The SM 92 Firewall Grommet by Metro Moulded Parts is precision-designed to fit into a 1-3/8" hole, seamlessly integrating with your 1956 to 1962 Chevrolet Corvette. Synonymous with terms like firewall seal, rubber grommet, and hole cover, this essential accessory maintains the sleek style of classic Corvettes while providing exceptional performance. With its robust, chemical-resistant finish and compliance with OEM #3708181, this grommet stands strong against harmful elements like sunlight and ozone, offering an unbeatable lifespan. Crafted using state-of-the-art rubber compounds, the SM 92 features smooth edges and flexible material that ensure an easy, hassle-free installation, fitting snugly into place to offer a long-lasting, protective seal. This pliability not only eases the installation process but guarantees a secure fit that blocks debris and moisture, preserving your vehicle's integrity. Built for style and high functionality, this durable grommet redefines quality rubber components. Backed by Metro's platinum 30-year "No Hassle" Warranty, you'll experience trust and reliability that stands the test of time. Equip your Corvette with this premium grommet today, bringing optimal performance and style to your cherished classic.