UAC AK 1916 A/C System Repair Kit For 08-10 BMW M5 M6 by UAC. UAC AK 1916 A/C System Repair Kit For 08-10 BMW M5 M6 by UAC Ð a trusted leader in automotive air conditioning components. Designed for superior performance and durability, this part ensures optimal cooling efficiency. Perfect for restoring your vehicleÕs A/C system with OEM-quality reliability.