Sea-Dog
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Sea Dog Line Seadog Safety Kill Switch - Universal 420488-1
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Sea Dog Line Seadog Safety Kill Switch - Universal 420488-1
Replace lanyard if worn, cut or frayed. Dual circuitry allows kill switch to be wired for either ignition kill or magneto kill depending on the application.
Sea Dog Line Seadog Safety Kill Switch - Universal 420488-1
Item #: 2147854

Sea Dog Line Seadog Safety Kill Switch - Universal 420488-1

Item #: 2147854

SHP 41

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Replace lanyard if worn, cut or frayed. Dual circuitry allows kill switch to be wired for either ignition kill or magneto kill depending on the application.
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What Stands Out

Safety Enhancement
The Sea Dog Kill Switch provides vital safety for boaters, ensuring that the engine stops instantly in emergencies, preventing accidents and enhancing overall on-water safety.
Durable Construction
Constructed with high-quality materials, this kill switch is built to withstand harsh marine environments, ensuring long-lasting reliability and performance for avid boat enthusiasts.
User-Friendly Design
Designed for easy installation and use, the Sea Dog Kill Switch comes with a convenient lanyard, allowing effortless activation and ensuring operators can swiftly respond to any boating situation.

Product Details

Shop Sea Dog Line - 3004.4272 Stamped Brass/Injection molded nylon and delrin kill switch on Ubuy Saint Helena. Dual circuitry, ignition kill or magneto kill. Test switch for proper function. Buy now!
  • Stamped Brass/Injection molded nylon and delrin construction
  • Universal kill style with dual circuitry
  • Can be wired for ignition kill or magneto kill as per application
  • Replace lanyard if worn, cut, or frayed
  • 7/16 x 5/8 size, with a maximum 5 amp capacity
  • Warning: Test switch for proper function before each use

Who Should Buy?

Suitable For
  • Boat Owners

    Ideal for boat owners wanting enhanced safety features to prevent accidents while operating their vessels.

  • Marine Enthusiasts

    Great for recreational boaters looking for reliable equipment to ensure peace of mind during outings on the water.

  • Safety-Conscious Users

    Recommended for individuals prioritizing safety, as it effectively prevents boat operation when the operator is away from controls.

Not Suitable For
  • Casual Paddlers

    Not suitable for users operating small non-motorized craft like kayaks or canoes that don't require kill switches.

Product Description

Sea Dog Line Seadog Safety Kill Switch - Universal 420488-1

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the purpose of the Sea Dog 420488-1 Kill Switch with Lanyard?

    Answer: The Sea Dog 420488-1 Kill Switch is a safety mechanism designed for marine use, primarily to prevent accidents or incidents while operating boats. When activated, the kill switch can instantly shut down the engine, ensuring that if the operator falls overboard or is incapacitated, the boat does not continue to operate unsafely. This feature is crucial for enhancing safety on the water, particularly during high-speed activities or rough conditions.
  • Question: How does the lanyard function with the Kill Switch?

    Answer: The lanyard connects the operator to the kill switch, ensuring that if the operator is thrown from the boat, the lanyard pulls on the switch and kills the engine. This mechanism enhances safety, allowing for quick action in emergencies. Properly securing the lanyard to the operator is essential, and it effectively creates a direct link that contributes to maritime safety. It’s particularly useful when engaging in boating activities with multiple people on board.
  • Question: Is the Sea Dog Kill Switch compatible with all boat engines?

    Answer: The Sea Dog Kill Switch is designed to be versatile and can be compatible with most outboard and inboard boat engines. However, compatibility may vary depending on the specific engine type and manufacturer's guidelines. It's advisable to confirm that your boat's engine system supports this safety feature before purchase. This ensures that you get the most out of the kill switch in various boating scenarios, enhancing overall safety.
  • Question: What materials are used in the construction of the Sea Dog Kill Switch?

