Vent, Dorade / Cowl, 4 In.
Entire assembly including vent and collar.  4 inches diameter, 5-7/8 inches tall.  The hole for the vent is 4-1/4 inches.
336 owners:  your boat may have 
3 inch vents.  Please measure before ordering.
CAUTION: Do not use polysulfide compound adhesive/sealers, acetone, or cleaning solvents, as they will melt the plastic.
We're adding more parts daily.  Can't find the part you need? Contact us.