A Core deposit is a form of deposit you pay until returning your old part. If you don't have the core at the time of purchase, you must pay the core charge. That charge is refunded to you when you return the core.
LuK: New flywheels are a smart alternative! The flywheel is an integral part of clutch replacement. It must provide a smooth, flat surface for proper clutch operation. Pairing your clutch set with a new LuK flywheel is a smart, cost-effective alternative to resurfacing. All new - never remanufactured every component is engineered and manufactured to OE specifications, including ring gear and dowel pins.