SeaDog Exhaust Thru Hull | Cast 316 Stainless | Includes Stainless Flap with Rubber Seal
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You have 30 days to request a return. All sale items are final sale.
Sea-Dog exhaust thru-hull fitting designed to help keep water from entering the exhaust system. Cast 316 stainless construction includes a stainless flap with rubber seal for corrosion resistance and dependable sealing.
Key Features
- Cast 316 stainless steel exhaust thru-hull construction
- Includes stainless flap with rubber seal
- Flap design helps act as a barrier to reduce backflow/water intrusion into the exhaust outlet
Product Compatibility
- Marine exhaust systems requiring a thru-hull outlet and flapper-style sealing (consult your exhaust layout and hose/barb sizing before purchase)
Product Details
- Product type: Hose/Mufflers/Exhaust (Marine exhaust thru-hull)
- Brand: Sea-Dog Line
- Material: Cast 316 Stainless
- Includes: Stainless flap with rubber seal
- SKU: 354-521125
- Variant barcode: 35514521857
- Variant weight: 943 GRAMS
Parts Desk Insights
Best Use Case: Best suited for replacing or upgrading an existing flapper-style exhaust thru-hull outlet with cast 316 stainless construction when you want a corrosion-resistant, seal-focused fitting for your exhaust run.
Common Issues: If water is entering past the outlet, the most common causes are a worn or damaged flap/rubber seal, improper installation alignment, or mismatched hose/barb sizing that prevents a tight, secure connection at the exhaust hose.
Related Products & Accessories
- Browse Exhaust Systems - Find additional Sea-Dog exhaust components, hoses, and related marine exhaust parts for your install.
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.