Diamond Eye ADAPTER 4in ID-4in OD AL

This is a Diamond Eye Performance exhaust adapter, part number 400041. It's designed to connect a 4-inch inside diameter exhaust pipe to a 4-inch outside diameter exhaust component. This adapter is useful when you need to join two different sizes of exhaust tubing or when adapting a pipe to fit a specific muffler or tip. It's a straightforward piece that helps ensure a secure and leak-free connection in your exhaust system.

Made from aluminum, this adapter is lightweight and resistant to corrosion, which is important for exhaust components that are exposed to the elements. The adapter has a 4-inch inside diameter on one end, meaning it will slip over a 4-inch outside diameter pipe. The other end has a 4-inch outside diameter, designed to fit into a 4-inch inside diameter exhaust pipe or component. This setup allows for a smooth transition between the two parts, maintaining good exhaust flow.