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Sea-Dog Line 420108-1 SPDT Toggle Switch On/Off/On 15A 12V Marine

Manufacturer

Sea-Dog Line

<h3>About Sea-Dog Line</h3><p>Few names in the marine industry carry as much history as <strong>Sea-Dog Line</strong>. Founded in 1923 and headquartered in Everett, Washington, Sea-Dog has spent over a century engineering and supplying dependable hardware for boaters, riggers, and marine professionals. Whether you are outfitting a small fishing boat or a serious offshore vessel, Sea-Dog's expansive catalog — spanning more than 2,400 products — is built around one principle: hardware that holds up when it matters most.</p><h3>A Century of Marine Innovation</h3><p>Sea-Dog Line began as a focused marine rigging and hardware supplier, and over the decades grew into one of the most comprehensive sources for anchoring, docking, boarding, and boat-management equipment in the industry. Their product line has expanded to include antenna accessories, trailer hardware, boat hooks, cabinet and hatch fittings, chain and rigging components, and a wide range of electrical accessories — all engineered to withstand the corrosive, high-stress environment of the marine world.</p><p>What sets Sea-Dog apart is a commitment to manufacturing quality that boat owners can rely on season after season. Their hardware is designed for real-world marine use, meaning saltwater resistance, UV stability, and structural durability are never afterthoughts.</p><h3>Marine Visibility & Windshield Systems</h3><p>One of Sea-Dog's highest-demand product areas is their line of <a href="/7549-sea-dog-line-windshield-washers-wipers-replacement-motors-201195">Windshield Washers, Wipers &amp; Replacement Motors</a>. Maintaining clear visibility on the water is a safety-critical function, and Sea-Dog supplies a broad assortment of wiper blades, washer systems, and complete replacement assemblies designed to fit a wide variety of marine windshield configurations. For boaters who need a direct drive solution, Sea-Dog's dedicated <a href="/7549-sea-dog-line-windshield-wiper-motor-8824">Windshield Wiper Motors</a> offer reliable performance in wet, high-vibration marine environments — a category where component quality directly affects on-water safety.</p><h3>Cockpit Comfort & Functionality</h3><p>Beyond hardware and visibility systems, Sea-Dog also brings practical innovation to the helm and cockpit with their <a href="/7549-sea-dog-line-cockpit-fillet-tables-200274">Cockpit &amp; Fillet Tables</a>. These tables are designed to maximize usable space aboard, whether you are prepping a catch, serving guests, or simply organizing gear. Sea-Dog's tables reflect the same build philosophy as all their hardware: functional, durable, and thoughtfully designed for the marine setting.</p><h3>Why Boaters Trust Sea-Dog Line</h3><ul style="list-style:disc"><li>Over 100 years of marine hardware expertise dating back to 1923</li><li>Headquarters in Everett, Washington, with a deep understanding of Pacific Northwest and offshore boating demands</li><li>A catalog of more than 2,400 products spanning virtually every marine hardware category</li><li>Products engineered for saltwater, UV exposure, and the vibration of on-water use</li><li>Trusted by recreational boaters, commercial operators, and marine riggers alike</li></ul><p>From rigging essentials to cockpit accessories and windshield systems, Sea-Dog Line remains one of the most complete and dependable marine hardware brands available today. Explore their full product range and find the right Sea-Dog components for your vessel.</p>

Part Number

420108-1
09/15/2036 9:27 PM
Sale Price

$6.76

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sea-Dog Line 420108-1 is a water-resistant SPDT (Single Pole Double Throw) toggle switch designed for marine and automotive applications. This heavy-duty switch provides On/Off/On functionality, allowing you to control two separate circuits from a single switching position.

Key Features:

  • SPDT (Single Pole Double Throw) configuration with On/Off/On operation
  • Water-resistant construction with locking ring and lever seal
  • Durable stamped brass contacts for reliable conductivity
  • Injection molded nylon and polycarbonate housing for corrosion resistance
  • Protruding cap nut for easy operation
  • Rated 15 amps at 12V DC
  • Easy installation for panel mounting applications

Ideal for marine electrical systems, RVs, off-road vehicles, and other 12-volt DC applications where reliable switching and moisture protection are essential. The robust construction ensures long-lasting performance in demanding environments.

Products specifications

Package

Retail

Positions

On/Off/On

Terminals

3 Blade

Type

SPDT

First of all, I can not believe how fast I recieved my order, 2 DAYS! Best of all, the instructions made it easy for a non mechanic like me to install.

Easy to use

I hope the part fits my car

good

Great pricing ! Items in stock !! Thank you

Great prices and fast shipping!

Quick and easy

AWesome service. questions answered immediately via chat and order was en route via fed ex within 6 hours!!!!!!

Best products at the best prices

I was a bit skeptical about your website since I've never purchased from you before, but your customer service representative was great at answering my questions. Thanks.

Very easy to talk to on the phone and excellent service.

Great Price - Shipped the following day - Very please

thanks, didn't know these are rare

Not pleased when I got an error when paying with credit card.

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