The interior door handle, as the name implies, is the handle that operates the door latch to open the vehicle doors from the inside of the car. The interior door handle is linked to the door latch via a straight mechanical linkage or cable mechanism, and contains a locking mechanism for security. Interior door handles see a large amount of wear and tear due to frequency of use and passenger abuse. euromotiv is your source for genuine and aftermarket interior door handles and bolt covers should you need to purchase a replacement.