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Old 07-23-2019, 12:21 PM   #76
Valarius Starchaser
Scooby Newbie
Member#: 459312
Join Date: Dec 2016
Chapter/Region: MWSOC
2004 WRX Wagon
Hybrid 6MT Swapped WRB


Originally Posted by 02WRX84 View Post
Great write up man! Great stuff! Where does the hose just below the IACV and to the right of it go?

Iím looking around and notice that there isnít a hose connected there or on the throttle body under the inter cooler. Iím thinking the hose popped off and that they should have a hose connected to each other. What do you guys think?

Thatís a coolant line

A lot of guys remove it never understood why no matter what climate your in what the gain is to doing it

To my recollection itís a cold start/emissions type system
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Old 08-03-2019, 09:46 PM   #77
Mountain Trek
Scooby Newbie
Member#: 441288
Join Date: Feb 2016
2004 Forester 2.5XT


Would this be the same setup for a 2.5XT Forester 2004 , or is there any significant difference to the sizes and lengths of hose needed? I had several crumble when getting the heads off.
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Old 08-14-2019, 11:15 PM   #78
Scooby Newbie
Member#: 147078
Join Date: Apr 2007
Chapter/Region: BAIC
Location: sf bay area, ca
2006 WRX Wagon


Great write up! Been using their hoses for years - with rare exception - I wouldn't use anything else.

Hose D and G - those I had issue with. Those are for the transport of oil vapors (PCV) and oil isn't friendly (in my experience) with those hoses. Hose D in specific sheered off - it look like someone cut it STRAIGHT at the top end of the breather of the head itself - the heat, bend + less than friendly oil vapors.

Absolutely everywhere else, no issues.

I've also run their hoses in other vehicles like both of my wife's (1 wife, 2 cars) Outbacks and my 1986 Mr2 - stellar results in all 3 vehicles!


I've heard of a magical coolant hose that runs UNDER the throttle body (2006 WRX in my case). Just curious if I missed something, as I cannot find it on your WRX.

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Old 12-06-2019, 05:18 PM   #79
Scooby Newbie
Member#: 457779
Join Date: Nov 2016

I just installed a new radiator and am having issues with HOSE H. It is the factory hose so I plan on replacing it but the hose itself seems barely to big compared to being snug on my old radiator. HOSE I is slightly smaller (at least on my car) and seems like I need that same size on HOSE I.
Sorry if that is confusing or if I am on the wrong thread. Thanks

Last edited by Bdufala; 12-06-2019 at 11:59 PM. Reason: I figured it out
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Old 01-16-2020, 07:47 PM   #80
Scooby Specialist
Member#: 54794
Join Date: Feb 2004
Location: Bay Area
Jan 2004 WRX new
JAN2020 282,000 miles


pic of heater hvac hoses below

part nos are 72411fe001 and 72421fe010
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