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Sea-Dog Line 5021591 Lower Unit Standard Pump 8mm-1.25 Thread Pitch

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

5021591
09/12/2036 5:43 AM
Sale Price

$3.94

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 5021591 Lower Unit Standard Pump is designed for easy and efficient gear oil changes on a wide range of marine outboard and sterndrive lower units. This essential marine maintenance tool features a durable nylon and aluminum construction for long-lasting reliability in harsh marine environments.

Key Features:

  • Standard pump design fits quart-size gear oil bottles
  • Flexible hose reaches difficult-to-access fill ports and drain locations
  • Threaded 3/8"-16 fitting provides secure connection to lower unit fill ports
  • Thread pitch: 8mm-1.25 for proper sealing
  • Nylon and aluminum construction resists corrosion

Compatibility:

  • Mercruiser sterndrives
  • OMC outboards and sterndrives
  • Evinrude and Johnson outboards
  • Honda outboards (70hp and up)
  • Volvo Penta sterndrives
  • Force outboards
  • Mercury outboards (US origin models)
  • Gamefisher lower units

This pump simplifies lower unit maintenance by allowing you to pump gear oil directly from the bottle into the lower unit, eliminating messy spills and ensuring proper fluid levels for optimal performance and protection.

Great price and shipping was faster than expected!

Please send tracking information Please send it fast !! Thanks

Great brands at great prices.

Easy to put on, shipping was fast

It's all good

Great product- super good quality and fast delivery. Thanks

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