Boat Thru-Hull Fittings
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- Seachoice®1-7/8" Hole Polypropylene Black Covered Thru-Hull Fitting for 5/8" D Hose (50-18431)1-7/8" Hole Polypropylene Black Covered Thru-Hull Fitting for 5/8" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Expertly crafted from premium materialsHigh quality at a budget-friendly price$73.75
- Seachoice®1-7/8" Hole Stainless Steel Mega-Flow Dripless Thru-Hull Fitting for 1" D Hose (50-18611)1-7/8" Hole Stainless Steel Mega-Flow Dripless Thru-Hull Fitting for 1" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...Drip collar on the face prevents hull streakingPassed side load test: max. 551 lb (250 kg)$53.86
- Seachoice®1-7/8" Hole Stainless Steel Mega-Flow Dripless Thru-Hull Fitting for 1-1/8" D Hose (50-18621)1-7/8" Hole Stainless Steel Mega-Flow Dripless Thru-Hull Fitting for 1-1/8" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Drip collar on the face prevents hull streakingPassed side load test: max. 551 lb (250 kg)$51.47
- Seachoice®1/4" Slot, 1-1/4" Flange Plastic Black Cable Thru-Hull Fitting for 3/4" Hole (17901)1/4" Slot, 1-1/4" Flange Plastic Black Cable Thru-Hull Fitting for 3/4" Hole by Seachoice®. Watertight thru hull fitting. Self attaching. No additional hardware required. This product is made of high-quality materials to serve you for...Expertly crafted from premium materialsHigh quality at a budget-friendly price$86.60
- Seachoice®1/4" Slot, 1-1/4" Flange Plastic White Cable Thru-Hull Fitting for 1" Hole (17921)1/4" Slot, 1-1/4" Flange Plastic White Cable Thru-Hull Fitting for 1" Hole by Seachoice®. Watertight thru hull fitting. Self attaching. No additional hardware required. This product is made of high-quality materials to serve you for...Expertly crafted from premium materialsHigh quality at a budget-friendly price$86.60
- Seachoice®2-3/8" Hole 90° Plastic White Elbow Thru-Hull Fitting for 1-1/8" D Hose (18101)2-3/8" Hole 90° Plastic White Elbow Thru-Hull Fitting for 1-1/8" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Expertly crafted from premium materialsHigh quality at a budget-friendly price$78.74
- Seachoice®2-3/8" Hole 90° Polypropylene Black Covered Elbow Thru-Hull Fitting for 1-1/2" D Hose (50-18581)2-3/8" Hole 90° Polypropylene Black Covered Elbow Thru-Hull Fitting for 1-1/2" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Expertly crafted from premium materialsHigh quality at a budget-friendly price$32.37
- Seachoice®2-3/8" Hole 90° Polypropylene Black Covered Elbow Thru-Hull Fitting for 1-1/4" D Hose (50-18571)2-3/8" Hole 90° Polypropylene Black Covered Elbow Thru-Hull Fitting for 1-1/4" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Expertly crafted from premium materialsHigh quality at a budget-friendly price$25.56
- Seachoice®2-3/8" Hole Polypropylene Black Covered Thru-Hull Fitting for 1-1/2" D Hose (50-18481)2-3/8" Hole Polypropylene Black Covered Thru-Hull Fitting for 1-1/2" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Expertly crafted from premium materialsHigh quality at a budget-friendly price$21.79
- Seachoice®2-3/8" Hole Polypropylene Black Covered Thru-Hull Fitting for 1-1/4" D Hose (50-18471)2-3/8" Hole Polypropylene Black Covered Thru-Hull Fitting for 1-1/4" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Expertly crafted from premium materialsHigh quality at a budget-friendly price$95.06
- Seachoice®2-3/8" Hole Stainless Steel Mega-Flow Dripless Thru-Hull Fitting for 1-1/2" D Hose (50-18631)2-3/8" Hole Stainless Steel Mega-Flow Dripless Thru-Hull Fitting for 1-1/2" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...Drip collar on the face prevents hull streakingPassed side load test: max. 551 lb (250 kg)$59.33
- Seachoice®2-7/8" Hole 90° Plastic White Elbow Thru-Hull Fitting for 1-1/2" D Hose (50-18121)2-7/8" Hole 90° Plastic White Elbow Thru-Hull Fitting for 1-1/2" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Expertly crafted from premium materialsHigh quality at a budget-friendly price$100.06
- Seachoice®2-7/8" Hole Plastic White Thru-Hull Fitting for 1-1/2" D Hose with Broad Flange (50-18111)2-7/8" Hole Plastic White Thru-Hull Fitting for 1-1/2" D Hose with Broad Flange by Seachoice®. Per ABYC "Safety Standards for Small Craft". This product is made of high-quality materials to serve you for years to come. Designed using...Expertly crafted from premium materialsHigh quality at a budget-friendly price$75.28
- Seachoice®3-1/4" Hole Polypropylene Black Covered Thru-Hull Fitting for 2" D Hose (50-18491)3-1/4" Hole Polypropylene Black Covered Thru-Hull Fitting for 2" D Hose by Seachoice®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....Expertly crafted from premium materialsHigh quality at a budget-friendly price$29.99
- Seachoice®3/4" Hole Plastic White Double-Ended Thru-Hull Fitting for 3/4" D Hose (18201)3/4" Hole Plastic White Double-Ended Thru-Hull Fitting for 3/4" D Hose by Seachoice®. Designed to provide watertight transition through tanks or bulk heads. This product is made of high-quality materials to serve you for years to come....Expertly crafted from premium materialsHigh quality at a budget-friendly price$77.32
