The Graf PA432A Water Pump with O-Ring is a high-quality engine water pump designed for various BMW models including the E36, E39, and E46. Made of durable aluminum, this belt-driven water pump comes with an O-Ring included for added convenience. With interchange part numbers 11517509985 and 11 51 7 509 985, this pump is a reliable replacement that ensures optimal engine cooling performance. Manufactured by Graf, a trusted brand in automotive parts, the PA432A water pump is a dependable choice for BMW owners looking to maintain the efficiency of their vehicle's cooling system.