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In case anyone cares, here are the boxes that my K&N and OEM air filters came in. In the larger version of the photo you can see the K&N part number: SU-5589. |
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Here are the two air filters side-by-side. The K&N filter has the restrictor installed. |
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This gives you some idea of what the restrictor looks like. It's upside-down on the floor. |
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And here is the restrictor, right-side-up, sitting next to the throat of the air filter. It just pushes on. |