6 Gauge Battery Cable Butt Connector 6 AWG Marine Electrical - 6BC

Marine Battery Cable and Electrical Rigging

6 Gauge Battery Cable Butt Connector - 6 AWG Marine Cable Splice

The 6BC Battery Cable Butt Connector is designed for joining two sections of 6 gauge (6 AWG) battery cable. This heavy-gauge electrical connector is used for battery cable repairs, cable extensions and custom marine electrical installations.

Whether repairing an existing battery cable or building a custom cable assembly, a properly installed butt connector provides a mechanical and electrical connection between two cable ends.

The 6BC connector can be used with compatible 6 AWG red or black battery cable. For marine applications, the completed connection should be protected with appropriately sized marine-grade heat-shrink tubing to help prevent moisture intrusion and corrosion.

Pro Marine USA also carries matching 6 gauge battery cable and 1/2-inch heat shrink in red, black and combination packs, making it easy to purchase the materials needed for your battery cable installation.

Product Information

• Item Number: 6BC
• Product: Battery Cable Butt Connector
• Cable Size: 6 Gauge / 6 AWG
• Connector Type: Butt Splice Connector
• Application: Battery Cable Splicing and Repair
• Compatible Cable: 6 AWG Battery Cable
• Connection Type: Crimped Cable Splice
• Installation: Requires an appropriate heavy-duty cable crimping tool
• Recommended Protection: Compatible Marine-Grade Heat Shrink
• Typical Uses: Marine Battery Cables, Electrical Rigging and Cable Repairs

OEM and Cross Reference Numbers

The 6BC is a general-purpose battery cable connector rather than an engine-specific OEM replacement part. No additional manufacturer cross-reference numbers have been provided for this connector.

What This Part Is Used For

The 6BC butt connector is used to join two sections of 6 AWG battery cable when repairing, extending or assembling heavy-gauge electrical wiring.

Marine battery cables can carry significant electrical current. Connections must be properly sized, securely crimped and protected against moisture and corrosion.

Common Applications

• Marine battery cable repairs
• Joining two sections of 6 AWG battery cable
• Custom battery cable fabrication
• Boat electrical system rigging
• Battery cable extensions where permitted by the installation requirements
• Battery switch and distribution wiring repairs
• Marine engine battery cable service
• Other compatible heavy-gauge DC electrical installations

This connector is not engine-specific. Compatibility is determined primarily by the cable gauge, conductor construction and electrical installation requirements.

Compatible Battery Cable Applications

The 6BC connector is intended for use with compatible 6 gauge battery cable. Pro Marine USA offers the following matching cable options.

Build or Repair Your 6 Gauge Battery Cable

Complete your battery cable installation with compatible 6 AWG cable and heat-shrink tubing available from Pro Marine USA.

Recommended Heat Shrink for Battery Cable Connections

After crimping a battery cable butt connector, protect the completed splice with properly sized marine-grade heat-shrink tubing.

Heat shrink helps provide electrical insulation, strain relief and protection from moisture when the tubing is appropriate for the application and correctly installed.

Important: Verify that the heat-shrink tubing has the appropriate expanded diameter, recovered diameter and environmental rating for the completed splice. A nominal 1/2-inch size alone does not establish fit.

How to Install a 6 Gauge Battery Cable Butt Connector

Proper installation is essential for a reliable heavy-gauge battery cable connection.

1. Disconnect the battery. Isolate the electrical system before working on battery cables. Disconnect the negative connection first when appropriate for the installation.
2. Measure and cut the cable. Determine the required cable length and cut the 6 AWG battery cable cleanly.
3. Prepare the heat shrink. Slide an appropriately sized piece of heat-shrink tubing onto the cable before making the splice.
4. Strip the cable insulation. Remove only enough insulation for the connector's required insertion depth. Avoid damaging the conductor strands.
5. Insert the cable. Insert the stripped cable end fully into one side of the butt connector. Repeat with the second cable.
6. Crimp the connector. Use a properly sized heavy-duty crimping tool and the crimping method specified for the connector and cable.
7. Inspect the connection. Check that both cable ends are securely retained and the crimp is properly formed.
8. Apply heat shrink. Center the tubing over the splice and shrink it according to the tubing manufacturer's instructions.
9. Secure the cable. Support the completed assembly and protect it from abrasion, sharp edges and excessive movement.

Important Battery Cable Installation Information

Battery cables can carry very high current. Improperly installed connections can overheat, create excessive electrical resistance or cause electrical system failure.

