Peterson Fluid Systems Y-Block Fitting, Single 16 AN Female Inlet, Dual 12 AN Male Outlet, Aluminum SKU PET-10-1726 $230.24 Quantity discounts available QuantityPrice (0)No Reviews yet Number of Pieces Item Custom Price Quantity -+ Add to Cart Details Peterson's B-Nut manifold allows the use of a -16 or -20 AN female swivel nut at the radiator and 2 ea. -12 or -16 AN hoses to the cylinder heads. Use... Details Back DetailsPeterson's B-Nut manifold allows the use of a -16 or -20 AN female swivel nut at the radiator and 2 ea. -12 or -16 AN hoses to the cylinder heads. Used in NASCAR competition. Ratings & ReviewsNo reviews availableBe the first to Write a Review