The rubber door handle gaskets on the E31 8 series, E32 7 series, E34 5 series and E36 3 series cars will all fail in time. The original BMW gasket dries up in the sun from UV exposure over the years causing cracking and crumbling. Unfortunately BMW does not sell the gaskets separately, so you must purchase the entire door handle if going with the genuine replacement. This can add up to several hundred dollars for a sedan. Instead, quality aftermarket gasket kits are what most people use, coming in at around $29 USD for a set of four gaskets. You can buy a set here. How to Remove the Door Handle Cover Plate and Gasket Open the door and look at the jam on the edge of the door With a nylon pry tool, remove the plastic cap covering the access hole. Avoid using a metal object for this step as it can damage your paint. Spray lubricant such as WD40 onto the sliding brass mechanism and allow to sit for a few minutes. …