Yes, it is a bolt and a clip.
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The clip slides over the overlapped section of the two halves.
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I remember finding the bolt missing on my
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'87 NA, while the clip was actually in place.
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This was after it had developed the dreaded crack across the upper middle section of the raised half.
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I replaced both sections of the splitter and added a bolt to the clip, which significantly stiffened that section of the splitters, and I believe, makes it less prone to cracking.
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I've had no issues with it for the 80k or so miles, since I added the bolt, and I can sense that when it occasionally comes up against a wheel stop or curb that it flexes much less.
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I decided to take a look at my
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'89 SC, and sure enough, it is missing both the clip and the bolt.
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Could Toyota have possibly been any cheaper?!
![d'oh! #-o](./images/smilies/eusa_doh.gif)