Vibrant Performance HD Clamp Union Sleeves are designed for use with Vibrant’s HD Clamp assemblies, providing a secure and precise connection between tubing sections. Machined from durable 6061 aluminum and finished with a hard anodized black coating, these union sleeves deliver strength, corrosion resistance, and a precise fit. Intended for 3.000" HD Clamp applications, they ensure consistent alignment and sealing in high-performance boosted, intake, and exhaust systems.