just realized these are for the lines that connect to the engine. The feed line that connects to the turbo is connected with a different bolt. The return line off the turbo is a part of the pan.

 

Right hand side of this diagram getting bolted right down in the top middle of the turbo assembly.

https://parts.subaru.com/a/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/_54102_6021262/AIR-DUCT-DUCT-10MY-12MY/B14-073-03.html

 

This is the one where I can almost guarantee you will have to go custom on the line since your new turbo probably won't have the feed line coming in at the exact same spot. 15194*B is the short hand but it is not the same as the one listed above. Full part number shows the difference 15194AA110.

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/SCREW-UNION/49227604/15194AA110.html

 

This particular line is split into two pieces. And what is more confusing is there are each from a different diagram but their part numbers show that they are very closely related.

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/PIPE-COMPLETE-OIL/49227590/15192AA620.html

https://parts.subaru.com/p/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/PIPE-COMPLETE-OIL/49227589/15192AA610.html

The first one leads off the top of your turbo and is connected with the M10x1.5. This is also known and M10 rough thread pitch. It connects to the second one with a hard line flare fitting. The second one connects to the top of passenger head on the rear. That one is connected with the M12x1.25 listed above and may or may not be a filter restricted banjo bolt based on the part number update.

 

I think the easiest route for you would be to just go custom braided steel line and replace both of these parts. Use the 15194AA420 banjo bolt if you want the restricer coming off the engine or the 15194AA270 banjo bolt if you don't. This is M12 if they have questions about the hose end needed. I can also get you additional measurements if needed.

 

On the turbo side just figure out what your new turbo needs and pick accordingly. I would not put a filter restricted banjo bolt here if you have one up top. It'll be easier to remove for inspection and to replace the one up top.

 

If you want to take the OEM parts route on these you'll need to make sure the turbo has the oil feed hole drilled and tapped for M10x1.5 and you may have to bend the hard line a little to get it to line up.

My turbo is m12 x 1.25.

You know the last 2 links you have of the turbo oil feed line . Where on the Diagrams does the top of the oil feed line and top of the oil return line connect to ? Couldn't figure it out.

And in the cylinder head diagram there are 2 banjos with the filter inside, they both are part number : 14445AA090 , Bolt number 3 , one on the left side and one on the right side of the cylinder heads, But also can't figure out in the diagram exactly where these are. Would love to inspect this.

For all I know these damn filter bolts could have been the cause of my previous engine failure which they said was due to oil starvation.

If the clogged banjo filters was such a major problem for the turbos in the previous Subaru's then same applies to any banjo filter around the engine. Should be inspected with every service. Even if someone did regular services you just never know what will cause it to clog.

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So each AVCS line has a banjo bolt with a filter and one without. The turbo feed line off the engine has a banjo bolt with filter. If anyone of those gets plugged it's going to cause problems eventually but debris in certain parts will cause problems too. I agree with changing those bolts out but they are pretty difficult to get to even though they appear to be right on top.

Check this diagram to see where the avcs oil feed lines are. Keep in mind this are buried in, around, and under your fuel rails, tgvs, and intake manifold.

https://parts.subaru.com/a/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/_54102_6023313/CYLINDER-HEAD-SYSTEM-10MY-12MY/B14-006-03.html

So each AVCS line has a banjo bolt with a filter and one without. The turbo feed line off the engine has a banjo bolt with filter. If anyone of those gets plugged it's going to cause problems eventually but debris in certain parts will cause problems too. I agree with changing those bolts out but they are pretty difficult to get to even though they appear to be right on top.

 

Check this diagram to see where the avcs oil feed lines are. Keep in mind this are buried in, around, and under your fuel rails, tgvs, and intake manifold.

https://parts.subaru.com/a/Subaru_2010_Legacy-25L-TURBO-6MT-4WD-GT-Limited-Sedan/_54102_6023313/CYLINDER-HEAD-SYSTEM-10MY-12MY/B14-006-03.html

this part here below that you linked which is the top half of the turbo oil feed line does not have a filter in the banjo at the top according to the parts diagram.

Part number for that banjo is 15194AA420 bolt number 3 on the diagram.

https://parts.subaru.com/p/Sub...E-OIL/49227589/15192AA610.html

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Yeah that number 3 has two part numbers. A and B one with the filter and one without.

https://partsouq.com/en/catalog/genuine/unit?c=Subaru&ssd=%24%2AKwHY7P3-kMaEiaTahYv39ICUtLOt3NPe383bxqrbrpOfq5fM1Z-byNvY3cjHzp6Rh4Pa2s6QlJ2slZHUg9DJpqvbqb7X-OuSqKzc393S39uRkYOPydbb29LAzMqfm8ipzpAAAAAAZ5EX4Q%24&vid=0&cid=252&uid=7568&q=JF1BR9KV3BG027935

Part number A for the return line (because it states it specifically) and part number b I'm assuming has to be for the feed line which also states it in the code number section, But either way none of those banjos have filters.

If it has filter like part number 14445AA90 they will call it "union screw and filter assembly"

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