New aluminum radiator for Opel GT's equipped with an automatic transmission. Recommended for Summer driving and for performance-built Opel GTs. Installs in original location, and outperforms original-style radiators. Works with original mounts, and adds a convenient drain plug! (Note: Designed for automatic transmission Opel GT's - Manual transmission GT owners see our part #11023A). Requires a 70% coolant/distilled water mix for operation.