part number Quality: This radiator cap is manufactured by for Smart, for ensure that it meets the exact specifications required for optimal performance in your vehicle. Easy Installation: Designed for straightforward installation, this cap requires no drilling or modifications, allowing you to replace your old cap quickly and efficiently. Construction: Made with high-quality materials, this coolant expansion tank cap is built to withstand the rigors of engine heat and pressure, for ensure a reliable seal for your cooling system. Perfect Fit: Specifically designed for Smart 451, 450, for FORTWO, and for 452 for Roadster models, this part guarantees compatibility and proper function within your vehicle's cooling system. Enhanced Performance: By maintaining the appropriate pressure in the cooling system, this radiator cap helps prevent overheating and contributes to the overall efficiency and longevity of your engine. Part Name:Radiator Cap High Universality Fitment:NO part Number:A4505010015 Colour:black Material:ABS Package Contents: 1 * Radiator Cap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.