• Use only connectors approved for the cable size and conductor type.
• Use the correct crimping tool and manufacturer-recommended crimp method.
• Do not use ordinary pliers to crimp heavy-gauge battery cable connectors.
• Do not rely on solder alone to secure a battery cable connection.
• Protect the completed connection from moisture, abrasion and vibration.
• Follow applicable marine electrical standards and equipment manufacturer requirements.
• Use a continuous cable run where required by the engine or electrical system manufacturer.
• Do not splice engine starting cables where the manufacturer prohibits splices.

For critical starting and high-current circuits, have the installation inspected by a qualified marine electrical technician when necessary.

Key Features and Benefits

• 6 AWG Cable Compatibility: Designed for compatible 6 gauge battery cable connections.
• Battery Cable Repair: Useful for joining or repairing heavy-gauge electrical cable.
• Marine Electrical Applications: Suitable for appropriately specified boat battery and rigging installations.
• Red or Black Cable: Can be used with compatible 6 AWG cable regardless of insulation color.
• Crimp Connection: Designed to be installed using an appropriate heavy-duty cable crimping tool.
• Heat-Shrink Protection: Can be protected with correctly sized external heat-shrink tubing.
• Matching Products Available: Pro Marine USA carries 6 AWG cable and red, black and combination heat-shrink options.

Frequently Asked Questions

What size cable does the 6BC butt connector fit?

The 6BC butt connector is intended for compatible 6 gauge (6 AWG) battery cable. Confirm the connector and conductor dimensions before installation.

Can I use this connector on marine battery cables?

It can be used for appropriate marine battery cable splicing applications when the connector, cable, crimping method and environmental protection meet the installation requirements.

Can I use the same connector with red and black battery cable?

Yes. The connector is sized by cable gauge, not insulation color. It can be used with compatible 6 AWG red or black cable.

What black battery cable works with this connector?

Pro Marine USA offers 6B - 6 Gauge Black Battery Cable.

What red battery cable works with this connector?

Pro Marine USA offers 6R - 6 Gauge Red Battery Cable.

Do I need heat shrink when installing a battery cable butt connector?

For marine applications, properly selected heat-shrink tubing is recommended to insulate and protect the completed connection against moisture and corrosion.

What heat shrink can I purchase for this connector?

Pro Marine USA offers 1/2-inch heat shrink in red, black and combination packs. Confirm that the tubing will fit over the completed splice and recover tightly around the cable insulation.

Does this connector already have heat shrink attached?

This listing identifies a battery cable butt connector. Integrated heat shrink has not been confirmed. The heat-shrink products linked above are available separately.

Can I use regular pliers to crimp this connector?

No. Heavy-gauge battery cable connectors require an appropriate crimping tool and correctly matched dies or crimping method.

Can I extend an outboard engine battery cable with this connector?

Only where the engine manufacturer and applicable electrical installation requirements permit a spliced battery cable. Some engine starting circuits require continuous cable runs.

Is 6 AWG the same as 6/0 AWG?

No. 6 AWG and 6/0 AWG are different cable sizes. This connector is identified for 6 AWG cable, not larger cable sizes.

Can this connector be used with 4 gauge or 8 gauge cable?

No. Use a connector specifically sized for the cable gauge being installed.

Dealer Discounts & Store Policies

Wholesale Marine Parts Pricing

Pro Marine USA supplies OEM and aftermarket marine parts, electrical components, battery cables and rigging supplies to marine repair shops, dealerships, professional technicians and retail customers.

Qualified marine businesses can apply for a Pro Marine dealer account to access wholesale pricing on eligible products.

Apply for Dealer Pricing

Shipping Information

• Free shipping on qualifying orders over $100 within the continental United States. Oil and oversized items are excluded.
• In-stock orders placed before 5:30 PM EST ship the same business day, Monday-Friday.
• Shipping options include UPS, USPS and FedEx.
• Typical delivery is 1-5 business days, depending on destination and shipping service.

30-Day Return Policy

• Eligible returns are accepted within 30 days.
• Parts must be new, unused and in original packaging.
• Installed parts are not returnable.
• OEM electrical components are not returnable.
• Return authorization is required before returning merchandise.

Need Help Selecting Battery Cable Components?

Contact Pro Marine USA for assistance identifying battery cable, electrical connectors, heat shrink and other marine rigging supplies.

Contact Pro Marine USA or call 941-721-3000.

Searchable Part Numbers

6BC, 6B, 6R, 12RB, 12R, 12B

Searchable Terms

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