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01 Outback LL Bean
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2,367 Posts
Discussion Starter #1
I believe this only applies to the H6 cars in the 00-04 generation, but newer Subaru's have a damper.

I noticed the smell of fuel while visiting my mom over the holidays and eventually traced it to the fuel damper on the passenger side. I could not source one so I replaced it with a straight piece of hose. I might try to replace next time i'm visiting. The exact part for the H6 is sort of expensive and not available mostly because it comes with the exact length of fuel hose attached. I think Subaru part # 42086AG080 would work fine as a replacement and is much cheaper.
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2020 Outback Limited 2.5i
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8 Posts
The fuel damper is there to eliminate any pressure pulses that arise from the rapid opening and closing of the injectors. I met a Chrysler fuel system engineer at an SAE function that stated they probably weren't necessary anymore but everyone used one and they are cheap. Any fuel damper will work, so get the cheaper one you found (or run without it!).
 
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