Sierra 18-3845 Head Gasket
Sierra replacement head gasket for Mercury Marine engines.
For 4-Stroke O/B's 40/45/50 Hp s/n 0G760300 & up
Interchangeable with:
Mercury...
Sierra 18-3839 Head Gasket for Johnson & Evinrude
Use for Engine Models: 185hp (1990-93) 2 head gaskets required per engine, 200hp 2 head gaskets required per engine (1988-93)...