Restore and upgrade the electrical performance of your Ford 6.0L / 6.4L / 6.7L / 7.3L Powerstroke with the Big 7 Battery Cable Kit. Designed specifically for F-250 and F-350 trucks, this complete replacement system eliminates weak, corroded factory wiring and delivers improved starting power, charging efficiency, and overall reliability.
Each kit is constructed from 100% fine-strand oxygen-free copper wire with a durable SAE-rated jacket, ensuring maximum conductivity and long-term durability. Heavy-duty terminals are secured using high-strength, gas-tight crimps and sealed with marine-grade heat shrink to protect against corrosion and harsh conditions.
Whether you're fixing voltage drop issues or upgrading for added electrical demand such as lighting, winches, or performance accessories, this all-in-one Big 7 system provides a noticeable improvement in power delivery and consistency over factory cables.
High-Output Alternator Option:
Adds larger cables for trucks equipped with a high-output alternator
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The Big 7 Battery Cable Kit is a complete replacement battery cable system built with oxygen-free copper wire to restore starting power and charging efficiency.
Fits
1990-2021 Ford 6.0L / 6.4L / 6.7L PowerStroke
Brand
Big 7 Kits
Best for
Fixing voltage drop or upgrading electrical capacity for added accessories
Key features
100% fine-strand oxygen-free copper wire
Durable SAE-rated wire jacket
Heavy-duty terminals with gas-tight crimps
Marine-grade heat shrink for corrosion protection
Optional larger cables for high-output alternator setups
Restore and upgrade the electrical performance of your Ford 6.0L / 6.4L / 6.7L / 7.3L Powerstroke with the Big 7 Battery Cable Kit. Designed specifically for F-250 and F-350 trucks, this complete replacement system eliminates weak, corroded factory wiring and delivers improved starting power, charging efficiency, and overall reliability.
Each kit is constructed from 100% fine-strand oxygen-free copper wire with a durable SAE-rated jacket, ensuring maximum conductivity and long-term durability. Heavy-duty terminals are secured using high-strength, gas-tight crimps and sealed with marine-grade heat shrink to protect against corrosion and harsh conditions.
Whether you're fixing voltage drop issues or upgrading for added electrical demand such as lighting, winches, or performance accessories, this all-in-one Big 7 system provides a noticeable improvement in power delivery and consistency over factory cables.
High-Output Alternator Option:
Adds larger cables for trucks equipped with a high-output alternator
Big 7 Kits is a U.S.-based manufacturer specializing in high-quality battery cable upgrade kits designed to restore and improve vehicle electrical performance. What began as a solution to common starting and voltage issues has grown into a trusted brand serving enthusiasts and vehicle owners nationwide.
Built on a foundation of durability and real-world performance, each kit is engineered using premium materials such as fine-strand oxygen-free copper wiring, heavy-duty crimps, and marine-grade heat shrink. The brand name is inspired by its comprehensive “Big 7” cable upgrade system, delivering complete, easy-to-install solutions that outperform factory components.
With roots in the enthusiast community, Big 7 Kits continues to expand its lineup across platforms including Jeep, Ford Powerstroke, and Dodge Cummins, while maintaining a focus on American craftsmanship, reliability, and practical design.
Video
DIESEL TALK | BIG 7 BATTERY CABLES!
Are dim lights, slow cranking, or voltage drop holding your truck back? A Big 7 Battery Cable Kit is one of the best upgrades you can make to improve your truck's electrical system and overall reliability.
Built with 100% fine-strand oxygen-free copper wire, heavy-duty terminals, and marine-grade heat shrink, Big 7 Battery Cables are designed to deliver maximum conductivity while standing up to harsh conditions. Replacing old, corroded factory cables can improve starting performance, charging efficiency, and provide the power needed for aftermarket accessories like lighting, winches, audio systems, and more.
Whether you're replacing worn-out factory cables or building a truck with higher electrical demands, a Big 7 Battery Cable Kit is a simple upgrade that helps keep your electrical system performing at its best.
"Well the cables look great. The battery to battery cable was about 10 inches to short so I had to turn the drivers side battery 180 so I could use it. So then I had to extend other cables due to the battery change. Also had to change a couple battery clamps to a different style because the ones they sent didn’t work with some of the routing"