The Grand Rock Adapter is a practical and durable 4 Inch OD to 4.75 Inch Flare Turbo/Manifold Adapter designed for use with V-Band Clamp #VB-475C. Made of aluminized material, this adapter is suitable for a range of applications including L10 Cummins, 3176 Cat., 8.2T Detroit Diesel, 6-71, and 12V-71 models. With measurements of 4" OD x 4.75" x 4", this adapter is sold individually and fits most L10 Cummins, 3176 Cat., 8.2T Detroit Diesel, 6-71, and 12V-71 models. It's a practical and reliable solution for your turbo and manifold needs.