2009-2018 Ram 1500 Water Leak Pressure Vent Fix 

I replaced my 3rd brake light gasket on my 2013 Ram 1500 and that didn’t fix my water leak under the rear passenger seat. I then ordered new pressure vents and my leak went away after installing these. I highly recommend doing these if you have an older Ram 1500. IIRC it was $30 a side for parts.