Blue Sea 4010 CableCap - Red 0.70 to 0.30 Stud

The Blue Sea 4010 CableCap in red is an essential marine electrical connection solution for recreational boaters and working vessels alike. After years running inboard and outboard engines, you know that battery terminal corrosion and accidental short circuits are silent killers that can strand you miles from shore or damage expensive electronics. This compact stud cap isolates battery terminals and prevents unwanted contact with conductive elements, securing the electrical backbone of your vessel whether you're running a weekend fishing charter or maintaining a commercial workboat.

Engineered by Blue Sea Systems—the trusted standard in marine electrical safety—the 4010 CableCap accommodates studs ranging from 0.30 to 0.70 inches, making it versatile across battery bank configurations and electrical architectures. The bright red color serves a critical safety function: it immediately identifies positive terminals under deck lighting or daylight, reducing the risk of reverse polarity during maintenance or emergency battery disconnect procedures. The durable polymer construction resists saltwater corrosion, UV degradation, and the thermal cycling that occurs in engine rooms, ensuring reliable performance through seasons of demanding marine service.

This CableCap is ideal for dual-battery setups, auxiliary power systems, and any installation where terminal protection prevents accidental grounds or crew contact with live studs. Whether you're upgrading an aging battery bank, installing new systems, or ensuring safety on your vessel, the Blue Sea 4010 CableCap provides peace of mind and reliable performance in challenging marine environments.