Water pump replacements?
 

What do you folks use as a replacement water pump for the SVX?

There are two Subaru part codes that seem relevant:
21111AA033 - this pump is with two outlets
21111AA070 - this pump is with three outlets, with one line going to the oil cooler. There's only one picture of this pump in the internet, and the code is not recognized by Subaru but should be a valid FHI code.

So far the two pumps that we've tried are Aisin WPF002 and WPF006.
WPF002 does not fit, and has only one outlet, despite marketed as a replacement pump.
WPF006 roller would leave about half an inch of the timing belt unsupported, looks like it's too short to be used. :angst:

I'm aware of GMB160-2050, which seems to be a bit better on how far up the roller reaches. I haven't seen if they have a three outlet version available for the pump.

Any tips and ideas what pump would fit from which vendor? We can probably make do with two outlets. Wouldn't want to reuse the old pump, unless I absolutely have to.

Re: Water pump replacements?
 

Hello,

Is 21111AA033 no longer available now?

According to part list, compatible parts of X211AA000 (water pump kit) are

21111AA033 water pump complete
21114AA051 gasket water pump
21116AA020 sealing water pump
21234AA010 gasket thermostat

Also yahoo says

https://store.shopping.yahoo.co.jp/i...0bjnmlnsc.html

21111AA033 21111-AA060 21111-AA061 21111-AA062

Genuine 21111-AA062 seems still available.　JPY17,900
https://www.monotaro.com/g/04520363/


Also, GWSU-12A of GMB JPY6,390 seems okey.

https://www.monotaro.com/p/0992/5772/?t.q=21111AA033

Pls check it.

Re: Water pump replacements?
 

Thank you Noriyasu for taking your time to reply.

Apologies for not posting pictures earlier, this should make it a bit easier to see the issue. The SVX in question is MY1992 - as far as I know.

Here's the pump from the vehicle, with three outlets, one of them towards the oil cooler.
https://i.postimg.cc/B6FJg6z1/20240315-145218.jpg

I've added a couple of markers to this photo to show a couple of features of the original pump.
https://i.postimg.cc/59P7xVNZ/20240325-153835-res.jpg

Here's WPF006 from Aisin (it has three outlets too), with added markers. The roller in the Aisin pump is not high enough for the timing belt to fully latch on.
https://i.postimg.cc/c4PNLYLy/20240325-153856-res.jpg

I'd need to see photos of the water pumps from this angle to check if they actually fit. I don't know if there's something odd in my SVX, or if the oil cooler has been retrofitted into it at some point.

Yahoo Japan does not ship goods to European Economic Area, so the link does not open for me.

GWSU-12B has one water outlet, we'd prefer a pump with at least two outlets. We can circumvent the need for the third outlet as long as the pump fits.

I'd need to get Monotaro's page translated somehow to order something from them. A genuine 21111AA033 does not seem to be available here, but I'll go check from the local Subaru dealer.

Re: Water pump replacements?
 

Oh, Finland...

Can you see this ?

https://store-shopping-yahoo-co-jp.t..._x_tr_pto=wapp

I wrote this just to see compatibility. In the photo, there are only two outlet.

I found the photo when I replace the water pump and attach these. mine is '92. Pls refer. outlet seems two except thermostat in this photo too.

Also, important distance is from is from the engine block to the top(or bottom) of the pulley. Also, from block to base of idler. Pls try to measure it.
It may just be the mounting height of the thermostat cover that is different. It doesn't seem to interfere with the timing belt cover.

For the monotaro, it will ship only Japan domestic. I sometimes refer to this shopping site to check if the part has been discontinued or not. Discontinued parts usually appear as such. For reference, it's a little more expensive than buying from a dealer because of the shipping charges.

21111-AA061 seems discontinued.
21111-AA062 seems still available. I'm not sure it shape quite same as AA033

You may able to get from ebay.

https://www.ebay.com/itm/225212446610

Re: Water pump replacements?
 

Hi

WPF-008,21111-AA060/061 and GWSU-16A seems does not fit to SVX. See review of amazon.

https://www.amazon.com/Aisin-WPF-008.../dp/B008EEYXZW

umm.

Re: Water pump replacements?
 

