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There are two very much visible when you open the hood on the back of the headlight door, and there are two on the limits for the pivot arm. They all four are of the same design, but function different depending on where they are located. The pivot ones are bumped against their side where the headlight door ones are bumped on their tops/edges
And........there is one more thing to know or think about. All of them are the same size so you can interchange them (good one for a worn one) plus they're symmetrical so you can turn one over as well (good side to replace the worn side).