Need car parts? Select your vehicle
Reading Time: 2 minutes

The vertical support that provides structural integrity to a vehicle’s roof is called a roof pillar. Most cars have three different pillars, but station wagons, minivans, and SUVs usually have at least four. Each pillar is assigned a letter from A to D to indicate where it is on the vehicle.

Where Are the Different Pillars Located?

Pillars A, B, and C are sometimes referred to as the front, center, and rear pillars. However, this only applies to sedans, as station wagons, minivans, and SUVs have extended cargo areas with support structures called D pillars. This naming convention is used by manufacturers to identify roof pillars from the side.

car pillars
Pillars A, B, and C are sometimes referred to as the front, center, and rear pillars, while D pillars are only applicable to station wagons, minivans, and SUVs that have extended cargo areas with support structures.

A Pillar

The A pillar is the support structure that holds the windshield in place. It’s located in the front of the vehicle. The pillar’s location is the same for sedans, station wagons, minivans, and SUVs.

B Pillar

The B pillar is the support structure in the center of the vehicle. It’s located between the A pillar and the C pillar. Limousines can have more than one B pillar (B1, B2, and so on).

C Pillar

The C Pillar is the support structure located on either side of a sedan’s rear window. The pillar’s location is different for station wagons, minivans, and SUVs. Rather than being the structure holding the rear window in place, the C pillar, in this case, describes the vertical structure behind the rear door.

D Pillar

The D pillar replaces the C pillar as the rearmost support structure on station wagons, minivans, and SUVs. It corresponds with the C pillar located behind the rear door.

convertible car
Convertibles don’t usually have B pillars behind their front doors, which leaves a gap when the doors are opened.

Why Do You Need to Know the Difference Between Pillars?

Knowing the difference between roof pillars is important because manufacturers use them in their specifications. Some cars have thicker pillars that can limit your road visibility. A reviewer might say that a vehicle’s A pillar is wide. That means the front roof pillars are wide enough to create a blind spot. Many classic cars have slimmer A pillars that provide better visibility at the cost of structural stability and strength. Convertibles don’t usually have B pillars behind their front doors, which leaves a gap when the doors are opened.

To cut it short, make sure to consider a vehicle’s roof pillars when window shopping because they can affect your vision on the road.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

File Under : Features
fender
Subscribe
Notify of
guest
0 Comments
Inline Feedbacks
View all comments
Carparts Answerbase BE PART OF OUR COMMUNITY: Share your knowledge & help fellow drivers Join Now
Copyright ©2022 CarParts.com, Inc. All Rights Reserved.