The Upper Dishrack Rail is an OEM replacement part for Frigidaire dishwashers. Made of durable steel, the rails withstand years of constant extension, retraction, and weight loads. Causes of bad rails can include cracks or breaks developing from repeated sliding motions over decades of use. Mineral buildup from hard water may also corrode and weaken internal rail structures. Symptoms of a bad Upper Dishrack Rail include: Rack that will not stay locked securely in position Tines that collapse or slip out of adjustment Rust accumulating on rail surfaces Wheels, bearings or rollers sticking during operation This Frigidaire OEM replacement part is also compatible with Electrolux, Gibson, Kelvinator, and some Kenmore ranges.Part Number 154597801 (AP4019645) replaces 1258729, 154232701, AH1525080, EA1525080, PS1525080.