RD3067: 1973-1987 Chevrolet Truck Firewall Insulator - No HolesClean up your cab, reduce heat and noise, and upgrade the interior finish on your 19731987 Chevrolet C K truck. Features and Benefits Accurate fit designed for 19731987 Chevrolet C K truck applications Heat reduction layer helps limit heat transfer from the engine bay into the cab Noise dampening design reduces engine noise and vibration for improved cabin comfort Durable ABS construction molded from black ABS for long lasting performance Upgraded