Bulkhead Fitting 2 Wire Thru-Wire

The Bulkhead Fitting 2 Wire Thru-Wire (Model EL-AC-166) is a precision firewall grommet engineered for applications requiring secure, sealed wire passage through structural barriers. Designed and manufactured by ATL Fuel Cells, this component serves critical roles in aerospace, automotive, and tactical vehicle systems where wire management and environmental sealing are non-negotiable. Whether integrating auxiliary power systems, communication networks, or sensor arrays into armored platforms or expedition vehicles, this thru-wire fitting provides the structural integrity and protection professional operators demand.

This bulkhead fitting accommodates two wires through a single firewall penetration, featuring a 0.375-inch inner diameter (ID) bore and 1-inch outer diameter (OD) with a 1.45-inch thickness profile. Constructed from durable black plastic, the design isolates wires from direct contact with sharp metallic edges while maintaining a weathertight seal against moisture, vibration, and contamination—critical for field durability in harsh environments. The compact footprint (2.5 x 1 x 2.5 inches) minimizes installation space while the lightweight construction (0.03 lbs) ensures zero impact on vehicle weight or balance, making it ideal for weight-conscious tactical and expedition builds.

Military and law enforcement personnel integrating auxiliary systems into vehicles, command posts, or mobile platforms benefit from the reliability and longevity this grommet provides. Installation is straightforward: the fitting seats securely through standard firewall holes, and the two-wire capacity accommodates power and signal lines simultaneously—typical for fuel cell systems, auxiliary battery banks, or integrated communication harnesses. Compatibility spans custom vehicle builds, trailer wiring systems, and any application requiring sealed wire passage with professional-grade reliability. When firewall penetration integrity cannot be compromised, this thru-wire fitting delivers proven performance.