Aeroflow Billet Y-Block with 1/8" NPT Port (AF451-08BLK)FUEL BLOCK 3 8 3 8 IN OUT Black Finish. 3 8" NPT Inlet, 3 8" NPT Outlets Part Number: AF451 08BLK These fuel Y blocks from Aeroflow Performance are a great addition to our expanding range of fittings and adapters. The Y Blocks allow the user to have dual hoses running side by side with each other in any application. Featuring female NPT ports on both ends in various NPT sizes and a 1 8" NPT port. Constructed from 6061 T 6 aluminium with integrated