NEW Main firewall grommet used for heater cables.2 required per car for 1957.1 required for speedometer for 1956.Fits all models. Bel Air 150 210. One piece56 57 Chevy Firewall Grommet Bel Air 210 150 1956 1957 ChevroletSKU: 67O-FG1$5.99PriceQuantity*Add to Cart