Split Grommet Seal - Solid

The Split Grommet Seal – Solid is a professional-grade firewall penetration seal designed for automotive wiring and cable routing in engine compartments and interior bulkheads. As a mechanic performing custom electrical installations, engine bay modifications, or OEM harness restoration, you'll appreciate how this split design allows easy threading of existing wires without complete harness removal. Whether you're installing auxiliary lighting, upgrading to a modern engine management system, or sealing factory penetrations on a restoration project, this grommet maintains environmental integrity while accommodating multiple conductor sizes in a single opening.

Constructed from a durable aluminum and rubber composite, the Split Grommet Seal – Solid features a 3-inch outer diameter with 0.175-inch thickness, engineered to fit standard OEM firewall holes while providing compression-sealed contact around wire bundles. The flat mounting profile ensures flush seating against vertical or horizontal surfaces, and the split design means you can open and close it around existing harnesses without disturbing connections or routing. Black finish resists UV degradation and blends seamlessly with modern engine compartment aesthetics, while the solid rubber-aluminum bond prevents separation during thermal cycling or vibration exposure—critical for longevity in high-vibration environments.

Professional installers and DIY builders frequently specify SEALS-IT grommet seals for custom automotive electrical work, utility vehicle modifications, and motorsports harness installations where preventing water, dust, and exhaust contamination is non-negotiable. The split construction makes it ideal for retrofit applications where full harness removal isn't practical, and its compact weight (0.06 lbs per unit) means bulk inventory fits easily in any tech storage. Compatible with firewall thicknesses and penetration styles found across domestic and import platforms, this grommet delivers OEM-equivalent sealing without the complexity of complete panel removal or harness rerouting.