T-H Marine 90° Thru-Hull Fitting – 1-1/8" Barb, Threaded, Overflow Drain
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Clean 90° Overflow Routing Through the Hull
This threaded 90-degree thru-hull fitting is designed for use with a 1-1/8" screw-in overflow drain tube, making it the right choice when you need to route livewell or baitwell overflow water out through the hull at a right angle. The 90° elbow keeps your plumbing low-profile and directed, while the threaded design locks the overflow tube securely in place.
A straightforward, reliable fitting for new livewell builds or replacing a damaged thru-hull in an existing system.
Key Features
- 90° elbow design — routes overflow drain tubing at a right angle for clean, low-profile hull exits
- Threaded fitting — accepts a 1-1/8" screw-in overflow drain tube for a secure, leak-resistant connection
- 1-1/8" barb — standard sizing compatible with common livewell and baitwell overflow hose
- Lightweight and compact — minimal footprint inside the hull
Installation Notes
- Designed for use with a 1-1/8" screw-in overflow drain tube
- Threaded connection — thread the overflow tube directly into the fitting body
- Mount through the hull at your desired overflow exit point; seal with appropriate marine sealant
Best For
Livewell and baitwell overflow drain installations where the drain tube needs to exit the hull at a 90° angle — common in bass boats, walleye boats, and other fishing vessels with limited space between the livewell and the hull skin. Ideal for new builds and direct replacement of existing 90° thru-hull fittings of the same size.
Parts Desk Insights
This fitting is the right call when a customer is routing a livewell overflow drain and needs a 90° exit angle through the hull — most commonly in tight-space installations on bass boats. Confirm the customer is using a 1-1/8" screw-in overflow tube before selling; if they have a straight run with no angle needed, they may need a standard straight thru-hull instead. Also confirm they have appropriate marine sealant for the installation. A common replacement part when the original fitting cracks or the threads strip.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.