Thank you for these checks!

I can see the translated page, but the pictures are not loading.

Yes, I'm actually Finnish. Here, Mika is a male name, which has caused a couple of confusions on my travels to Taiwan. Can't imagine what it would be in Japan.

We measured the distance from the engine block to the pulley top, WPF006 is about 10 mm shorter. It does look like the pulley height in 21111-061/62 is not high enough as stated in the review.

There is an Ebay option of the GMB water pump which seems to be of correct height. In the manufacturer's pictures, it does seem to have similar height.

Re: Water pump replacements?
 

Hi, Mika is female name in Japan. Although Japanese names are written in kanji(Chinese character), Mika means fragrant beautifully or beautiful summer. There are many Japanese people going to Taiwan, so that may have caused confusion.

So, I sent the question message about compatibility to Yahoo shop with URL of amazon review. In many cases, web shop photos are unreliable. The photos may have been selected by non-experts who do not understand the product well.

On the other hand, the Legacy 2.2L model is listed in the product compatibility information on eBay. EG33 has a history of adding two cylinders based on EJ22. Similar parts may have been used on that. What about confirming your eBay shop about compatibility? eBay has a 30-day money back guarantee, so if it doesn't work, you can return it.

My SVX's engine was overhauled 4 and a half years ago, so I don't think I'll ever replace the water pump again in the future, but since many parts are discontinued, I think your information would be helpful to everyone.

Re: Water pump replacements?
 

Regarding the availability of the genuine 21111AA033 water pump, Subaru Finland says the part is no longer available. Amayama does not list it either.

I have ordered GMB 160-2050 from Ebay, the general prescription is available from the vendor's site here. Fingers crossed that this will fit. I'll let you know how this goes.

We're overhauling this EG33 as the head gasket was leaking and pushed the coolant to the expansion tank. The former gaskets were not MLS, and allowed coolant to enter cylinders 5 and 4. Luckily no significant damage to the cylinder walls.

It's a thing of its own to repair a 30 year old car with limited production numbers!

Re: Water pump replacements?
 

The total production volume was 24,379. Of these, only 5,951 units are registered in Japan.

The authenticity is uncertain, but it seems that the number of registered cars in Japan a few years ago was 865.

Due to the discontinuation of many parts, the number seems to be rapidly decreasing as they are unable to pass vehicle inspection.

The SVX has a defect where when the electromagnetic clutch of the air conditioner compressor is damaged, the fuse of radiator fan will blow and the radiator fan will not work. In my case, this caused overheating and damage to the head gasket. At that time, the genuine head gasket was already discontinued, so I used Cometic-066-MLS. FYI

Re: Water pump replacements?
 

Hello all.
I am also in need of a water pump.
Please send leads for finding the right SVX part.

Hey Mika, how did the search work out?
Any luck with the ebay listing?

I'm open to any suggestions.
BobSVX96.

Re: Water pump replacements?
 

...and on the technical side...
I know that I should IDEALLY put in a new water pump when I service the timing belt...but what's the downside of keeping the current water pump (which has been working fine)?
Tks, BobSVX96.

Re: Water pump replacements?
 

The water pump will eventually fail and seize up. If the engine is ran after that it will over heat and likely require expensive repairs. There is also risk of water pump derbies getting stuck in hard to clean places.

Usually you will hear noise coming from the pump before complete failure, but I would not count on that as a warning sign.

Ebay seems to have a number of Subaru SVX water pumps listed, for example:
https://www.ebay.com/itm/225212447283
I don't know if that is a good seller or not, or if they are correctly describing the item for sale.

But the bottom line: Don't skip the water pump.

Re: Water pump replacements?
 

Tks, Irox. ALWAYS appreciate an expert pov.

Yes, I saw the ebay listing, but I was concerned that the ebay water pump only shows TWO outlets...and I believe our SVX water pumps have THREE outlets.
Is this correct?
And I thought that the 3rd outlet (the one by itself on the "left" side) went to the oil cooler.
Is this correct?

Tks for your patience and advice.
BobSVX96.

Re: Water pump replacements?
 

