These are the OEM Subaru Oil Coolers, which we recommend you replace if you have had any type of bearing failure. Pieces of metal from such failures can get lodged in the oil cooler, and there is no way to effectively flush them out. If you choose to re-use your existing oil cooler, there is a chance that one of those pieces of metal may come loose and cause another failure. Don't risk it! We have these available and ready to include in your engine build order! We also have just the gasket listed below, in case you feel comfortable that no metal fragments made their way into the cooler and wish to just replace the gasket. Also, the post for the Oil Filter, or the "Oil Cooler Connector" is listed below for customers wishing to switch from one style oil cooler to another. If you are not sure which parts you need, just give us a call at 800-830-6675! 2002 - 2005 Subaru WRX EJ205 and 2004 - 2007 STi EJ257
2006 - 2007 Subaru WRX EJ255
2008 - 2010 Subaru STi
2005 - 2009 Subaru Legacy GT
Oil Cooler Gasket
This gasket is included with the above Oil Coolers from Subaru. You will only need this gasket if you are going to try to re-use your Oil Cooler.
Oil Filter Post (For 21311AA051 and 21311AA120)
This is the post which both holds on the oil cooler to the block, as well as has the receiver threads for your oil filter. It is sometimes necessary if you are either switching to the other style cooler, or simply need to replace the one you have.
This post is for Oil Cooler part #s 21311AA051 and 21311AA120 For the 2002-2005 Subaru WRX and 2004-2010 STi.
Oil Filter Post (For 21311AA071)
This is the post which both holds on the oil cooler to the block, as
well as has the receiver threads for your oil filter. It is sometimes
necessary if you are either switching to a different style cooler, or simply
need to replace the one you have.
This post is for Oil Cooler part # 21311AA071 For the 2006-2007 Subaru WRX
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