+3 Upper Intake Flange Plenum for 6.5l Turbo Diesel Chevy GMC KB-6.5l-UIF $45.95 In stock Quantity: 1 Add to Bag Product Details CNC cut intake flange for 6.5l Turbo Diesel engines. Made from 3/8" Steel Plate. Accepts 3.0" Tube. Save this product for later Favorite