Call
WWW.Partman.com @ 1-800-382-9335
OMC Ford 2.3L 4 Cylinder in line 1987-1990
Part # 986041 Ex Manifold
Part # 913393 Gasket - M to Head
Part # 912477 Gasket - Riser to Man
Part # 914766 Riser
http://marineengineparts.com/18%20ex...%20122-160.pdf PAGE 146