Ancor Marine Grade™ Tinned Butt Connectors – #4 AWG, 2-Pack (252150)
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100% Tinned Copper Butt Connectors for Marine Wiring – #4 AWG
These Ancor Marine Grade™ tinned butt connectors provide a clean, reliable inline splice for #4 AWG wire in marine electrical systems. Made from 100% tinned copper, they resist the corrosion that standard connectors can’t handle in salt air and wet environments. The barrel accepts wire from both ends for a secure crimp connection that maintains conductivity over the long term.
Sold as a 2-pack — enough for a single splice or two separate connections on the same circuit.
Compatible Applications
- Inline wire splices on #4 AWG marine circuits
- Shore power and battery charger wiring repairs and extensions
- Bilge pump and blower motor circuit connections
- Inverter and DC distribution wiring splices
- Alternator and charge circuit repairs on #4 AWG
Product Details
- Wire Gauge: #4 AWG
- Material: 100% tinned copper
- Connection Type: Crimp butt connector
- Pack Quantity: 2 connectors
- Part Number: 252150
Also available in other gauges:
- Ancor Marine Grade™ Tinned Butt Connectors – #8 AWG, 2-Pack (252130)
- Ancor Marine Grade™ Tinned Butt Connectors – #6 AWG, 2-Pack (252140)
- Ancor Tinned Butt Connector 2 AWG 2-Pack (252160)
- Ancor Tinned Butt Connector 1/0 AWG 2-Pack (252180)
- Ancor Tinned Butt Connector 2/0 AWG 2-Pack (252190)
For heat-shrink insulated options, see the Ancor Marine Grade™ Heat Shrink Butt Connector Assortment.
🔧 Parts Desk Insights
Best use case: This is the right connector for a clean, permanent inline splice on #4 AWG wire — a gauge commonly used in shore power feeds, battery charger wiring, bilge pump circuits, and inverter connections. The tinned copper barrel resists corrosion far better than standard bare copper connectors in a marine environment, maintaining conductivity over years of exposure to moisture and salt air. If you need a waterproof or heat-shrink sealed connection, consider the heat shrink butt connector assortment instead. For heavier gauge splices, step up to the 2 AWG or 1/0 AWG versions in the same family.
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.