Trim/Torque Tab 1991 70HP ?

[Chris73Cobia]

I am looking for the above part, the little fin above the prop that makes the boat go straight. Seems mine just got chewed up on the lake the other day. I'm sure there is a compatible mercury part, so either the part number or what year/HP combo to use to find the mercury part would be great.

Thanks much.

For anyone who was reading my previous posts going from a 'Rude 85 HP to Force 70, My speed has gone from 27mph (GPS) max to 34, but its hard to drive at that speed because the torque tab isn't in good shape. I love this new motor though...