The FuelTech FT450/FT550 6 Cylinder Universal A and B Harness were designed to be a universal fit for 6 cylinder engines. The A harness has all the components needed to make a easy installation on a 6 in line or V6 engine. With a few modifications this harness can fit many applications, saving time at the wiring process. The insulation and connectors are moisture, heat and oil resistant.