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Old 09-26-2014, 02:13 PM   #1
waffleone
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Exclamation 05 UEL headers fit on 07 impreza 2.5 ?

im looking at these after market headers tsudo but it says its only 97-05, so i was wondering if they will actually fit on my 07 2.5 impreza?
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Old 09-27-2014, 09:42 AM   #2
chazly413
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They will fit to the engine, but the rest of the exhaust system is different. So, no, it is not a bolt-on part. You'll need custom work or, I think, just a cat section from a previous RS. All I know is it's not bolt-on.
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Old 09-27-2014, 12:28 PM   #3
Dakine
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I noticed that too Waffle, another guy told me they would fit its just a tight fit i might just get a pair if its cheap.
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Old 10-01-2014, 07:53 PM   #4
Rudgers73
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It's not a tight fit, it's a totally different fit. Chazly is correct. The 05 routes the collector around toward the drivers side, then around the back of the oil pan. The 06 routes the collector in the front of the oil pan, towards the passenger side, through the first cat, then back.

It simply won't work as a bolt-on application


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Old 10-02-2014, 10:28 AM   #5
lpxltt
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If you go that route you will need to also replace the rest of your exhaust with a pre-06 as well as get a o2 extender for your two plugs and route them accordingly.

Direct bolt on is RalliSport Racing but expect to wait some time for them to be made. I received mine a couple of weeks ago and ordered them in March but for the quality, sound and slight boost of low end power it was worth the wait.
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Old 10-02-2014, 11:38 AM   #6
scoobywagon02
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A friend of mine used 98-05 headers on his 08 2.5i, you don't need the o2 sensor extender. If you follow the wiring, cut open the loom and there is enough wiring to be able to pull it through far enough. No splicing or parts required.
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Old 10-09-2014, 01:05 AM   #7
Double A-ron2.5i
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I was told 07 sti headers will work except you will need to cut and wield a bit for it to work. Give me some time and ill let you know how it turns out. I also have an 07 2.5i.
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Old 10-09-2014, 09:32 AM   #8
lpxltt
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Quote:
Originally Posted by scoobywagon02 View Post
A friend of mine used 98-05 headers on his 08 2.5i, you don't need the o2 sensor extender. If you follow the wiring, cut open the loom and there is enough wiring to be able to pull it through far enough. No splicing or parts required.
This is true, I should have added "without modifying your existing o2 plug location". I just left it out because some people do not want to touch electrical, even if it is just cutting open the loom.

Also should be noted that different after market cats could more the location of the o2 further back, making it not able to reach (not sure, have only seen it with a stock 05 cat)
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