My Account
Shopping Cart

Attwood Marine 3874-3 Thru-Hull Connector 1-1/8" to 1-1/4" White

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

3874-3
06/08/2036 2:26 AM
Sale Price

$7.86

In Stock (5)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Attwood Marine 3874-3 thru-hull connector provides a reliable, corrosion-resistant solution for routing hoses through boat hulls. Designed for hoses ranging from 1-1/8" to 1-1/4" in diameter, this fitting creates a secure, watertight connection that withstands harsh marine environments.

Key Features:

  • Molded from rugged marine-grade plastic that will not rust, corrode, or discolor over time
  • Non-conductive construction eliminates contribution to galvanic corrosion and electrolysis
  • Innovative design prevents unsightly hull streaking and staining
  • Allows countersinking for a flush, low-profile installation wherever required
  • White finish blends seamlessly with most hull colors
  • Fits standard hose sizes from 1-1/8" to 1-1/4" diameter

This thru-hull connector is ideal for bilge pump discharge lines, livewell systems, washdown applications, and other marine plumbing installations where a clean, reliable hull penetration is needed. The durable plastic construction ensures long-lasting performance without the maintenance concerns of metal fittings.

Products specifications

Finish

White

Flange

2-1/4"

Hose

1-1/8" - 1-1/4"

Install Hole Saw Size

1-3/8"

Length

3-1/4"

By far the fastest shipping and best prices on the web. Ordered it one day and it showed literally the next. Will definitely be buying from again!

Very good

So far so good.

Fast service purchased from them many times no problems and usually have coupon codes!! Will do buissiness with again.

its just an order, lets see how fast it gets here

Very fast shipping, always great prices.

I had a smog guy call me out that my filter was ok, my truck passed but since my pipe wasn't name brand we wouldn't pass me. It's a 2008 Nissan Titan. Needless to say I wasn't to happy about it but this place had what I needed for about $50 less than anywhere else and it shipped within 2 days. So far, so good, thanks Autoplicity

best price I could find...just ordered the product. Hope everything else is as good.

quick easy checkout and the cheapest shipping by far

Please for this item, specify that it is only 1 single shock, I was confused. But that yall!

I am a repeat customer and very happy with your products and pricing.

The price was right, and they were very helpful and told me all about the product I ordered, and had it shipped out to me quickly! <br><br>Thanks!

Super low prices! Quick check out options!

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy