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Attwood Marine SL1-40-5 Gas Spring 10" Extended 7" Compressed 40 lbs Blade Style

Manufacturer

Attwood Marine

<h3>About Attwood Marine</h3><p><strong>Attwood Marine</strong> has been a cornerstone of the boating world for well over a century. <a href="/7239-attwood-marine">Founded in 1893</a>, the company began by manufacturing precision underwater hardware and on-deck fittings — rudders, struts, cleats, and lights — and quickly earned a reputation for fine engineering and enduring quality. After World War I, the brand's craftsmanship was so well regarded that legendary boatbuilder Chris-Craft turned to Attwood for brass fittings on their iconic pleasure boats.</p><p>Today, Attwood operates as part of the Navico Group by Brunswick, a global family of industry-leading marine companies, yet it has never lost the boater-first focus that built its name. What distinguishes Attwood from many competitors is their end-to-end philosophy: they design, manufacture, test, and distribute their own products rather than simply sourcing components from third parties. Every item in the Attwood catalog is rigorously tested to meet or exceed U.S. Coast Guard (USCG), American Boat and Yacht Council (ABYC), and CE standards — giving boaters and OEM manufacturers alike the confidence to rely on Attwood gear season after season.</p><h3>A Complete Marine Accessories Ecosystem</h3><p>Attwood's catalog spans an impressively broad range of marine needs. On the comfort and ergonomics side, their <a href="/7239-attwood-marine-seat-pedestal-packages-200926">Seat &amp; Pedestal Packages</a> deliver complete, ready-to-install seating system solutions backed by decades of engineering refinement. For boaters who prefer to build or customize their setup, Attwood's Fixed Mount Pedestals provide a sturdy, reliable foundation engineered for lasting stability on the water.</p><p>When it comes to protecting your hull at the dock, Attwood's <a href="/7239-attwood-marine-fenders-200396">Fenders</a> offer dependable, marine-grade cushioning against docks, pilings, and other vessels — an often-overlooked but essential piece of gear for every boat owner. Getting on and off the boat safely is equally important, and Attwood's <a href="/200179-boarding-ladders-attwood-marine-7239">Boarding Ladders</a> are designed with heavy-duty construction, rated hardware, and user-friendly features to make every entry and exit as secure as possible.</p><p>Beyond these categories, Attwood is also widely recognized for its bilge and aerator pumps, navigation lighting, fuel systems, rod holders, and trailering accessories — making the brand a true one-stop resource for outfitting or refreshing virtually any powerboat, fishing boat, or recreational vessel.</p><h3>Why Boaters Choose Attwood</h3><ul style="list-style:disc"><li><strong>100+ Years of Proven Experience</strong> — A heritage of quality engineering stretching back to 1893.</li><li><strong>Multi-Standard Compliance</strong> — Products tested to USCG, ABYC, and CE standards for safety and performance.</li><li><strong>OEM-Trusted</strong> — A leading supplier to major boat manufacturers across a wide range of product categories.</li><li><strong>Corrosion-Resistant Materials</strong> — Extensive use of 304 and 316 stainless steel, chrome-plated zinc, and marine-grade synthetics built for harsh saltwater environments.</li><li><strong>In-House Engineering</strong> — Advanced prototyping, simulation, and real-world testing ensure reliability before any product reaches the water.</li></ul>

Part Number

SL1-40-5
09/14/2036 4:16 AM
Sale Price

$20.22

2 left at this price

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Attwood SL1-40-5 is a premium marine-grade gas spring designed specifically for harsh saltwater environments. This blade-style gas spring extends to 10 inches and compresses to 7 inches, providing 40 pounds of lifting force for hatches, lids, engine covers, and access panels on boats and marine applications.

Key Features:

  • 10-inch extended length, 7-inch compressed length
  • 40 lb. lifting force for reliable support
  • Blade-style end fittings for secure mounting
  • Filled with bio-degradable, water-safe grade oil (WGK) - environmentally friendly for marine use
  • Exceeds ASTM B117 salt spray corrosion resistance testing
  • Proven 30,000 cycle lifecycle durability
  • Corrosion-resistant construction for long-lasting performance in saltwater environments

Attwood's SL series gas springs are among the most popular replacement gas springs in the marine industry, trusted by boaters and marine professionals for their superior corrosion resistance and environmental safety. The use of non-hazardous, water-safe oil ensures that even in the event of a seal failure, there is no harm to the marine environment.

Products specifications

Approximate Stroke

3"

Compressed Measurement

7"

Cylinder Size

18mm

Description

8 x 18 - 8MM ROD x 18MM CYLINDER

Diameter: Rod

8mm

Good

Quick and easy to buy, let&rsquo;s see how quick it ships

Very simple to place an order

good

All went well

Great!

Perfect

Took exactly a month to get here. But it's here and it was the best price by far and the right product.

Quick Service and great pricing!

Hard to find part for a great price.

Best price I found on a web..was in stock and received on time within the week..

awesome

Great

Fun enjoyable easy and quick shipping

Shipped and received quickly, good communication on question I had

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