Radium 4-Port Manifold, Bosch 044 PumpsRadium 4 Port Manifold Universal Fuel & Coolant Plumbing This CNC machined aluminium 4 port manifold provides flexibility when plumbing a fuel or coolant system using multiple pumps or fuel rails. Featuring two 6AN ORB (9 16 18 thread) ports and two 8AN ORB (3 4 16 thread) ports, the manifold measures approximately 4. 5" in length. Fully anodized and resistant to all fuel types including E85, ethanol, and methanol. Five kit configurations are