Early washer fluid bag

I'll work on getting you a bracket photo. The front edge of the vinyl cover was just glued down on my car. I removed it to clean and service the battery and spare tire area, then ordered some edge trim from Amazon to make future removal/replacement easier.

 

Just looked at mine, and there is no bracket. Just two of the Tenax style fasteners as used to hold the dash cover over the fuses/wiring. The ball studs for the fasteners are mounted directly through the fiberglass of the spare tire well, with a nut on the inside.

 

Here's a photo. Apologies for the quality.
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There should be a rubber moulding piece that holds the spare tire cover down. No glue. The same moulding that holds the other three sides of the tire cover down.

 

My 77 car does not have the other three sides held down by a molding. There are screws through the vinyl covered alloy paneling.

 

Other piece?

 

British car suppliers sell Tenax studs and retainers, or here's a link to another brand that is similar to the Ferrari design:

Loxx - Snap Fasteners Boat Marine Canvas Cover Snap Button Screw Studs Kit Stainless Steel Nickel Plated$21.80Amazon.comFree shipping

 

Image Unavailable, Please Login Here is a picture of my spare tire cover, the front of the cover is held in place by the moulding strip running across the car.

 

18899, build number 52.

 

Mine has screws on the sides, so I would say no to the threaded tabs.

 

OK, on my 22127 the metal plate that supports the cover is bolted on the side and rear.
The lid seal that pinches the sheet metal basically goes on top of the screwed plate.

But it does NOT have the raised bead edging on the front as in that photo, in fact as OP describes it simply wraps across the raditor support and glues down with contact cement.. Soft washer fluid bag.

Be glad to get some pictures soon....

 

My car (July 77, 22027) is as the center photo. I have, however, replaced the contact cement at the front edge with panel edge trim to make it easier to remove and replace the cover when required.