A two-piece jet engine igniter assembly includes a front section and a rear section. When the igniter assembly is installed in an aircraft, either the front section or the rear section is removable for service or replacement. The front section includes a detachable cooling module. The cooling module includes a cooling tube adapter and a rear ferrule attached at either end of a flexible conduit. The conduit surrounds a thin wall polytetrafluorethalene liner, a braided tube and a cable support. The braided tube is electrically connected to the flexible conduit. Another version of the cooling module, designed for serviceability, includes a cooling tube adapter and a modified rear ferrule attached at either end of a flexible conduit, however a thick wall polytetrafluorethalene liner is removably secured within the flexible conduit by a circular clip sized and shaped to fit through the cylindrical bore of the modified rear ferrule when compressed.