Thru hull fittings
ROCA offers all the high-quality thru-hull fittings you are looking for. They’re easy to install, elegant, strong, and flexible.
For boat builders that know that a quality fit and finish pays off.
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Drain plug
A CNC-machined drain plug in durable AISI 316 stainless steel. The drain plug comes with a strong lanyard that reduces the risk of losing the plug.Select options
Thru-hull 1″, forged
GEM Forged Thru-Hulls are designed with a revolutionary single-piece forging process. This solid cast 316 Stainless Steel thru-hull fitting is polished with brilliance, enhancing as well as securing your boat better!Select options
Adapter 1″, straight
The straight adapter of 1" is a thru-hull fitting of immense importance, especially as part of marine equipment.Select options
Adapter 1″, 90°
A 90° angled adapter in durable plastic for a thru-hull fitting, used to expel wastewater or to let seawater in.Select options
Thru-hull 1.5″, forged
GEM Forged corrosion-resistant thru-hull fittings are designed with a revolutionary single-piece forging process from semi-conductor tubing that facilitates quick one-man installation.Select options
Adapter 1.5″, straight
A straight adapter for a thru-hull fitting used to expel wastewater or to let seawater in.Select options
Adapter 1.5″, 90°
90° angled adapters in durable plastic for the 1.5" or 2" thru-hull fittings on a boat.Select options
Duck bill 1.5″
This duckbill flapper valve is made of 1.5″ valves, ideally used with marine equipment. These valves provide effective drainage of the hull of the boat.Select options
Cable outlet
The two cable outlets provides the ability to remove and replace connectors while allowing waterproof co-axial installation.Select options
Cable outlet, flex
This watertight flexible cable feed-through is watertight and ideal to seal steering cables, originating from outboard motors to inside the deck.Select options
Adjustable weil drain
The adjustable weil drain allows thru-hulls to disseminate waste water manufactures a variety of thru-hulls for your specific marine application.Select options
Drain plug, brass
The brass drain plug from ROCA marine equipment fits flush to the transom or exterior, to drain water to prevent moisture build-up and rot damage on the boat.Select options