This MAHLE thermostat, part code TI 6 87, is designed to precisely control the flow of coolant within your vehicle's engine. By opening and closing at specific temperatures, it maintains the engine within its ideal operating range, crucial for fuel efficiency and longevity. Proper functioning of the thermostat prevents both overheating and undercooling, both of which can lead to significant engine damage and reduced performance. MAHLE is a trusted name in engine components, known for quality and reliability. This component is vital for the cooling system's overall health. Replacing a faulty thermostat with a quality part like this MAHLE unit can restore optimal engine temperature regulation and prevent costly repairs down the line.