Hamburger’s TRUE-DUAL Remote Double oil filter relocation bases route EVERY DROP of oil through BOTH filters every time it enters the unit for truly double filtered engine oil. Durable enough for virtually any motor vehicle application. Click the MORE INFO tab below for more information. True Double Filtering of Engine Oil. Ultra High Flow Design (-12AN Ports) Ideal For Race, Diesel and Marine applications. Dense 6061-T6 Aluminum Billet Construction. Built-In Instrumentation Port. Lifetime Warranty All Hamburger’s Oil Filter Relocation Units come pre-drilled with 3/8"-16 mounting holes for an easier, more secure installation. For Hamburger's pre-fabricated Mounting Plates, please refer to the Mounting bracket section of the site or click here.