    Answer: The Sea Dog 420488-1 Kill Switch is built using high-quality materials that are resistant to marine conditions, including corrosion and wear from saltwater exposure. This durability ensures long-term performance and reliability, which is crucial for boat safety equipment. By investing in a sturdy product, boaters can enjoy peace of mind knowing they have a reliable safety device while out on the water.
  • Question: How do I install the Sea Dog Kill Switch?

    Answer: The installation of the Sea Dog Kill Switch requires basic wiring skills. Generally, it involves connecting the switch's terminals to the engine's ignition system. Clear instructions are typically provided with the product. Ensuring a secure installation is vital to guarantee the switch functions properly during emergencies. Boaters often find it helpful to consult an experienced technician to assist in the installation for maximum safety.
  • Question: Can the Sea Dog Kill Switch be used on personal watercraft?

    Answer: Yes, the Sea Dog Kill Switch can be used on personal watercraft, as it acts similarly to marine engines in terms of safety. It features a lanyard designed to keep the operator safe in case of an unexpected fall. This is particularly important for high-speed personal watercraft, where the risk of losing control is greater. Implementing a kill switch can significantly reduce the dangers associated with personal watercraft activities.
  • Question: What should I do if the Kill Switch gets damaged?

    Answer: If the Sea Dog Kill Switch gets damaged, it is essential to replace it immediately to ensure ongoing safety while boating. Regular inspections are recommended to check for any signs of wear or damage. Using a functioning kill switch is critical for safety, and not having one could result in serious accidents. Always have a backup plan or an alternative safety mechanism in place while your kill switch is being replaced.
  • Question: Is the Sea Dog Kill Switch waterproof?

    Answer: The Sea Dog Kill Switch is designed to withstand marine environments, meaning it is constructed to be water-resistant. While it can handle splashes and exposure to water, it is advisable to ensure that the connections and mounting points are well-protected from excessive water ingress. Given that boating often involves unpredictable conditions, using water-resistant equipment helps ensure lasting functionality.
  • Question: Where can I buy Sea Dog Line - 3004.4272 Sea Dog 420488-1 Kill Switch with Lanyard in Saint Helena?

    Answer: You can purchase the Sea Dog Line - 3004.4272 Sea Dog 420488-1 Kill Switch with Lanyard from Ubuy in Saint Helena. Ubuy offers a range of marine safety equipment, including this particular kill switch, ensuring that you have access to high-quality boating accessories.
  • Question: What are the benefits of using a kill switch while boating?

    Answer: Using a kill switch enhances the safety of boating by providing an immediate way to stop the engine in emergencies, such as if the operator falls off the boat. This device minimizes the risks of accidents that can occur from an unattended running engine, especially in crowded waters. Regularly using a kill switch is a best practice among avid boaters and is often mandated for certain activities, making it a vital addition to any boating gear.

Sea-Dog Deck Hardware Editorial Review

Sea Dog Line - 3004.4272 Sea Dog 420488-1 Kill Switch with Lanyard is a universal switch that is compatible with various applications. It can be used as an ignition kill switch or a magneto kill switch. The red cap on the switch is a button that can be pressed to trigger the switch, and the lanyard does not need to be pulled as it has a stop button built in. The mounting hole has a diameter of 5/8", with the mounting depth variable from 1/16" to 5/8" wall thickness. Some customers found it easy to install and a perfect fit, while others had defective products that did not meet their expectations.

Customer Reviews & Ratings

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Pros

  • Universal switch that is compatible with various applications
  • Red cap button can be pressed to trigger the switch
  • Lanyard does not need to be pulled as it has a stop button built in
  • Mounting hole has a diameter of 5/8", with the mounting depth variable from 1/16" to 5/8" wall thickness

Cons

  • Some customers received defective products that did not meet their expectations

Platform Trust & Buyer Confidence

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4.2/5 9250 + reviews
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Mohammad
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“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
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23 July 2026 · via Trustpilot
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  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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SHP 41

Order now and get it around Thursday, September 03

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Replace lanyard if needed
  • Dual circuitry for flexible wiring options
  • Test switch before use
  • Size: 7/16 x 5/8
  • Max. capacity: 5 amps

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