Shields Marine Vinylvent Ducting Hose – Series 400/402, White
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You have 30 days to request a return. All sale items are final sale.
PVC Bilge Ventilation Hose – UV & Ozone Resistant
The Shields Marine Vinylvent Series 400/402 is a flexible PVC ducting hose reinforced with an anodized wire helix, designed specifically for venting bilge fumes and gases aboard marine vessels. Its white finish, UV resistance, and ozone resistance make it a reliable long-term choice for engine compartment ventilation systems.
The anodized wire helix maintains the hose’s round profile under bends and compression, ensuring consistent airflow through blower systems even in tight routing situations. The flexible PVC construction allows easy installation in confined engine compartments without kinking.
Key Features
- PVC construction reinforced with anodized wire helix for shape retention under bends
- Resistant to UV, ozone, and weathering for long service life
- Designed for bilge fume and gas ventilation applications
- Flexible construction for easy routing in tight spaces
- White finish — Series 400/402
Typical Applications
Used with marine blower systems to vent flammable bilge gases from engine compartments before starting. Required by ABYC and USCG standards on gasoline-powered inboard and I/O vessels. Also suitable for general below-deck ventilation ducting.
Parts Desk Insights
Best Use Case: The go-to recommendation for customers replacing or extending bilge blower ducting on inboard and sterndrive gasoline boats. The wire-helix construction is important here — it keeps the hose from collapsing when routed around tight bends near the blower motor, which is a common failure point with cheaper smooth-wall hose. Recommend this over non-reinforced alternatives for any blower application.
Series Note: Series 400 and 402 refer to the hose diameter and configuration — confirm the customer’s existing hose diameter before ordering. Common sizes for bilge blowers are 3" and 4". For a black vinyl blower hose alternative, see the Seachoice 402 Series Vinyl Blower Hose – 3" x 10’ or the Seachoice 402 Series – 3" x 50’.
Regulatory Note: USCG regulations require gasoline-powered inboard and I/O boats to have a powered ventilation system. This hose is suitable for those systems. If a customer is unsure whether their boat requires powered ventilation, the answer is almost always yes for enclosed engine compartments on gasoline boats.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.