This rare NOS part is a must-have for any collector or restorer of vintage Chevrolet Corvairs. The rear housing seal, with GM part number 6257476, fits Corvair models from 1960 to 1969. It is an original equipment manufacturer (OEM) part, ensuring the highest quality and authenticity. This vintage part is perfect for those looking to complete their restoration project or simply add a rare piece to their collection. With its General Motors brand and authentic OEM part number, this rear housing seal is a valuable addition to any vintage Chevrolet Corvair enthusiast's collection.