The John Deere RE559666 is an authentic OEM fuel line designed for the leak-off carrier to SM connection in various John Deere agricultural machines. This critical component ensures reliable fuel delivery and prevents leaks, maintaining the integrity and efficiency of the fuel system. Manufactured to John Deere's rigorous standards, it guarantees a precise fit and long-lasting durability, crucial for the demanding conditions of agricultural operations. Using genuine John Deere parts like the RE559666 helps maintain machine performance and extends the lifespan of the equipment.