Sea-Dog G4 Bi-Pin Halogen Bulb – 20W, 12.8V, 700cp – Pair
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
High-Output G4 Halogen Bulbs for 12V Marine Fixtures
These Sea-Dog G4 bi-pin halogen bulbs are JC-type replacements for the G4 socket standard found in a wide range of marine cabin lights, reading lights, and courtesy fixtures. At 20W and 700 candlepower, they deliver a bright, warm output well-suited to task lighting and general cabin illumination on 12V systems.
Sold as a pair, giving you an immediate spare alongside your replacement — a practical approach for offshore or extended coastal passages where sourcing a specific bulb type isn’t always an option.
Key Features
- G4 bi-pin base (JC type) — compatible with the G4 socket standard used across a wide range of marine fixtures
- 20W, 700 candlepower — bright, warm halogen output for task and cabin lighting
- 12.8V DC — compatible with standard 12V marine electrical systems
- Sold as a pair — one to install, one to keep as a spare
Best Use Cases
A direct replacement for G4 halogen fixtures in marine cabins, reading lights, chart table lights, and courtesy lighting on 12V systems. The 700cp output makes these well-suited for primary task lighting where a bright, focused halogen beam is preferred over the softer output of LED alternatives.
Parts Desk Insights
Confirm your fixture uses a G4 bi-pin socket before ordering — G4 is a common marine standard but not universal. At 20W, these bulbs run hot; ensure your fixture housing is rated for halogen use. If you’d prefer to reduce heat and power draw, the Scandvik LED replacement range covers G4 sockets directly: see the Scandvik 41101P, 41102P, 41104P, or 41106P (all 10–30V, G4/Bayonet/Festoon compatible). For other Sea-Dog marine bulb replacements, see the Sea-Dog #1034 Bayonet Base Incandescent Bulb and the Sea-Dog #906 Wedge Base Bulb. SKU: 354-4418911.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 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.