Maintain the precise timing of your engine with this comprehensive kit from BOSCH, part number 1 987 946 391. This set contains both a water pump and a timing belt, critical elements that work together to regulate your engine's valve operation and coolant circulation. Replacing these components at recommended intervals is crucial for preventing catastrophic engine failure. The timing belt synchronizes the rotation of the crankshaft and camshaft(s), while the water pump ensures your engine stays within its optimal operating temperature. This BOSCH kit provides a reliable solution for these vital maintenance tasks. Crafted with BOSCH's commitment to quality, this kit is designed to meet or exceed original equipment specifications. Trust in BOSCH for durable and dependable parts that contribute to the longevity and efficiency of your vehicle's engine.