B Pillar
The vertical roof support structure located between the front and rear doors on a typical vehicle. It corresponds with the A pillar located on either side of the windshield at the front of the car and the C pillar which sits on either side of the rear window on a typical sedan. On SUVs, minivans and wagons with extended cargo areas, the C Pillar is the vertical structure behind the rear door while the vertical supports at the rear of the vehicle are called D pillars.
