Designed for boats needing a 1-1/2" inner-diameter plumbing connection, this Attwood thru-hull delivers durable, reliable performance above the waterline. It combines rugged stainless steel construction with a mirror-polished finish for a clean hull appearance you can trust.
-
Material: Cast from certified Enhanced 316 stainless steel for maximum strength and lifetime corrosion resistance.
-
Finish: Mirror-polished, passivated surfaces on all visible areas.
-
Size & Compatibility: 1-1/2" inner diameter hose; flange diameter 3"; total length 3-1/8".
-
Thread & Hose Connection: Short-thread design; Thread O.D. 1-7/8"; Thread Length 1-1/4"; barbed tails accommodate multiple hose clamps; Barb Length 1-1/2".
-
Hose Support: Thick sidewalls withstand continual stress and hose flexing.
-
Installation Features: Includes a silicone gasket; a channel under the flange holds a bead of sealant for a reliable seal; wrench flats or an end notch provide gripping surfaces for inside-hull tightening.
-
Above-Water-Line Suitability: Specifically designed for installation above the water line to minimize exposure and maintenance.
-
Hull Compatibility: Hole Saw Size 2"; Max Hull Thickness 5/8".
-
Brand / Model: Attwood Marine; Part No 66545-3.
This thru-hull delivers lasting performance with corrosion resistance from Enhanced 316 stainless steel and a durable, hose-friendly design. The integrated silicone gasket and sealant channel promote a reliable, leak-free seal, while the short-thread profile simplifies installation in tight spaces. With barbed tails for secure hose clamps and thick sidewalls for ongoing stress, it’s a dependable choice for above-water-line plumbing on your boat.
