The product is a vintage Mercedes-Benz camshaft key with the OE/OEM part number 621-997-01-67, manufactured in Germany. It is specifically designed for valve timing, serving as a crucial component in the engine's valvetrain system. The camshaft key is not designated as a performance part, making it a reliable and essential piece for maintaining the proper functioning of the engine in classic Mercedes-Benz vehicles.THIS KEY WAY WILL FIT MANY MODEL GAS AND DIESEL ON CHASSIS TYPES 108/109/110/111/112/113/114/115. PLEASE CHECK FOR FITMENT FOR YOUR MODEL .