My Account
Shopping Cart

Sea-Dog Line 420375-1 Poly 4-Position Key Switch with Choke

Manufacturer

Sea-Dog Line

<h3>About Sea-Dog Line</h3><p>Few names in the marine hardware world carry the same weight as <strong>Sea-Dog Line</strong>. Rooted in the early 1920s and headquartered in Everett, Washington, the company traces its origins to a uniquely inventive sales strategy: its founder, Hans &ldquo;Action&rdquo; Broson Sneve, showcased marine hardware by sailing his wares up and down the Pacific Coast aboard the M.V. Sea-Dog &mdash; a 55-foot cruiser that became the brand&rsquo;s namesake. That spirit of hands-on, on-the-water ingenuity has defined Sea-Dog ever since.</p><p>Today, Sea-Dog Line operates as the Sea-Dog Corporation, a third-generation family business that has expanded from a regional Pacific Coast distributor into a nationally recognized supplier of marine, industrial, and rigging hardware. The company serves everyone from professional shipbuilders to weekend boaters, earning repeat recognition from the National Marine Distributors Association for its supply chain standards and product quality.</p><h3>What Sea-Dog Line Makes</h3><p>Sea-Dog&rsquo;s catalog is remarkably broad. At its core, the brand specializes in providing hardware that must hold up in some of the harshest environments on earth &mdash; saltwater, UV radiation, temperature swings, and constant vibration. To meet those demands, Sea-Dog builds its products from marine-grade materials including 304 and 316 stainless steel, investment-cast bronze, chrome-plated brass, and UV-resistant injection-molded polymers.</p><p>The product lineup spans anchoring and docking hardware, deck fittings, cabin and hatch hardware, chain and rigging components, electrical panels, lighting, plumbing fittings, ventilation equipment, boat hooks, rod holders, and much more. Whether you&rsquo;re outfitting a new build or replacing a worn component, Sea-Dog likely has the part you need.</p><p>Among Sea-Dog&rsquo;s most well-regarded marine electrical and windshield products is their comprehensive lineup of <a href="/7549-sea-dog-line-windshield-wiper-motor-8824">Windshield Wiper Motors</a>. Engineered specifically for the marine environment, these motors feature corrosion-resistant aluminum and stainless steel construction, adjustable sweep angles, and a &ldquo;coast-to-park&rdquo; function that automatically returns the blade to its set position when power is cut &mdash; exactly the kind of thoughtful design detail that sets Sea-Dog apart from generic alternatives.</p><h3>Why Boaters Trust Sea-Dog Line</h3><p>Sea-Dog&rsquo;s longevity in the marine hardware market is no accident. The brand has built its reputation on producing components that align with ABYC (American Boat and Yacht Council) standards, giving boat builders and DIY installers confidence that each part meets recognized safety benchmarks. Products are designed for both recreational and commercial applications, meaning whether you&rsquo;re a weekend angler or a working captain, Sea-Dog hardware is built for your level of use.</p><p>With over a century in the marine industry, an ever-expanding product catalog, and a family-run culture that keeps quality at the forefront, Sea-Dog Line remains one of the most trusted names on the water. Browse the full Sea-Dog lineup to find the right hardware for your vessel.</p>

Part Number

420375-1
09/12/2036 7:42 AM
Sale Price

$21.34

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sea-Dog Line 420375-1 is a rugged four-position ignition switch designed for marine applications. Constructed of corrosion-resistant polypropylene, this key switch is built to withstand harsh saltwater environments while providing reliable engine control.

Key Features:

  • Four position functionality: Accessory, Off, Ignition, and Start
  • Durable polypropylene construction resists corrosion and UV damage
  • 13/16 inch diameter long shaft accommodates panel thickness up to 1-1/8 inches
  • Available in both four screw terminal and four blade terminal electrical configurations
  • Ignition circuit rated at 15 amps at 12V DC
  • Integrated choke function for cold engine starting

This ignition switch is ideal for boats, personal watercraft, and other marine vessels requiring a reliable key-operated starting system. The long shaft design allows for installation on thicker helm panels, while the multiple terminal configurations provide flexibility for various wiring setups.

Products specifications

Boot

Yes

Panel

1-1/8" Max

Terminals

4 Screw

Great price, good site. Ordered a Thule 956 Parkway. Came in a reasonable amount of time. Order 54#230

Great product. Friendly knowledge based people. Fast shipping. Will order from them again.

Easy, quick, convenient. What else could i ask for? Nothing! Thanks guys.

Will use Autoplicity in the future. Just dont fully belive the 24hour shipping. I ordered 2 parts that where listed as in stock and it still took 3 days to ship. When I called customer service about my order agents where rude and stated there shipping is based upon 24 "buisness" hours.

Great prices and great website.

Very easy to navigate website. I recived my order quick and it was also the cheapest online.

Great prices on a great product. Easy to navigate website! will be using them in the future for any additional parts I may need!

Easy to use

Good so far

Awesome service, Great price, Fast shipping.

Excellent price and received the product the next day.

Had great price on carburator and shipped quickly. Only whished they had sent shipping information sooner.

The item I ordered was in stock and was shipped within 24 hours. The purchase process was quick and convenient. The website was easy to navigate. Their prices were the best I could find anywhere. I will definitely purchase from them again in the future. I am pleased with Autoplicity!

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy