Used Pillars (A, B, C Pillars)

We list 2 used Pillars (A, B, C Pillars) units from 1 sellers spanning 2 makes. The rear quarter window regulator controls the small window in the rear quarter panel area, typically found on four-door sedans, SUVs, and some coupes. Unlike the main door windows that slide up and down, many rear quarter windows only tilt or pop out slightly for ventilation. The regulator mechanism is smaller and uses a different track system than standard door window regulators. When it fails, the quarter glass either will not open, will not close, or rattles loosely in the frame. These regulators are model-specific and vary between body styles. A sedan quarter window regulator will not fit the same model in wagon or hatchback form. The motor, cable routing, and mounting bracket all differ. Our sellers confirm fitment details and note whether the unit includes the motor or just the mechanical regulator. Top makes include Mercedes Benz, Bmw. Browse our Pillars (A, B, C Pillars) listings to find a working replacement and restore your rear quarter window function.