5303918476 Frigidaire Refrigerator Adaptive Defrost Control Board. Genuine factory replacement part. Replaces AP4909015, 241508001, 240554502, 240554501, 1614983, 240375803, 240545403, 5303918302, 5304429380, AH2582247, EA2582247, PS2582247. Fits many models. Click MORE DETAILS link for specific model coverage.