Brand: Holley Performance Products
This special kit is designed as an add-on to the Holley 22 lb Magnetic HydraMat Installation Kit (Part No. HLY-16-204, sold separately). If your tank isn't made of magnet-attracting steel, simply place these backing magnets on the outside of the tank to give the magnetic bases in the mounting kit something to cling to.
Kit consists of four smooth magnets (no provision for mounting hardware), enough for one HydraMat installation kit. Works with aluminum or plastic fuel tanks. You can even use it on a steel tank to increase the holding power of the magnetic mount kit. Mounting kit sold separately.
Pro Tips: The cleaner your tank (inside and out), the better these magnets will stick. Be sure to place them on a flat surface (not on a ridge or corner) for best results. A piece of racer's tape over these magnets adds an extra layer of security.