I bought this for 60% less than the OEM gas cap. I've been using it for 7 months but still the check engine light (P0456?) came on intermittently. So instead of dealing with the check engine light and clearing it with an OBDII reader, I paid twice as much for an OEM gas cap. Maybe the gas cap works on other cars and some other Subaru but it didn't work on my car. I would give 3 (or two) stars out of 5.
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