This gasket is intended for use on the adapters for both the rear retro-style bike and sidecar light assemblies. If you own a Ural Retro, this can be used as a replacement gasket for either the rear sidecar lights or rear bike lights.
If you would like to install retro-style lights on another Ural model, you will need two of these gaskets (one for the sidecar, one for the bike), a retro front light adapter gasket, the three retro light adapters (rear sidecar, front sidecar, and rear bike) and the three light assemblies (front sidecar, rear sidecar, and rear bike).