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Sea-Dog Line 4203851 Poly 4-Position Magneto Style Marine Ignition Key Switch

Manufacturer

Sea-Dog Line

<p>For over a century, Sea-Dog Line has stood as a cornerstone of the marine hardware industry, delivering innovative solutions that meet the demanding needs of recreational and commercial boaters. Founded in the early 1920s by entrepreneur Hans "Action" Broson Sneve, the company began with a unique sales approach—showcasing marine hardware aboard a 55-foot cruiser that sailed from Alaska to Mexico. This hands-on philosophy continues to shape Sea-Dog's commitment to producing hardware that performs reliably in the harshest saltwater environments.</p><h3>Industry-Leading Marine Hardware Manufacturing</h3><p>Based in Everett, Washington, Sea-Dog Corporation operates a 75,000-square-foot warehouse stocking over 8 million parts and runs an injection molding facility with 16 machines producing more than 17 million components annually. The company's extensive product line spans anchoring systems, deck hardware, electrical components, plumbing fittings, and lighting solutions—all engineered with marine-grade materials like stainless steel, brass, and UV-resistant polymers. Sea-Dog's recognition as a multiple-time NMDA Supplier of the Year underscores the brand's excellence in both product quality and customer service, while their on-staff ABYC-certified marine technician provides invaluable installation and technical support.</p><h3>Premium Marine Components for Every Vessel</h3><p>Sea-Dog's <a href="/7549-sea-dog-line-windshield-washers-wipers-replacement-motors-201195">windshield washers, wipers, and replacement motors</a> deliver crystal-clear visibility during inclement weather, with both manual and electric options featuring corrosion-resistant stainless steel arms and UV-stable blades designed specifically for marine windshield applications. Their <a href="/7549-sea-dog-line-electric-horns-200351">electric horns</a> include the popular MaxBlast line, which passed rigorous 600-hour salt spray testing while meeting US Coast Guard COLREGS and ABYC standards for audible warning devices. For fuel and water system integrity, Sea-Dog's <a href="/7549-sea-dog-line-deck-fills-200307">deck fills</a> provide secure, leak-free access points constructed from durable stainless steel with snap-in designs that resist corrosion in saltwater environments.</p><p>When maneuvering in low-light conditions, Sea-Dog's <a href="/7549-sea-dog-line-docking-lights-200335">docking lights</a> offer bright LED illumination with minimal power draw, featuring injection-molded housings that withstand impacts and temperature extremes. Proper airflow is essential for preventing moisture buildup below deck, and Sea-Dog's <a href="/7549-sea-dog-line-hose-and-cowl-vents-200534">hose and cowl vents</a> deliver reliable ventilation with low-profile designs that include snap-in deck plates for bilge applications or dorade box compatibility for cabin use. Each product reflects Sea-Dog's century-long dedication to manufacturing hardware that recreational and professional mariners can trust, voyage after voyage.</p>

Part Number

4203851
06/14/2036 3:41 AM
Sale Price

$17.00

In Stock (6)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Sea-Dog Line 4203851 is a four-position magneto style ignition switch designed for marine applications. Constructed from durable polypropylene, this key switch provides reliable control for accessory, off, ignition, start, and choke functions.

Key Features:

  • Four position operation: Accessory-Off-Ignition-Start with push-to-choke function
  • Durable polypropylene construction for corrosion resistance in marine environments
  • 13/16" diameter short shaft fits panels up to 5/8" thick
  • Seven screw terminals or six screw plus one boss terminal electrical connection
  • Includes two keys for convenience

Electrical Specifications:

  • Ignition: 15A @ 12 VDC
  • Solenoid: 30A @ 12 VDC
  • Choke: 7A @ 12 VDC
  • Accessory: 15A @ 12 VDC

This ignition switch is ideal for boats, marine engines, and other 12-volt marine electrical systems requiring reliable start and accessory control.

pimp great

Great experience, fast and easy.

X

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excellent

Shopping was easy. Shipping was fast the product quality was only issue but the problem was stuff I fixed.

straight foreward searching and checkout

New looking forward to success with new part...

Good

had the part I needed in stock. good price. shipping was a little high.

Hard to find these filters, so big thanks.

Good product at the right price. Didn't have the same vehicle fitment as the manufacturer did.

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