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Old 09-13-2020, 05:30 PM   #1
Baron0Beefdip
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Member#: 518549
Join Date: Sep 2020
Location: upstate new york
Vehicle:
2011 impreza
blue

Default 2011 impreza head gasket change

I'm sure this has been talked about to death but this is my first time doing this job and any advice would be greatly appreciated.

The car: 2011 Impreza
Naturally aspirated SOHC EJ25 with T25 heads
bought used with 94k miles and now has 108k miles.

Time came for timing belt and water pump service and I noticed discolored coolant in the reservoir as well as some moisture underneath the driver-side head gasket.

The question: Which head gaskets do I get?
I've heard nothing but good things about six star HG set so I'm leaning towards them.
I also found an OEM MLS set that I like.
I've heard Fel-Pro's fail so those won't be an option for me.

I'll be pulling the engine, having the heads resurfaced by a machine shop if they don't pass the straight-edge test and using a high-grit sand-paper on the block. Iplan on buying new valve cover gaskets but I'm re-using the head bolts.

So, any advice for a first timer? Thanks guys

links to the parts below:

https://www.ebay.com/itm/NEW-Head-Ga...EAAOSwMmBVlyQS

https://sixstarbernie.com/i-23179113...SOHC%26go%3DGo
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Old 09-17-2020, 06:01 PM   #2
Baron0Beefdip
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Location: upstate new york
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2011 impreza
blue

Default

Wow. I guess this has been talked about to death.
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Old 09-18-2020, 08:46 AM   #3
Elbert Bass
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Member#: 283429
Join Date: May 2011
Chapter/Region: South East
Location: Down yonder.
Vehicle:
2016 Fuji Sunfire 03
Silver

Default

Use Subaru 11044AA770 They switched Outback/Legacy EJ25 to that MLS gasket in 2010.
I use it on all EJ25 as long as I have flat heads/block
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Old 10-26-2020, 05:20 PM   #4
RSmokos
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Join Date: Sep 2018
Location: Naperville, IL
Vehicle:
2008 STi
Silver

Default

Quote:
Originally Posted by Elbert Bass View Post
Use Subaru 11044AA770 They switched Outback/Legacy EJ25 to that MLS gasket in 2010.
I use it on all EJ25 as long as I have flat heads/block
I assume that part number gasket works on the 2009 WRX DOHC (D25) engine as well? Hate to piggyback on this, but didn't want to start another thread on the same head gasket.
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Old 10-31-2020, 10:53 AM   #5
Elbert Bass
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Join Date: May 2011
Chapter/Region: South East
Location: Down yonder.
Vehicle:
2016 Fuji Sunfire 03
Silver

Default

Quote:
Originally Posted by RSmokos View Post
I assume that part number gasket works on the 2009 WRX DOHC (D25) engine as well? Hate to piggyback on this, but didn't want to start another thread on the same head gasket.
Yes, same part number. D25 is a cylinder head type, not an engine. 2009 WRX has an EJ25 series engine - the block in particular.

Great resource for you - you can look up parts by model or use your VIN to find exact fits for your car. This is the same parts systems dealers use to most extent.
https://www.subaruexpress.com/
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Old 10-31-2020, 02:21 PM   #6
Vancouver98STi
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Join Date: Dec 2016
Chapter/Region: VIC
Location: Vancouver BC Canada
Vehicle:
1998 JDM Impreza STi
V4 GF8 White

Question A challenge to research JDM parts

Quote:
Originally Posted by Elbert Bass View Post

Great resource for you - you can look up parts by model or use your VIN to find exact fits for your car. This is the same parts systems dealers use to most extent.

Subaru Express
Are you aware of a similar Subaru site for JDM vehicles... preferably in English?
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Old 10-31-2020, 08:25 PM   #7
Elbert Bass
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Silver

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Quote:
Originally Posted by Vancouver98STi View Post
Are you aware of a similar Subaru site for JDM vehicles... preferably in English?
Nope. Subaru did not allow USA dealers to access any tech info for non-US models. Heck we couldn't even get info on Canadian models.
Try the tuning or engine sections of the forum here - there is probably info of that type there. I'm not really into modding crap so I don't spend time there.
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Old 10-31-2020, 08:56 PM   #8
Vancouver98STi
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Join Date: Dec 2016
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Location: Vancouver BC Canada
Vehicle:
1998 JDM Impreza STi
V4 GF8 White

Default

Quote:
Originally Posted by Elbert Bass View Post

Try the tuning or engine sections of the forum here - there is probably info of that type there. I'm not really into modding crap so I don't spend time there.
I'm not into engine "modding" all that much either... but as the owner of a JDM Impreza STi, it's often difficult to find information on the most mundane of parts.
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