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Attwood Marine 66542-3 Stainless Steel Thru-Hull Fitting 1 Inch Short

Manufacturer

Attwood Marine

<h3>About Attwood Marine</h3><p><strong>Attwood Marine</strong> has been a cornerstone of the boating world for over a century. Founded with a commitment to quality engineering and practical design, Attwood grew from manufacturing underwater hardware and on-deck fittings into one of the most recognized names across every segment of the marine accessories market. Today, the brand operates as part of the Navico Group by Brunswick — a global family of market-leading marine companies — yet it has never lost the focused, boater-first philosophy that built its reputation.</p><p>What sets Attwood apart is their end-to-end approach: they design, manufacture, test, and distribute their own products rather than simply resourcing components from third parties. Every product in their catalog is tested against the highest U.S. Coast Guard (USCG), American Boat and Yacht Council (ABYC), and CE standards, giving boaters and OEM boat builders alike the confidence that Attwood parts will perform when it matters most. Corrosion-resistant materials — including 304 and 316 stainless steel, chrome-plated zinc, and marine-grade synthetics — are used throughout the lineup to ensure durability in both freshwater and saltwater environments.</p><p>Attwood is also a leading OEM supplier, meaning you'll find their components pre-installed on boats straight from the factory. That pedigree speaks volumes: when boat manufacturers trust a brand to equip new vessels, that's a strong vote of confidence for the aftermarket buyer as well.</p><h3>Attwood Marine Product Categories</h3><p>Attwood's catalog spans a remarkably broad range of marine needs. On the docking and mooring side, their <a href="/7239-attwood-marine-fenders-201953">boat fenders</a> provide reliable hull protection against docks, pilings, and other vessels — an essential piece of gear for any boat owner. For on-water comfort and cockpit organization, Attwood's <a href="/7239-attwood-marine-seat-pedestal-packages-202496">seat &amp; pedestal packages</a> deliver complete seating system solutions backed by years of ergonomic engineering, while their <a href="/7239-attwood-marine-seat-clamp-mounts-202497">seat clamp mounts</a> and <a href="/7239-attwood-marine-seat-clamp-mounts-200927">mounting hardware</a> make swapping or positioning seats quick and secure. Rounding out the seating ecosystem, Attwood's broad selection of <a href="/7239-attwood-marine-seating-table-parts-accessories-202501">seating &amp; table parts and accessories</a> keeps every swivel, slide, and fitting performing at its best season after season.</p><p>Beyond seating and docking, Attwood is well known for its bilge and aerator pumps (including the iconic Sahara Mk2 and Tsunami series), navigation lighting, fuel systems, rod holders, and trailering accessories — making it a one-stop resource for outfitting or refreshing virtually any powerboat, fishing boat, or recreational vessel.</p><h3>Why Boaters Trust Attwood</h3><ul><li><strong>100+ years of marine expertise</strong> — a track record that few brands can match</li><li><strong>USCG, ABYC &amp; CE certified</strong> products built to rigorous safety and performance standards</li><li><strong>OEM-preferred supplier</strong> to leading boat manufacturers worldwide</li><li><strong>Corrosion-resistant construction</strong> engineered for saltwater and freshwater environments</li><li><strong>Full design-to-distribution control</strong> ensuring consistent quality across every product</li></ul>

Part Number

66542-3
06/07/2036 3:33 PM
Sale Price

$26.02

4 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Attwood Marine 66542-3 is a premium thru-hull fitting designed for above-waterline marine applications. Cast from high-grade 316 stainless steel, this fitting provides superior corrosion resistance in harsh marine environments.

Key Features:

  • Cast from durable 316 stainless steel for maximum corrosion resistance
  • 1-inch hose connection in short length configuration
  • Integrated channel under flange designed to hold a bead of marine sealant for watertight installation
  • Features wrench flats or end notch for easy installation and removal
  • Designed specifically for installation above the waterline only

This thru-hull fitting is ideal for livewell systems, aerators, washdown pumps, and other above-waterline marine plumbing applications. The 316 stainless steel construction ensures long-lasting performance even in saltwater conditions, while the sealant channel helps create a secure, leak-free installation.

Products specifications

Flange

2-1/4"

Hose

1"

Hose Size

1" I.D.

Install Hole Saw Size

1-1/2"

Length

2-1/2"

Perfect

Wicked fast shipping! 3 days from California to Key West, Florida! We are amazed by this super fast service. Part is brand new and fits perfectly! Will use you again and HIGHLY recommend you!

Easy to order. Good prices on shipping.

So far process has been very easy.

Like the Amazon order option

Web site very easy to use!

OUTSTANDING ALL THE WAY ARROUND. Super prices (2/3 of the price of your lowest competitor). Shipping cost was 25% of what others wanted. Recieved 5 days from order date. I will shop here again and will recomend to others.

Took a little longer to ship out the item than expected. But other than that, great prices. Great checkout process. Will deal with again if I find something else that I want to buy for my G35.<br>Thanks! (order #: 9261)

Autoplicity was easy to use, low price and received the product very quickly. It arrived in excellent condition and was as described. I would buy from them again.

Great prices and fast delivery.

Prompt order processing and shipping, the item I received came in good condition and I am eager to get it installed on my car. Over the phone customer support was prompt and polite, I would order from them again.

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