- Seachoice®9/32" Slot, 1-1/2" Flange Plastic Black Cable Thru-Hull Fitting for 1" Hole (50-17971)9/32" Slot, 1-1/2" Flange Plastic Black Cable Thru-Hull Fitting for 1" Hole by Seachoice®. Watertight thru hull fitting. Self attaching. No additional hardware required. This product is made of high-quality materials to serve you for...Expertly crafted from premium materialsHigh quality at a budget-friendly price$24.54
- Seachoice®9/32" Slot, 1-1/2" Flange Plastic White Cable Thru-Hull Fitting for 3/4" Hole (50-17991)9/32" Slot, 1-1/2" Flange Plastic White Cable Thru-Hull Fitting for 3/4" Hole by Seachoice®. Watertight thru hull fitting. Self attaching. No additional hardware required. This product is made of high-quality materials to serve you for...Expertly crafted from premium materialsHigh quality at a budget-friendly price$24.54
- T-H Marine®1" Hole Plastic White Extended Barbed Thru-Hull Fitting for 3/4" D Hose (TH-1XL-B)1" Hole Plastic White Extended Barbed Thru-Hull Fitting for 3/4" D Hose by T-H Marine®. #1 Plastic Thru-Hull Supplier in the U.S.A. Their molded Thru-Hull fittings are used by more OEM boat builders than any other brand. All T-H Marine...Nut for Head3/4" Hose x Thread$2.40
- T-H Marine®1-3/8" Hole 90° Plastic Black Elbow Thru-Hull Fitting for 1-1/8" D Hose, Bulk (TH-1292-B)1-3/8" Hole 90° Plastic Black Elbow Thru-Hull Fitting for 1-1/8" D Hose, Bulk (TH-1292-B) by T-H Marine®. #1 Plastic Thru-Hull Supplier in the U.S.A. Their molded Thru-Hull fittings are used by more OEM boat builders than any other...One NutExpertly crafted from premium materials$3.18
- T-H Marine®1-3/8" Hole Plastic Black Thru-Hull Fitting for 1-1/8" D Hose, Bulk (TH-1200XL-B)1-3/8" Hole Plastic Black Thru-Hull Fitting for 1-1/8" D Hose, Bulk (TH-1200XL-B) by T-H Marine®. #1 Plastic Thru-Hull Supplier in the U.S.A. Their molded Thru-Hull fittings are used by more OEM boat builders than any other brand. All...№1 Plastic Thru-Hull Supplier in the U. S. AAll T-H Marine Thru-Hull Fittings are made of the highest quality virgin material to insure consistent size, extra durability and attractive appearance$4.08
- T-H Marine®1-3/8" Hole Straight Plastic White Thru-Hull Fitting for 1" D Hose, Bulk (TH-1002-B)1-3/8" Hole Straight Plastic White Thru-Hull Fitting for 1" D Hose, Bulk (TH-1002-B) by T-H Marine®. #1 Plastic Thru-Hull Supplier in the U.S.A. Their molded Thru-Hull fittings are used by more OEM boat builders than any other brand....Expertly crafted from premium materialsHigh quality at a budget-friendly price$3.65
- Johnson Pump®1-1/8" White Plastic Thru-Hull Fitting (75125)1-1/8" White Plastic Thru-Hull Fitting by Johnson Pump®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...Expertly crafted from premium materialsHigh quality at a budget-friendly price$10.03
- Johnson Pump®KlickTite 3/4" Hole Plastic Black Thru-Hull Fitting for 3/4" D Hose (946958)KlickTite 3/4" Hole Plastic Black Thru-Hull Fitting for 3/4" D Hose by Johnson Pump®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....Expertly crafted from premium materialsHigh quality at a budget-friendly price$9.80
- Johnson Pump®Plastic Black Bulkhead Fitting for 3/4" D Hose (09-10616)Plastic Black Bulkhead Fitting for 3/4" D Hose by Johnson Pump®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Expertly crafted from premium materialsHigh quality at a budget-friendly price$30.38
- Whitecap®1-1/8" Hole Stainless Steel Thru-Hull Fitting for 5/8" D Hose (6540)1-1/8" Hole Stainless Steel Thru-Hull Fitting for 5/8" D Hose by Whitecap®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Expertly crafted from premium materialsHigh quality at a budget-friendly price$23.63
- Whitecap®2" Hole Stainless Steel Thru-Hull Fitting for 1-1/2" D Hose (6545)2" Hole Stainless Steel Thru-Hull Fitting for 1-1/2" D Hose by Whitecap®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet...Expertly crafted from premium materialsHigh quality at a budget-friendly price$38.63
- Buck Algonquin®2" Hole Stainless Steel Thru-Hull Fitting for 1-1/8" D Hose (70THH112)2" Hole Stainless Steel Thru-Hull Fitting for 1-1/8" D Hose by Buck Algonquin®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Expertly crafted from premium materialsHigh quality at a budget-friendly price$44.78
Most boats have different systems using special openings in the hull for their operation, both above and below the waterline. These include engine cooling, water ballast, plumbing, and some other systems, and each of them has to be installed properly and inspected regularly in order to avoid dangerous leaks. Particularly, thru-hull fittings and seacocks require careful attention, especially those installed under the water. It's not recommended to use nylon or even brass fittings in such places, while those made of bronze or some specific composite materials are approved by ABYC and meet strict requirements concerning tensile strength, corrosion resistance, etc.
As for boat thru-hull fittings installed above the waterline, the requirements are somewhat lower, but it doesn't mean they can be omitted. In each case, your fittings should be of high quality and have an appropriate design and diameter. A wide range of such products is offered on our virtual shelves. You can choose from straight and elbow fittings made from different materials and having threaded or barbed ends to connect a valve, pipe, or hose. Sourced from reputable brands such as Groco or T-H Marine, they offer high quality and perfect tightness.