Hi BobSVX96,

The water in the ebay link I sent has 3 outlets. There are two small outlets, and one big one. All three are visible in the picture in the ad, but it's not obvious that the large hole is another outlet. Note the picture only shows one side, the front, of the pump, and doesn't show the side that mates to the engine (so there is another large hole on the back which isn't shown).

Looking at the ebay pic, the large opening to the left side of the pulley is the main outlet. There is another fitting that bolts onto the large opening and allows the large diameter radiator hose to connect to the water pump. Note, you much remove this fitting off of your old water pump and install it on the new pump.

Hope that helps!

Re: Water pump replacements?
 

Tks, Irox. You are one of the things I love about this forum: pragmatic help with a side of education!

In the spirit of eduction, can you pls look at the picture in the #3 post below...the pic that shows "the pump from the vehicle, with three outlets, one of them towards the oil cooler."

If we're counting the large opening by the pulley (the main outlet) as one of the outlets, then aren't there FOUR outlets?
In Mika's pic, there's the (#1) large opening, the (#2) outlet that goes to the top of the pic (I think Mika suggests that this goes to the oil cooler), the (#3) left outlet that goes to the bottom of the pic, and (#4) the right outlet that goes to the bottom of the pic.

Have I got this wrong? Am I seeing one of these outlets incorrectly?

Sorry for my confusion. I humbly ask for a bit more help.
Tks again, B.

Re: Water pump replacements?
 

Hi BobSVX96,

thanks for the explanation, I now understand what you mean about the 3 outlets.

I've got a spare water pump I am planning to install soon. This one is a 2 outlet pump, but it looks like the casting would support another outlet, opposite side to the 2 outlets. I am guesting it is possible to drill the hole and press a connector sleeve (not sure the term for them) into the hole for connecting up another hose.

I took a picture:
https://photos.app.goo.gl/P46PPyCTu9H6FRYw8
The place the fitting would be installed is in the upper left.

I took a picture of the outlet fittings for reference:
https://photos.app.goo.gl/faemdn3WtrbHVZ878
Note the fittings are different sizes. One appears to be 5/8" and the other 1/2".

I am not sure which fitting you would need for your oil cooler, but I do see fittings available, for example:
https://www.summitracing.com/parts/fss-84716

I would image most small machine shop could perform the modification, or you would do it at home if you have drill press and a press. Although looking at my pump, it was either dropped or they put the smaller fitting in using a hammer.

Re: Water pump replacements?
 

The main reason to replace the water pump when replacing the timing belt every 100,000 km is because it cannot be replaced without removing the timing belt. The life of the pump may be a little longer. Not limited to SVX, if you don't plan to drive another 100,000 km and want to use the car just for a little more, I think you have the option of not replacing it.

Pls check the leak from water pump and check it round smoothly at least.

Or, you can replace pump after you get it. Morever, it is unlikely that the timing belt will break immediately even after a little over 100,000 km. The EG33 is not a very high-revving engine, and since it is AT, there is no possibility of excessive engine braking caused by suddenly engaging the clutch meet. I don't think EG33 need to be as nervous as the EJ20 I own (rev limit is 7800 rpm).

I skipped replacing the WP when replacing the timing belt last time on my sister's SUBARU (Engine is EN07). She has done 160,000 km with no problems though she always drives very gently.

FYI

Re: Water pump replacements?
 

I'll add a few things.

I've never seen WP lock up. If there is a problem with the coolant, for example a large amount of rust, the impeller may lock up due to corrosion.

I have replaced WP and timing belts on more than 10 SUBARUs which own by me, family and friends, and I think the first sign of damage is a coolant leak.

Coolant leaks from around the impeller shaft. The shaft is sealed with a rubber seal and spring, but as the seal deteriorates or the shaft wears, it seems likely that leaks will occur. The degree of deterioration is thought to largely depend on the environment in which the car is used and the condition of the coolant.

I'm not saying replacing it is mandatory, but it's a well-known fact that it's safer to replace it if you can get a compatible product.

Re: Water pump replacements?
 

