Sierra International 18-1973 Elbow 18-1973. Designed to be interchangeable with the following: Barr MC-20-55538 Mallory 9-40553 Mercruiser 55538A2 39920A1 39920 Osco 5538. Each Sierra product meets or exceeds the original equipment part it replaces....
Sierra International 18-1973 Elbow 18-1973. Designed to be interchangeable with the following: Barr MC-20-55538 Mallory 9-40553 Mercruiser 55538A2 39920A1 39920 Osco 5538. Each Sierra product meets or exceeds the original equipment part it replaces....
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