Shopping security
Whether you are replacing an old, rusty boat tank vent on your fishing vessel or installing a brand new fuel system on your yacht, this marine-grade 316 stainless steel tank vent is built to handle the harsh marine environment. It helps your fuel or water tank equalize pressure during filling and draining, preventing annoying vacuum locks, tank collapse, or pressurized leaks. Designed for durability and a clean look on your boat’s transom or deck side.
| Parameter | Small Model | Large Model |
|---|---|---|
| Available Sizes | 1 inch & 1-1/4 inch | 1-1/2 inch & 2 inch |
| Material | 316 Marine Grade Stainless Steel | |
| Total Height | 68mm (approx 2.67 inches) | 90mm (approx 3.54 inches) |
| Top Cap Diameter | 79mm (approx 3.11 inches) | 101mm (approx 3.97 inches) |
| Thread Outer Diameter | 33mm (approx 1.3 inches) | 48mm (approx 1.9 inches) |
| Thread Length | 25mm (approx 0.98 inches) | 30mm (approx 1.18 inches) |
| Included Components | Vent head, rubber gasket, lock nut (as shown in photos) | |
No. 316 stainless steel is specifically engineered with added molybdenum to resist chloride attack from saltwater, making it far more corrosion-resistant than standard 304 stainless steel. It is the standard material for marine fittings.
Yes. This is designed for both fuel and fresh water tanks. It allows fuel vapors to vent safely and prevents a vacuum from forming, which can deform a fuel tank, ensuring smooth fuel flow to your engine.
Absolutely. Just like in our photos, every order includes the stainless steel vent head assembled with the threaded body, the rubber sealing washer for a water-tight fit against the hull, and the locking nut. You won't need to buy extra hardware.
Measure the hole you have in your boat's hull or your existing pipe. For 1-inch and 1-1/4 inch hoses, choose the smaller model with the 33mm thread OD. For 1-1/2 inch and 2 inch hoses, choose the larger model with the 48mm thread OD. If you are unsure, it is always best to measure the existing tank vent thread diameter first.
The top head is designed as a secure unit to prevent tampering, but the slotted gaps are wide enough to let air pass while catching major debris. For deep cleaning, you can easily unscrew the entire dome assembly to flush out any accumulated salt or dust, then screw it back on tightly.
Ships within 48 hours · Estimated delivery Jun 30 - Jul 5
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Top-Converting Item to Boost Your Average Order