The GMC Sierra 3500 seat belt height adjuster b pillar 2000 is a black, adjustable seat belt component designed for the driver's side of the front seat. This genuine GMC part, with manufacturer part number 2at092151, is 8 inches long and 2 inches tall, providing a perfect fit for the specified vehicle. The adjuster features a compact design, measuring 2 inches in width, and is a single piece included in the pack. With its adjustable feature and specific placement on the vehicle, this seat belt adjuster ensures optimal safety and comfort for the driver.