Port Side Log Style Manifold for an OMC. It will fit a small block GM from 1978 to about 1988. It uses the Barr # OMC-20-982680 Riser Manifold gasket and mounting hardware to mount to head are included. This item replaces OMC #s: 910144, 909279, 912442; Osco # 2442; GLM # 51420; Sierra # 18-1903; Mallory # 9-40601
Barr Manifolds and Risers come with a 3-year limited warranty (PDF)!