Designed for classic cars and trucks, this side window bumper fits seamlessly into the vent frame at the top of the side window, ensuring a snug and secure fit. Replacing OEM #4180904-5, it is crafted with a durable steel core, just like the original, for long-lasting strength and reliability. This pair, including both right and left bumpers, is easy to install and provides essential protection for your side window glass. Compatible with a wide range of vehicles from 1951 to 1958, including iconic models like the Buick Roadmaster, Cadillac Eldorado, Chevrolet Bel Air, and Pontiac Star Chief, this part is a must-have for restoring or maintaining your classic ride. Backed by Metro's 30-year Platinum Warranty, you can trust in its quality and performance for decades to come.