Abstract: A device for altering molecular bonds in fluids (1) having a substantially tubular housing (2). The substantially tubular housing has a perimeter wall (3), a first end (4), a second end (5), an inner surface (6) and an outer surface (7). Caps (8) are located on the first end and on the second end. One or more geometrically shaped extensions (11) may be located on the caps to allow a user to rotate the caps and/or the entire housing with a wrench. An aperture is located on each cap to allow liquid to pass though into or out of the housing. Threads (10) are located within the apertures to allow a user to install the device for altering molecular bonds in fluids in a fuel line, water line or other liquid conduit. A plurality of magnets (13) are secured within one or more casings (14) that separate and hold the magnets in place within the housing.