When you're working on a boat's drainage or bilge pump, a thru-hull fitting is the part that carries water through the hull. The tricky part is that these fittings come in different styles: straight and 90-degree, and they're sized for different hose diameters. The four listings here range from $10.24 to $26.99, so your choice will likely come down to the angle you need, the hose size, and the price you're willing to pay.
Quick Take
The thru Hull Fitting Boat Plumbing Fittings Easy to Install Premium Hose Connector is the lowest-priced listing at $10.24. It's a plastic connector that fits 1-1/4-inch openings and has an adjustable length. The Injection Molded 1/2-Inch Thru-Hull Fittings - Easy Install for Boat Plumbing is the most expensive at $26.99 and is built for 1/2-inch hose connections. For 3/4-inch 90-degree jobs, the Boat Plumbing 3/4 Inch 90 Degree Thru Hull Fitting Connector Black costs $22.99, while the BuleVina 90 Degree Thru Hull Connector Fitting 3/4 inch Boat Plumbing Black costs $20.99.
Listed Price Comparison
| Product | Listed Price | Price Bar | Key Detail |
|---|---|---|---|
| thru Hull Fitting Boat Plumbing Fittings Easy to Install Premium Hose Connector | USD 10.24 | Plastic, fits 1-1/4-inch openings, adjustable length | |
| Injection Molded 1/2-Inch Thru-Hull Fittings - Easy Install for Boat Plumbing | USD 26.99 | 1/2-inch hose, injection molded, made in USA | |
| Boat Plumbing 3/4 Inch 90 Degree Thru Hull Fitting Connector Black | USD 22.99 | 90-degree, 3/4-inch, PVC | |
| BuleVina 90 Degree Thru Hull Connector Fitting 3/4 inch Boat Plumbing Black | USD 20.99 | 90-degree, 3/4-inch, PVC |
The listed prices span a $16.75 range. If you're between the two 90-degree fittings, the BuleVina is $2 lower than the Boat Plumbing version. If you're comparing a straight fitting against a 90-degree fitting, decide on the angle first, then choose by size and price.
Decision Matrix
- Need a low-priced fitting with an adjustable length? Pick the thru Hull Fitting Boat Plumbing Fittings at $10.24.
- Need a straight 1/2-inch bilge-pump fitting and a US-made part? Go with the Injection Molded 1/2-Inch Thru-Hull Fittings at $26.99.
- Need a 3/4-inch 90-degree connector at a lower listed price? Choose the BuleVina 90 Degree Thru Hull Connector Fitting at $20.99.
- Prefer a 3/4-inch 90-degree connector and don't mind paying $2 more? The Boat Plumbing 3/4 Inch 90 Degree Thru Hull Fitting Connector Black is the alternative.
Product Notes
thru Hull Fitting Boat Plumbing Fittings Easy to Install Premium Hose Connector - USD 10.24
This is the least expensive listing in the group, and it's a plastic connector designed for 1-1/4-inch openings. The description says the length can be adjusted from 2 inches to 4-1/2 inches, which gives you some flexibility if your hull thickness varies. Assembly is described as hand installation with threaded nuts, so you don't necessarily need specialized tools. The catch: the color is listed as Black S rather than a plain black, and the material is plastic, so it may not feel as hefty as the injection-molded option. If you're on a tight budget and need a basic thru-hull connector, this one keeps the cost low.
Injection Molded 1/2-Inch Thru-Hull Fittings - Easy Install for Boat Plumbing - USD 26.99
This fitting is the top-priced listing, and it's aimed at 1/2-inch hose connections. The listing highlights injection molding and a straight thru-hull bilge pump fitting, and it's the only one of the four with a United States country of origin. The included component is a white straight fitting, which makes it easy to identify in a parts bin. The limitation is the price: it's the highest of the set, and the fixed 1/2-inch size means it won't replace a 3/4-inch fitting. If you need a straight 1/2-inch part and want a US-made option, this is the one to look at.
Boat Plumbing 3/4 Inch 90 Degree Thru Hull Fitting Connector Black - USD 22.99
This 90-degree connector is made from PVC and is designed for 3/4-inch bilge-pump drains. The description calls out use as a deck floor drain or vent port, so it's a straightforward part for those jobs. It's also listed as suitable for boats, yachts, trucks, tractors, and more, which gives it a multi-vehicle appeal. The price sits at $22.99, which is $2 above the other 90-degree option in this group. For shoppers who want a black PVC 90-degree fitting, this is a solid choice, though the lower-priced BuleVina is nearly identical.
BuleVina 90 Degree Thru Hull Connector Fitting 3/4 inch Boat Plumbing Black - USD 20.99
This branded connector is the lower-priced 90-degree option, with a listed price of $20.99. It's also made from PVC and works with 3/4-inch bilge-pump fittings, and the description mentions the same broad fitment across boats, yachts, trucks, and tractors. The gap between this and the other 90-degree fitting is just $2, so the decision may come down to the BuleVina name versus the generic listing. The limitation is that it's fixed at 3/4 inch, so it won't suit the 1/2-inch plumbing of the Injection Molded fitting.
Final Recommendation by Use Case
If you need a straight 1/2-inch fitting and prefer a US-made product, the Injection Molded 1/2-Inch Thru-Hull Fittings is the clear pick. If you're installing a 3/4-inch 90-degree drain, the BuleVina connector gives you the lower listed price between the two 90-degree models. And if your priority is the minimum spend, the thru Hull Fitting Boat Plumbing Fittings at $10.24 is the lowest-priced way to get a thru-hull connector that can be adjusted for hull thickness.
