SKU: YQQGQ8HUB8 |  Mfg. Part: 66549-3  | UPC: 022697665492  | 
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Attwood 66549-3 Attwood 1-18" Stainless Steel Thru-hull Straight Fitting

6 Available
Condition: New

$39.39  $53.18
Attwood Marine ATTWOOD MARINE
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Attwood 1-1/8" Stainless Steel Thru-Hull Straight Fitting

Enhance the durability and appearance of your boating setup with this high-quality stainless steel thru-hull fitting. Built to withstand the harsh marine environment, it is far superior to plastic alternatives.

Key Features:

  • Constructed from premium Enhanced 316 Stainless Steel for maximum strength and corrosion resistance.
  • Mirrored polished finish adds style and protects against rust and degradation.
  • Robust design allows for effective stress distribution and flexibility during use.

Installation Benefits:

  • Includes a silicone gasket for a superior seal.
  • Innovative channel design under the flange simplifies seal application.
  • Features wrench flats for easy installation from inside the hull.
  • Barbed ends accommodate multiple clamps for added security.

Specifications:

  • Hose Size: 1-1/8" Inner Diameter
  • Flange Diameter: 2-1/4"
  • Thread O.D.: 1-3/8"
  • Thread Length: 2-3/8"
  • Barb Length: 1-1/4"
  • Total Length: 3-7/8"
  • Required Hole Saw Size: 1-1/4"
  • Thread NPSM: 1"
  • Maximum Hull Thickness: 1-3/4"

*Designed for above-water line installation only.


  • High-strength Enhanced 316 Stainless Steel construction
  • Polished, corrosion-resistant finish for long-lasting performance
  • Easy installation with silicone gasket and innovative channel for sealant
  • Wrench flats for inside hull tightening
  • Room for multiple clamps on barbed tails
  • Manufacturer:
  • Model Number:
  • Condition:
  • Weight:
  • Dimensions:
  • Updated:
  • Added:
  • Country of Origin:
  • Attwood Marine
  • 66549-3
  • New
  • 0.85 lbs
  • 7 X 2 X 4
  • Dec 04, 2025
  • May 17, 2023
  • THAILAND

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Attwood 66549-3 Attwood 1-18" Stainless Steel Thru-hull Straight Fitting

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