Sea-Dog 352100-1
Chrome-plated zinc • Straight
Look for a chrome-plated straight zinc vent; verify the original application because Sea-Dog recommends freshwater use.
Identify Sea-Dog Tank Vents: Zinc, Stainless and Black Nylon Models
A tank vent on a boat can have a chrome-coloured head, a black nylon head or a flush stainless fitting, but those appearances are not proof of interchangeability. Sea-Dog's part numbers distinguish the material, the way the hose turns behind the hull, and the manufacturer's recommended application. Compare the original fitting before selecting a replacement.
Check the intended tank service.
Sea-Dog specifically recommends 352100-1 for fresh-water use. Do not assume that a chrome-plated vent from a fuel-tank listing has the same application as a 316 stainless or nylon gas-tank vent.
How to recognize each Sea-Dog vent
Identify the outlet direction
A straight hose barb points behind the exposed head. A 90-degree style turns sideways within the installation.
Identify the finish and material
352100-1 is chrome-plated die-cast zinc, 352230-1 and 353230-1 are 316 stainless, and 357100-1 is black molded nylon.
Check the visible mounting style
353230-1 is specifically the flush-mount 90-degree model. The regular 352230-1 has a different external form.
Compare the hose connection
All four listed models have an integral 5/8-inch hose barb. That shared measurement alone does not prove fit or application.
Part-number and material reference
A and B are the labeled dimensions in Sea-Dog's individual part drawings. Match the drawing orientation before using either value as a clearance measurement.
| MPN | Material | Style | Hose barb | Drawing A / B |
|---|---|---|---|---|
| 352100-1 | Chrome-plated zinc | Straight | 5/8 in | A 1 in; B 2-1/8 in |
| 352230-1 | 316 stainless steel | 90-degree | 5/8 in | A 1 in; B 2-5/8 in |
| 353230-1 | 316 stainless steel | Flush, 90-degree | 5/8 in | A 2-9/16 in; B 1-13/16 in |
| 357100-1 | UV-resistant molded nylon | Straight | 5/8 in | A 1 in; B 2-1/8 in |
What shared hose sizing does not tell you
The presence of a 5/8-inch barb doesn't prove that mounting depth, material or tank service is correct. Screened stainless vent 352230-1, flush stainless 353230-1, nylon 357100-1 and zinc 352100-1 must be identified separately.
Checks before replacing a tank vent
- Record any molded or stamped manufacturer number from the old vent; note whether the hose points straight back or turns 90 degrees.
- Check the existing vent-hose inside diameter (5/8 inch for these models) and compare the manufacturer's drawing dimensions and exposed head.
- Match the material and the original venting application. Pay particular attention to the 352100-1 manufacturer's freshwater recommendation.
- Inspect the existing vent hose and installation for damage or blockage; follow the boat and component manufacturer's fuel-system service guidance.
Locate these exact Sea-Dog part numbers
These catalog products are linked individually by manufacturer number. Check the current product condition and availability on each listing.
Sea-Dog 352230-1
316 stainless steel • 90-degree
Match the screened stainless external head and 90-degree hose connection rather than a straight outlet.
Sea-Dog 353230-1
316 stainless steel • Flush, 90-degree
Identify the flush outer fitting and 90-degree 5/8-inch hose tail; dimensions differ from 352230-1.
Sea-Dog 357100-1
UV-resistant molded nylon • Straight
The black molded-nylon head differs from the metal versions, despite sharing the 5/8-inch connection.
Other marine parts identification pages
Identify Sea-Dog deck-fill caps, keys and emergency plugs • Sea-Dog drain-plug parts identification
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