Prestone Products Corporation manufactures and markets antifreeze/coolant products and car care/performance chemicals. The company offers oil, air, transmission, and fuel filters; spark plugs and ignition wire sets; car care products, such as cooling system treatments, ice fighters, windshield washer fluids, aerosol products, automatic transmission fluids, brake fluids, power steering fluids, fuel additives, and accessories; and cooling system products, including radiator care and stop leak, radiator flush and cleaner, radiator sealer, and radiator stop leak products. It also provides T-shirts and sweats, dress and polo shirts, outerwear, and hats; bumper stickers/decal products, auto visor CD cases, key rings, CD cases, car kits, travel mugs, travel tumblers, and fleece blankets; drawstring and duffel bags; umbrella and other golf products; and ceramic mugs, knives, padfolios, pocket watches, and stools through its online store. The company was founded in 1927 and is based in Danbury, Connecticut. As of June 9, 1997, Prestone Products Corporation operates as a subsidiary of Honeywell International Inc.