Sea-Dog 3361651 Quarter-Turn Deck Plate, Smooth, 6-1/2" – Black
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sea-Dog 3361651 Quarter-Turn Deck Plate, Smooth, 6-1/2" – Black
Fast, tool-free deck access with a quarter-turn locking mechanism — open or close this plate with a simple 90-degree twist. The Sea-Dog 3361651 is the larger sibling to the 3361551, offering a 6-1/2" opening for easier access to deeper or wider compartments. Built from injection-molded ABS/polycarbonate, it is UV-stabilized for long-term durability in harsh marine environments. A specially engineered lubricated gasket combined with a knife-edge seal delivers a leak-tested watertight closure every time.
Key Features
- Quarter-turn locking system — opens and closes with a 90-degree twist; built-in stops prevent over-tightening, jamming, and cross-threading
- Lubricated gasket with knife-edge seal — leak-tested design provides a reliable watertight closure
- 6-1/2" opening — larger diameter for easier access to wider or deeper compartments
- Smooth center surface — clean, low-profile finish; comfortable underfoot
- Injection-molded ABS/polycarbonate construction — impact-resistant and UV-stabilized for long-term durability
- Black finish — blends with dark deck surfaces and non-skid coatings
- Dimensions: A: 6-1/2" | B: 8-1/8" | C: 6-1/2" | D: 7-3/8"
Note: Avoid contact with acetone or strong solvents.
Parts Desk Insights
Best use case: Choose the 3361651 over the smaller Sea-Dog 3361551 (5-1/2") when you need more room to reach into the compartment — wider gear storage, larger bilge access panels, or any application where a 5-1/2" opening feels restrictive. The quarter-turn mechanism remains the fastest-opening design in the Sea-Dog lineup, making it ideal for frequently accessed compartments like tackle storage, safety gear lockers, and live well access. If you prefer a screw-out style at a similar size, see the Sea-Dog 6" Screw-Out Deck Plate – White.
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.