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Sea-Dog Line 521550-1 Telescoping Inboard Motor Flusher 15-1/2" to 24-1/2"

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

521550-1
06/01/2036 7:01 AM
Sale Price

$13.91

In Stock (10+)

delivery box

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 521550-1 Inboard Motor Flusher is an essential maintenance tool designed to quickly and effectively flush away salt, sand, minerals, and other contaminants from your inboard engine's lower unit cooling system. Regular flushing helps extend your engine's service life by preventing corrosion and buildup that can damage internal components.

Key Features:

  • Telescoping design extends from 15-1/2" to 24-1/2" to fit various engine configurations
  • Durable molded rubber cup creates a secure seal over the water intake
  • Aluminum construction ensures long-lasting durability in marine environments
  • Simple operation - just fit the cup over the intake, connect a standard garden hose, and extend to desired length
  • Compatible with most inboard marine engines

This motor flusher makes routine engine maintenance quick and easy, allowing you to properly care for your boat's cooling system after each outing in salt or mineral-rich water. The adjustable length ensures a proper fit, while the quality construction withstands repeated use in harsh marine conditions.

Products specifications

Length

15-1/2" to 27-1/2"

Autoplicity has great prices and quality products for sale, I'd give it 1/2 star less for slow shipping given the option. Took a while to get out their door, regardless, I would still purchase again, thanks Autoplicity!

please don't show price on packing slip

Good Experince

I placed an order on Monday & received product on Saturday. I am very pleased with the turn around time & the price. They had the best price on the internet that I found and they were helpful to work with.

perfect

Quick and easy

Easy web site navigation. Excellent service, thank you.

This was an easy transaction, keep me notified thoughout the entire shipment. Price is what got my attention in the first place. I will be back for future needs.

Great prices, reasonable shipping costs. Shipped within 3 days of order. Didn't receive discount for valid coupon code (25OffShipping). No response to 2 emails. No indication of expected delivery date. Lots of unknowns but you can't beat the pricing.

Great Company. I needed a part quickly and for the right price. They had the best price on the internet, and made sure it got to me in two days before I went away on my road trip. I spoke to a representative that was very helpful. I highly recommend Autoplicity! Thanks!!!

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