Blue Sea 4005 Standard CableCap – Red/Black

The Blue Sea 4005 Standard CableCap – Small Pair is a compact battery terminal insulator designed to protect battery posts and adapter terminals in marine and automotive electrical systems. Manufactured by Blue Sea Systems for cable sizes 4, 2 and 1 pair, this red/black pair helps prevent accidental shorts and corrosion while making polarity identification simple and reliable.

Key Features

• Cable Size Compatibility: Fits cable sizes 4, 2 and 1 pair for common battery installations.
• Pair Included: Red and black caps for quick positive/negative identification.
• Terminal Protection: Insulates battery terminals and terminals with added adapter posts to reduce short and corrosion risk.
• Compact Packaged Size: Packaged dimensions approximately 7 x 5 x 4 in; packaged weight ~0.2 lb.

Blue Sea Systems’ 4005 CableCaps are ideal for boat batteries, battery switches, busbars and other marine electrical components where secure insulation and clear polarity marking are important. The small pair is easy to install and maintain, keeping connections tidy and reducing the chance of accidental contact during routine checks. Installers and boat owners choose Blue Sea for dependable electrical accessories that integrate well with common marine hardware.

Model: 4005 (UPC: 632085040055). Compatible with common marine adapter terminals and battery posts; verify fit for oversized or custom terminals. For full system protection, pair these CableCaps with Blue Sea terminal blocks, busbars and battery switches as appropriate.