Hi Noriyasu,

I have repaired a Subaru (1990 Legacy with the 2.2L engine) that has a seized water pump. From what I can tell, once the pump stops turning (or stiffens up and becomes hard to turn), the time belt will continue to rub over the WP pulley, this puts tension in part of the belt (as the seized pulley now pulls on the belt) putting extra stress on the idler pulleys. Eventually the idler pulley bearing will fail, shooting ball bearing every where and causing the timing belt to come off.

Fortunately the 3.3 and 2.2 engines are non-interference engines and the vehicle could be repaired. Although I think the incident would shorten the life expectancy of the engine.

Even if your water pump doesn't seize completely, as it degrades it will get stiffer to turn, the this put stress on other components driven by the timing belt.

I do agree that it is also easier to change the PW when you do the timing belt, but there are good reasons to change it before it fails.

Re: Water pump replacements?
 

I also agree with you said. its case by case.

There may be cases like that. Before the WP completely stopped working, I think there were signs such as belt rubbing sounds and the time it took for the water temperature to rise abnormally quickly.

For users who do not notice such abnormalities, preventive replacement is essential.

When using a classic car, the number of parts that cannot be repaired increases. There will be more cases where we have to be careful for car condition when driving.

Re: Water pump replacements?
 

Hi,

The point of this problem is that it is not clear which compatible WPs will fit SVX.

There are several third-party versions for sale on eBay, Amazon, etc., but I've heard from Mika and seen review by others that the WP sold for SVX doesn't fit.

Unfortunately, the compatibility information on the internet doesn't seem to be very accurate.

In my case, I don't drive the SVX so often, so I probably won't replace the WP again. However, it is a serious problem for those who need now. I hope Mika finds usable one.

Re: Water pump replacements?
 

All EU Spec SVX have the oil cooler, its one of the measures to get them Autobahn ready. Another one are the vented brake discs on the rear which -big surprise- arent available anymore, just like the water pumps.

Basicly the go to is that you only change the SVX waterpump if you absolutely have to and you always look for a company that restores the old one.

Another option was to get a foreign water pump (usually US as its cheapest to order from them) and have a company weld on the missing inlet.

But afaik original water pumps are out of stock completely and cant be ordered anywhere anymore. The gmb waterpumps might be a good replacement but I hope some americans can give some information on them. The GMB head gasket and timing belt stuff is usually pretty good.

Re: Water pump replacements?
 

Hello, I understand the reason for the third outlet. Thanks.

And, I agree with quality of GMB. I used GMB WP for old SUBARUs (not SVX) and no problem for now.

By the way, the oil cooler transfers the heat from the engine oil to the coolant. The water temperature in SVX tends to rise to begin with, but I feel like this will accelerate it. Does the EU specification SVX also have a upgraded radiator?

The water thermometer in the meter cluster has hysteresis, so you cannot see changes in temperature within the normal range. If you look at the SSM, you can clearly see that the water temperature is rising quickly.

BTW, for the 3rd outlet for oil-cooler, wouldn't it be safer to add an outlet with a T-joint? I am reluctant to modify WP.

Re: Water pump replacements?
 

Great help, everyone. Tks.

In summary...
EU spec SVX has 3 "barb" water pump.
US spec has 2 barb water pump.
Neither is available from Subaru.

A few non-OEM suppliers claim proper fit, but not verified by anyone on this site.
For non-OEM, I have seen:
GMB: https://gmb.net/product/160-2050/
Carquest: https://shop.advanceautoparts.com/p/...ctedStore=7616
USMW: https://www.usmotorworks.com/catalog/

So, bottom line...
(1) Can anyone on this forum verify the fit of any of these 3 water pumps...or any other available non-OEM water pump?
(2) And if this forum comes up blank for a verified WP replacement, then just keep my current WP...roll the dice...and look out for coolant leaks for the foreseeable future.

Much appreciated. And feel free to correct or add anything.
Cheers, B.

Re: Water pump replacements?
 

Please note that I am talking about a very small amount of coolant leak, not a loss of coolant. A small leak can see dry coolant on the underside of the WP. Usually it is green or reddish whitish, often we can see it on radiator hoses.

Re: Water pump replacements?
 

I'm currently overhauling another Subaru's engine.

I took a photo of the coolant leak, so I'm attaching it for reference.

This engine is a used engine that has been used for about 60,000km, so its condition is not well known.