Firewall Grommet -20an

The Firewall Grommet -20an from SEALS-IT is a precision engineered cable and hose routing component designed to safely pass lines through vehicle firewalls, engine compartments, and structural panels without chafing or electrical shorts. Available for sale, this grommet serves technicians, fabricators, and automotive enthusiasts who need reliable firewall penetration solutions for custom wiring harnesses, fuel lines, coolant hoses, and hydraulic systems. By isolating conductors and rubber lines from metal edges and heat sources, the firewall grommet prevents premature wear and potential system failures in high-vibration environments.

This firewall grommet features a 3-inch outer diameter with a 1.25-inch inner diameter opening, offering versatile accommodation for single or bundled line routing. The dual-material construction combines aluminum and natural rubber to provide structural rigidity while dampening vibration and protecting against abrasion. At 0.12 inches thick, the grommet achieves an optimal balance between durability and compact installation depth, making it ideal for tight engine bay configurations. The black exterior finish resists UV degradation and heat exposure, while the natural rubber interior cushions lines and isolates them from conductive surfaces, reducing electromagnetic interference and extending component lifespan.

Professional installers and custom fabricators benefit most from this firewall grommet when routing -20AN braided hoses and associated fuel, coolant, or brake system lines through engine firewalls in race cars, restorations, and modern performance builds. The 3-inch OD seats flush against standard firewall thicknesses, and the single-hole design simplifies installation without requiring welding or permanent modification. Its aluminum-rubber composite resists fuel, oil, and coolant exposure, making it compatible with EFI systems, turbo intercoolers, and remote transmission coolers. For specifications, compatibility questions, or bulk orders, consult your SEALS-IT distributor for proper grommet selection based on your exact hose diameter and firewall material.