Sea-Dog 321476 Gas Filled Lift Spring
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Sea-Dog 321476 Gas Filled Lift Spring is a marine-grade lift support designed to help raise and hold hatches, deck access ports, or other equipment in a controlled position. It features Sea-Dog’s multi-lobe seal for improved service life, along with heavy-duty construction materials for corrosion resistance.
Key Features
- Gas-filled lift spring for controlled lifting support
- Unique multi-lobe seal for superior service life and performance
- Heavy gauge steel body
- Hard chromium plated shafts
- Bronze bushings and polymer end fittings
Intended Use
- Marine deck hatches and access ports (lift support)
- Marine engine/access hatches
- General marine cabinet/door lifting applications
- Utility/utility-box or equipment lift applications
Product Details
- Product: Sea-Dog 321476 Gas Filled Lift Spring
- SKU: 354-3214761
- Type: Gas filled lift spring
- Construction highlights: heavy gauge steel body; hard chromium plated shafts; bronze bushings; polymer end fittings
- Sea-Dog design feature: unique multi-lobe seal
- Lift weight (Sea-Dog listing for part 321476-1): 60 lbs
- Key dimensions (Sea-Dog listing for 321476-1): 17 in overall length; 11 in (measured value listed as B); 6-3/4 in (measured value listed as C); 15 mm and 6 mm (listed end dimensions); includes 1 ea (standard pack count)
Parts Desk Insights
Best Use Case: Use this gas lift spring when you need consistent hatch/door support for access ports—especially where you want dependable hold-up with marine-appropriate materials.
Common Issues: If lift force feels weak or the hatch won’t hold, confirm the spring is matched to the hatch weight/geometry and that the mounting points align correctly. Also inspect the seal area and end fittings during service to ensure the spring is seated and not binding.
Related Products & Accessories
- Sea-Dog Gas Filled Lift Spring (family selector) - Browse the lift spring and hatch hardware category to match the correct lift force and dimensions for your hatch/door.
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.