Fuel Hanger Plumbing Kit for Cadillac CTS-V Stainless Radium Engineering - USA-RAD-20-1325-03 - 20-1325-03/5 FUEL HANGER PLUMBING KIT, 08-15 CTS-VVEHICLE COMPATIBILITY08-15 Cadillac CTS-V These fuel hanger plumbing kits are identical with one exception, the filter media: P/N: 20-1325-03 uses a 10 micron stainless steel element. P/N: 20-1325-05 uses a 6 micron microglass element. The CTS-V plumbing kits feature dual 6AN PTFE feed lines that route from the fuel hat to the fuel filter. Two fuel lines are required here for the following reasons: 1. A single 8AN fuel line will not fit between the fuel tank and the unibody. The larger combined surface area of two 6AN lines fits nicely.2. The back half of the OEM fuel line is reused. The stock fuel line incorporates the OEM fuel pressure sensor that is needed for ECU diagnostics. Instruction PDF