+3 Up Pipe Exhaust Manifold Outlet Flange for 6.6l 2001-2016 Duramax Chevy GMC KB-LB7-LML-MOF $20.95 In stock Quantity: 1 Add to Bag Product Details Up pipe exhaust manifold outlet flange for LB7, LLY, LBZ, LMM, & LML engines. Great for making your own turbo up pipes! 1/2" steel flange, accepts 2.0" tube. Fits RH or LH manifolds, can be used for passenger or drivers side up pipe. Save this product for later Favorite