The 3.86 Inch OD to 4 Inch Turbo/Manifold Adapter is a durable and practical solution for fitting most OE#3910995 8.3L Cummins models. This aluminized adapter, used with V-Band Clamp #VB-413C, features a machine-styled design and measures 3.86" OD x 4.00" x 2.125". Its sturdy construction ensures a secure fit, making it a reliable choice for turbo and manifold applications. With its precise measurements and compatibility with OE#3910995 8.3L Cummins, this adapter is a convenient and essential component for your vehicle.