Seachoice 17991 Watertight Cable Thru-Hull Fitting | White | 9/32" Slot | 1-1/2" Flange
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Seachoice 17991 Watertight Cable Thru-Hull Fitting
The Seachoice 17991 combines the wider 9/32" slot of the larger thru-hull range with a white finish that blends cleanly into white gelcoat hulls and topsides. It's the right choice when you need more clearance than the standard 1/4" models offer — for heavier gauge wiring, dual cables, or cables with moulded connectors or protective sleeves — and you want the installation to look factory-finished on a white hull. Self-attaching with no additional hardware required, it seals watertight against hulls up to 2" thick and accepts single or double cables through its 1-1/2" flange.
Key Features
- Watertight seal — keeps moisture out at the cable entry point
- Self-attaching design — no additional hardware required
- 9/32" slot — wider than standard 1/4" models for larger cables or connectors
- 1-1/2" flange for a secure, finished surface seal
- 2" maximum hull thickness
- Accepts single or double cables
- White finish — blends with white gelcoat hulls and topsides
Compatible Applications
- Routing heavier gauge power cables or dual cables through a white hull
- Transducer, antenna, or sensor cables with larger connectors or protective sleeves
- Bilge pump wiring and through-hull electrical runs requiring extra clearance
- Any single or double cable requiring a watertight hull or bulkhead penetration up to 2" thick
- Powerboats, sailboats, and trailered vessels with white hulls or topsides
Parts Desk Insights
The 17991 is the fitting we recommend when a customer needs the wider 9/32" slot but has a white hull and wants a colour-matched result. It's the white counterpart to the Seachoice 17971 (9/32" Slot, Black) — same dimensions, different finish. If the cable is standard gauge and will fit through a 1/4" slot, the Seachoice 17921 (1/4" Slot, White) is a slightly lower-cost option. Browse the complete range in our Switches & Circuit Protection collection.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.