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Sea-Dog Line 512129-1 Replacement Cap for Washdown Water Outlet

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

512129-1
06/12/2036 12:55 AM
Sale Price

$4.38

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 512129-1 is a replacement nylon cap designed specifically for the Sea-Dog 512120-1 washdown water outlet fitting. This chrome-plated nylon cap provides a secure, protective seal for your marine washdown system when not in use.

Key Features:

  • Direct replacement for Sea-Dog 512120-1 washdown water outlet (part number 5121201)
  • Chrome-plated nylon construction for corrosion resistance in marine environments
  • Fits 1-1/2" I.D. washdown water outlets with standard male garden hose threads (3/4" MGHT)
  • Lightweight design at just 0.02 lbs
  • UPC: 035514512107

This replacement cap helps protect your onboard water system from debris, salt spray, and contamination when the washdown outlet is not in use. The chrome-plated finish matches the aesthetic of chrome brass washdown fittings commonly found on recreational boats and marine vessels.

Products specifications

Description

Replacement Plug

Autoplicity was great, I ordered my springs late Monday night and I received a shipment order confirmation number early Wednesday. So basically 1 business day and my order was out the door, pretty impressive. Can't wait 'till it gets here! Thanks Autoplicity!

Fast. Quality . Low price

you say you have the item in stock

Order got shipped in 2 different deliveries and 2nd was delayed. Customer service worked as it should and did well though fixing the issue.

Very easy

Good price for item

Great Price, Not too much more for 2 day shipping either.

Good so far

Quick, easy and great price.

Autoplicity has an abundance of name brand parts at unbeatable prices. Customer service was also great to deal with. Receipt and tracking info was provided promptly.

So far GREAT. Best price for sure and free shipping is also AWESOME!!!

Easy!!! Fast.... the items were fine but the packing suffered horribly in transit. The box was tattered and sagging but the contents had not gotten out.....yet. Other than that everything was swell.

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