MerCruiser 4 cylinder manifold exhaust kit by Sierra

Fits most 2.5 & 3.0L earlier than 1990

Replaces:
 • MerCruiser part#: 860235A04
 • Marine Power 600333 Ols
 • Sierra part#: 18-1956-2 superseded to New Sierra Part#: 18-1956-3

Sierra manifolds are painted, packaged and leak tested.