This is the most vital part for any street or track driven vehicle.
Most vehicles are still running on the original switches and are bound to fail inevitably.
For the sake of safety and to make sure you do not fail inspection, get disqualified from running a race or HPDE due to non-functioning brake lights, replace this simple switch for a peace of mind or keep a spare in your toolbox.
This is a stock two-pole replacement switch.
Application - BMW E30 3 Series (all models)