I have found no reference as to size but it looks close to 3/8" id gas hose which would translate to 5/8 to 3/4" od. If that is the case the id might be 5/8 to 3/4".
One part # is BSR-1K-DP. Another is BSR-1K-CB.
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'75 Cuddy with '00 Johnson Ocean Pro 150 horse
Benny
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