This glow plug brush cleaning kit has been designed to offer an effective and efficient glow plug aperture cleaning solution. When glow plugs require replacing, it is best practice to properly clean out the glow plug aperture within the cylinder head, particularly around the area of the glow plug heater element, threads and sealing area to ensure the glow plugs seal correctly and can be properly torqued down. Failure to do so has been proven to dramatically reduce the service life of the new glow plugs.