Sea Dog 521655 Motorwell Boot – 5-1/2", Black Accordion Seal, UV Rubber, Mounting Ring Included
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Sea Dog 521655 Motorwell Boot – 5-1/2", Black Accordion Seal, UV Rubber, Mounting Ring Included
The Sea Dog 521655 is a 5-1/2" motorwell boot for organizing and protecting engine control cables, wiring, and fuel lines as they pass through the motorwell. The accordion-style seal flexes with cable movement while maintaining a seal around the cable bundle, protecting against water intrusion through the motorwell opening. The mounting ring is included; six #8 RH fasteners are required for installation but not included.
For the smaller 3" version, see the Sea Dog 5216301 Motorwell Boot (3").
Specifications
- Size: 5-1/2"
- Style: Accordion seal — flexes with cable movement while maintaining seal
- Material: UV-stabilized molded rubber
- Color: Black
- Mounting Ring: Included
- Fasteners Required: Six #8 RH fasteners (not included)
- Part Number: 521655 | SKU: 354-521655
Compatible Applications
- 5-1/2" motorwell openings on outboard-powered boats requiring a cable and wiring boot
- Routing and protecting engine control cables, wiring harnesses, and fuel lines through the motorwell
- Verify the motorwell opening is 5-1/2" before ordering — motorwell boots are sized to the opening
- For a 3" motorwell boot, see the Sea Dog 5216301 Motorwell Boot (3")
- For splashwell cable boots, see the T-H Marine CB1 (3") or CB2 (2")
Parts Desk Insights
Best Use Case: The 521655 is the correct motorwell boot when your motorwell opening is 5-1/2" — the larger of the two Sea Dog motorwell boot sizes. The 5-1/2" size accommodates larger cable and wiring bundles typical of larger outboard engines or multi-cable installations. Like the 3" version, the accordion-style design flexes as cables move during steering and engine operation without breaking the seal, which is important for a motorwell opening that sees constant cable movement. The UV-stabilized rubber holds up well in direct sun exposure. The mounting ring provides a clean, finished appearance and secures the boot to the motorwell panel. Six #8 RH fasteners are required for installation — have these on hand before starting the install. Confirm your motorwell opening is 5-1/2" before ordering.
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.